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Print No. 84415679 1 st edition English 02/11 from serial no: FNH03550NBHC05001 Operator’s Manual 3550 Crawler Dozer

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Page 1: Crawler Dozer - HireWays

Craw

ler Dozer

3550

Print No. 844156791st edition

English 02/11

from serial no: FNH03550NBHC05001

Operator’s Manual

3550Crawler Dozer

Page 2: Crawler Dozer - HireWays

The safety plates applied to this machine are colour coded yellow with black edges and wording for thepoints to which ATTENTION must be paid and red coloured with white edges and wording for DANGER points.

This alert symbol signals important messages involving your safety. It means: WARNING! BE ALERT! ITINVOLVES YOUR SAFETY.

Operator's Manual

Print No. 84415679 (II - 2011)

WARNING

STUDY THIS MANUAL BEFORE STARTING, OPERATING, MAINTAINING, FUELLING OR SERVICINGTHE MACHINE.

Read and heed carefully all safety instructions identified by the key words WARNING and DANGER.

Crawler dozer

3550

Page 3: Crawler Dozer - HireWays

WARNING

STUDY CAREFULLY THIS MANUAL BEFORE STARTING, OPERATING, MAINTAINING, FUELLING ORSERVICING THE MACHINE.

IMPORTANT NOTICES

This machine has been designed and manufactured for digging and moving loose materials only. Anyother application shall be considered contrary to the use intended by the Factory who, consequently,shall not be considered responsible for any damage to property or the machine itself, nor for personalinjuries which could eventually occur. Also, it must be considered that by taking the risk for an improperuse, you become responsible of the consequences.This machine must be operated, serviced or repaired exclusively by personnel previously trained onthe equipment at work and the relevant safety rules, besides being authorised to operate the machineitself.The User is always obliged to observe the general rules for safety and the prevention of injuries, aswell as the rules for on-the-road travelling.Any arbitrary modification implemented on this machine makes void any responsibility of the Factoryderiving from damages or injuries.Neither the Factory nor any Organisations in its Distribution Network, including but not limited tonational, regional or local distributors, are responsible for any liability arising from any damage resultingfrom defects caused by parts and/or components not approved by the Factory for use in maintainingand/or repairing products manufactured or merchandised by the Factory.In any case, no warranty of any kind is made or shall be imposed with respect to products manufacturedor merchandised by the Factory, when failures are caused by the use of parts and/or components notapproved by the Factory.

SERIAL NUMBER

TYPE OF ENGINE

ENGINE SERIAL NUMBER

Page 4: Crawler Dozer - HireWays

TABLE OF CONTENTS

SUBJECT PAGE

SAFETY RULES ......................................................................................................................................... I-VIIForeword ...................................................................................................................................................... VIIIIdentification data ............................................................................................................................................ 2Quantitative sides of comfort ........................................................................................................................... 3

GENERAL SPECIFICATIONS ........................................................................................................................ 4Main dimensions ............................................................................................................................................. 7Stability ............................................................................................................................................................ 8List and location of safety decals .................................................................................................................... 9Preliminary instructions and break-in period .................................................................................................. 18

OPERATION RULES .................................................................................................................................... 19Controls and instruments .............................................................................................................................. 21

OPERATING INSTRUCTIONS ..................................................................................................................... 34General information ....................................................................................................................................... 34Prior to starting (daily) ................................................................................................................................... 34Engine starting .............................................................................................................................................. 34Stopping the machine .................................................................................................................................... 36Stopping the engine ...................................................................................................................................... 37Operator's seat adjustment ........................................................................................................................... 37Fuel reservoir ................................................................................................................................................ 38Blade adjustment ........................................................................................................................................... 38Removal of cab ............................................................................................................................................. 39Reinstallation of cab ...................................................................................................................................... 40Brakes disengagement .................................................................................................................................. 41Towing the mechine ...................................................................................................................................... 43Moving the machine with outside means ....................................................................................................... 44Instructions for lowering the equipment to the ground with engine inoperative ............................................. 45Transporting the machine .............................................................................................................................. 45Long storage of the machine ......................................................................................................................... 46Cold climate precautions ............................................................................................................................... 46Starting the machine at low temperatures ..................................................................................................... 47Starting the machine with booster batteries .................................................................................................. 47

MACHINE OPERATION ............................................................................................................................... 48

CAB ............................................................................................................................................................... 57

MAINTENANCE ............................................................................................................................................ 61Maintenance operations ................................................................................................................................ 62Walk around inspection (to be performed daily) ............................................................................................ 62List of on-board tools ..................................................................................................................................... 63List of programmed maintenance .................................................................................................................. 64Every 10 hors work ....................................................................................................................................... 65Every 50 hours work...................................................................................................................................... 66Every 250 hours work .................................................................................................................................... 68Every 500 hours work .................................................................................................................................... 71Every 1000 hours work .................................................................................................................................. 73Every 2000 hours work .................................................................................................................................. 79When Required ............................................................................................................................................. 80Operations to be performed, when required .................................................................................................. 81

ELECTRICAL SYSTEM ................................................................................................................................ 82Electrical diagram of protection tree .............................................................................................................. 83

TABLE OF FLUID CAPACITIES ................................................................................................................... 84

Page 5: Crawler Dozer - HireWays
Page 6: Crawler Dozer - HireWays

I

SAFETY RULES

GENERALITIES

Study carefully this Manual before starting, operating,maintaining, fuelling or servicing the machine.

Read and heed all safety rules before any intervention.

Do not allow unauthorised personnel to operate service ormaintain this machine.

Do not operate the machine if not feeling in good healthconditions.

Do not wear rings, wrist watches, jewellery, loose orhanging apparels, such as ties, torn clothing, scarves,unbuttoned or unzipped jackets that can catch on movingparts. Wear proper safety equipment as recommended forthe job. Examples: hard hat, heavy gloves, ear protection,safety glasses or goggles, reflector vests, respirator.Consult your employer for specific safety equipmentrequirements.

Keep operator's compartment, stepping points, grab-railsand handles clear of foreign objects, oil, grease, mud orsnow accumulation to minimise the danger of slipping orstumbling. Clean mud or grease from shoes beforeattempting to mount or operate the machine.

Do not jump on or off the machine. Keep two hands andone foot, or two feet and one hand in contact with step grabrails and handles at all times.

Do not use controls or hoses as hand holds when climbingon or off machine. Hoses and controls are movable and donot provide a solid support. Also, controls may beinadvertently moved causing accidental machine orequipment movement.

Never attempt to operate the machine or its tools from anyposition other than seated in the operator's seat.

Keep head, body, limbs, hands and feet inside operator'scompartment at all times, to reduce exposure to hazardsoutside the operator's compartment.

Be careful of slippery conditions on stepping points, handrails, and on the ground. Wear safety boots or shoes thathave a high slip resistant sole material.

Do not leave the machine until it is completely stopped.

Check the seat safety belt at least twice a year. If there aresigns of wear or fraying or other signs of weakness thatcould lead to failure, replace it.

STARTING

NEVER START NOR OPERATE AN UNSAFEMACHINE. Before operating a machine, always ensurethat any unsafe condition has been satisfactorilyremedied.

Check brakes, steering and attachment controls beforemoving. Advise the proper maintenance authority of anymalfunctioning part or system.

Be sure all protective guards or panels are in place, and allsafety devices provided are in place and in good operatingconditions.

Be sure exposed personnel in the area of operation areclear of the machine before moving it or its attachments.WALK COMPLETELY AROUND the machine beforemounting. Sound horn.

Before starting machine, check, adjust and lock theoperator's seat for maximum comfort and control of themachine.

Fasten your seat belt (when provided).

Obey all flag signals and signs.

Due to the presence on the machine of flammable fluids,never check or fill fuel reservoirs or batteries near openflames, smoking materials or sparks.

REMEMBER THAT STARTING FLUID IS FLAMMABLE.Follow strictly the recommendations printed on containersand in the Operation and Maintenance Manual.

DO NOT PUNCTURE OR BURN CONTAINERS.

Containers must be stored in fresh, well ventilated places,out of reach of unauthorised persons. Follow strictly theinstructions provided by the Manufacturer.

Never use these products near open flames, smokingmaterials or sparks

OPERATION

Do not run the engine of this machine in closed areaswithout proper ventilation to remove deadly exhaustgases.

Roll Over Protective Structures are required on loaders,dozers, graders, excavators. NEVER OPERATEmachines without ROPS.

Make sure the Operator's compartment is free of foreignobjects, especially if not firmly secured. Never use themachine to transport objects, unless proper securingpoints are provided.

Check monitoring instruments at start-up and frequentlyduring operations. in case the brake pressure gaugeshows a pressure lower than the minimum operatingpressure, stop immediately the machine.

DO NOT CARRY RIDERS ON MACHINE.

Study and familiarise with escape routes alternate tonormal exit routes.

Seat belts are required by current regulations to beprovided with Roll Over Protection Structures or cabs.Keep safety belts fastened around you during operation.

For your personal protection, do not climb on or offmachine while machine is in motion.

Make sure that exposed persons in the area of operationare clear of the machine, before starting the engine andoperating the equipment. Sound horn. Obey all indicationsprovided by flags and signals.

NEVER COAST the machine down grades and slopes withthe transmission in neutral or neutralised.

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II

SAFETY RULES

Choose and shift into the most appropriate gear to keepthe speed required, thus preventing any loss of control.

Do not operate machinery in a condition of extreme fatigueor illness. Be especially careful towards the end of workingshift.

Do not operate machine with brakes out of adjustment.

Operate the machine at speeds slow enough to ensurecomplete control at all times.

Travel slowly over rough terrain, on slopes or near drop-offs, in congested areas or on ice or slippery surfaces.

When backing, always look to where the machine is to bemoved. Be alert to the position of exposed personnel. DONOT OPERATE if exposed personnel enter the immediatework area. STOP THE MACHINE.

Maintain a safe distance from other machines. Providesufficient clearance for ground and visibility conditions.Yield right-of-way to loaded machines.

Maintain clear vision of areas of travel or work. Keep cabwindows clean and repaired.

When machines are operating in tandem, the pusher(rear) must be equipped with the appropriate deflectors toprotect the unit in front from the air stream coming from theradiator.

When pulling or towing through a cable or chain, do notstart suddenly at full throttle; take-up slack carefully.

Inspect carefully for flaws or troubles before using.

Avoid kinking chains or cables. Do not pull through akinked chain or cable to the high stresses and possibilityof failure of the kinked area. Always wear heavy gloveswhen handling chains or cables.

Be sure chains and cables are anchored and the anchorpoints are strong enough to handle the expected load.Keep exposed personnel clear of anchor points and cablesor chains.

DO NOT PULL UNLESS OPERATOR's COMPARTMENTOF MACHINES INVOLVED ARE PROPERLY GUARDEDAGAINST POTENTIAL CABLE OR CHAIN BACKLASH.

Be alert to soft ground conditions close to newlyconstructed walls. The fill material and weight of themachine may cause the wall collapse under the machine.

In darkness, check area of operation carefully beforemoving in with machine. Use all lights provided. Do notmove into area of restricted visibility.

If engine has a tendency to stall for any reason under loador idle, report this for adjustment to proper maintenanceauthority immediately. Do not continue to operatemachine, until condition has been corrected.

On machines supplied with suction radiator fans, be sureto periodically check engine exhaust parts for leaks, asexhaust fumes are dangerous to the operator.

In case of closed type cabs, always keep an opening withthe outside, to ensure a constant air circulation.

Operators must know thoroughly the performances of themachine they are operating. When working on slopes ornear sudden level drops of the terrain, avoid areas whereground is loose or soft since rolling-over or loss of controlof machine could result.

Where noise exposure exceeds 90 dBA for 8 hours, wearapproved ear protection.

When counterweights are provided, do not work machineif they have been removed.

Overtaking manoeuvres must be performed only whenabsolutely necessary and unavoidable. Beware ofpossible uneven terrains, poor visibility conditions, thepresence of other machinery or persons out of sight.

Operate the machine at a speed adequate to the workingconditions in the site and slow enough to ensure completecontrol at all times.

Never use the machine as a work platform or scaffolding,nor other inappropriate operations (i.e. pushing railwaycars, trucks or other machines).

Be alert of people in the operating area of the machine.

When operating a machine, know in advance whatclearances will be encountered, overhead doors, cables,pipes, bearing load limitations of ground, bridges, floors orramps.

When roading, find-out what conditions are likely to beencountered, clearances, traffic congestion, type of roadsurfacing, etc. Beware of fog, smoke or dust elements thatobscure visibility.

When crossing gullies or ditches, move at an angle withreduced speed after ensuring ground conditions willpermit a safe traverse.

Explore the working area to identify potential risks such as:slopes, overhangs, pits, demolition rubble, fires, ravines,ditches, soft terrain, heavy traffic, crowded parking areas,closed ambients. In such conditions, proceed withextreme care.

Whenever possible, avoid going over obstacles such asrough terrain, rocks, logs highly irregular ground, steps,ditches, railroad tracks. When obstructions must becrossed, do so with extreme care at an angle, if possible.Reduce speed, shift-down. Ease up to the break overpoint, pass the balance point slowly on the obstruction andease down on the other side.

In steep down-hill operation, do not allow engine to over-speed. Select proper gear before starting down grade.

Avoid side hill travel, whenever possible. Drive up anddown the slope. Should the machine slipping sideways,turn it immediately downhill.

The grade of slope you should attempt will be limited byfactors such as condition of the ground, load being han-dled, type of machine, speed of machine and visibility.

There is no substitute for good judgement when workingon slopes.

Page 8: Crawler Dozer - HireWays

III

SAFETY RULES

Avoid operating equipment too close to an overhang orhigh wall, either above or below the machine. Be on thelook-out for caving edges, falling objects and slides.Beware of concealment by brush and undergrowth ofthese danger.

When pushing-over trees, the machine must be equippedwith proper overhead guarding. Never allow a machine toclimb up on the root structure particularly while the tree isbeing felled. Use extreme care when pushing over any treewith dead branches.

When pushing trees with dead limbs, proceed with ex-treme care. Avoid brush piles, logs or rocks.

NEVER DRIVE OVER THEM or other surface irregulari-ties that brake traction with the ground, especially when onslopes or near drop-offs.

Be alert to avoid changes in traction conditions that couldcause loss of control. DO NOT DRIVE on ice or frozenground conditions when working the machine on steepslopes or near drop-offs.

Working in virgin and rough terrains is characterised by thepresence of all the perils and risks listed above. In theseconditions, it is emphasised the danger represented bylarge tree limbs (possibly falling on the machine), largeroots (acting as a leverage under the machine when up-rooted causing the roll-over of the unit) etc...

STOPPING

When the machine is stopped for whatever reason, followthe instructions of chapters "Stopping the machine" and"Stopping the engine" of the Operation and MaintenanceInstruction Manual.

Always remember to position the transmission drivecontrol in neutral and engage the control lock to secure themachine.

The parking brake is automatically set.

NEVER LEAVE THE MACHINE UNATTENDED with theengine running.

Always, before leaving the operator's seat and aftermaking sure all people are clear of the machine, slowlylower the attachments or tools flat to the ground in apositive ground support position.

Return the controls to rest position. Place the gearshiftlever in neutral. Disconnect the master switch and extractthe key.

See the relevant chapter in this Manual.

Park in a non- operating and no-traffic area or asinstructed. Park on firm level ground if possible. Where notpossible, position machine at a right angle to the slope,making sure there is no danger of uncontrolled slidingmovements.

If parking in traffic lanes cannot be avoided, provideappropriate flags, barriers, flares and signals as required.

Also provide advance warning signals in the traffic lane ofapproaching traffic.

Keep head, body, limbs, feet, fingers or hands away frombucket, blade or ripper when in raised position.

Always disconnect the master switch before anyintervention (i.e. cleaning, repairing, maintaining,refuelling etc.). Do the same when parking for prolongedperiods of time to avoid accidental or unauthorisedstarting.

Never lower attachments or tools other than seated inoperator's seat. Sound horn. Make sure area near theattachment is clear. Lower the attachment slowly. DONOT USE FLOAT POSITION of hydraulic system.

Place master switch in OFF, securely block the machineand lock it every time you leave it unattended. Return keysto authorised security. Heed all shut-down operations ofthe Operation and Maintenance Instruction Manual arefollowed.

MAINTENANCE

GENERALITIES

Before operating or performing any intervention on themachine:

- read carefully all the rules contained by this Manual,

- read and obey all safety related plates and instructionslocated on the machine.

Do not allow unauthorised personnel to perform anymaintenance operation. Do not perform maintenanceoperation without prior authorisation. Follow allrecommended maintenance and service procedures.

Keep operator's compartment free of all loose objects thatare not properly secured.

Do not wear rings, wrist watches, jewellery, loose orhanging apparels, such as ties, torn clothing, scarves,unbuttoned or unzipped jackets that can catch on movingparts. Wear proper safety equipment as recommended forthe job. Examples: hard hat, heavy gloves, ear protection,safety glasses or goggles, reflector vests, respirator.Consult your employer for specific safety equipmentrequirements.

Do not use controls or hoses as hand holds when climbingon or off machine. Hoses and controls are movable and donot provide a solid support. Also, controls may beinadvertently moved causing accidental machine orequipment movement.

Do not jump on or off the machine. Keep two hands andone foot, or two feet and one hand in contact with step grabrails and handles at all times.

Do not perform any service operation on the machine witha person seated in the operator's compartment, unless heis an authorised operator co-operating in the operation tobe performed.

Page 9: Crawler Dozer - HireWays

IV

SAFETY RULES

Keep operator's compartment, stepping points, grab-railsand handles clear of foreign objects, oil, grease, mud orsnow accumulation to minimise the danger of slipping orstumbling. Clean mud or grease from shoes beforeattempting to mount or operate the machine.

Keep shoes free of mud or grease before climbing ordriving the machine.

Never attempt to operate the machine or its tools from anyposition other than seated in the operator's seat.

When maintenance operations require movinghydraulically operated attachments by means ofmachine's hydraulic system remember that allmanoeuvres must be made only when seated in theoperator's seat. Before starting machine or movingattachment or tools, set brakes , sound horn and call for anall clear. Raise attachment slowly.

Always block booms or parts of the machine which mustbe raised to perform interventions under them withexternal devices. Do not allow persons to move into thevicinities nor standing under equipment not being blocked.Unless you are totally sure about your safety, avoid stayingunder raised equipment, even in case it is blocked.

Do not place the body, limbs or fingers into sharparticulation uncontrolled openings of the machine andwithout proper protections, unless they are blocked in asafe manner.

Never perform interventions with engine running, exceptas called for in a Manual. Do not wear loose clothing orjewellery near moving parts.

When servicing or maintenance require access to areasthat cannot be reached from the ground, use a ladder orstep platform that meet local and national regulations, toreach the service point. If such ladder or platform are notavailable, use the machine hand holds and steps asprovided. Perform all service or maintenance carefully.

Shop and/or field service platforms or ladders must beconstructed and maintained in accordance with local andnational regulations.

Disconnect batteries and tag all controls according tocurrent regulations to warn that work is in progress. Blockmachine and all attachments that must be raisedaccording to current regulations.

Due to the presence of flammable fluids, never check or fillfuel tanks, batteries, nor use starting fluid near lightedsmoking materials or open flames.

BRAKES ARE INOPERATIVE when manually releasedfor servicing. Provisions must be made to maintain controlof the machine by blocking or other means.

The fuel filling nose must be kept constantly inside thefilling neck. Keep this contact from the beginning to the endof the fuelling operation to avoid the possibility that sparksdue to static electricity are generated.

Use only designated towing or attaching points. Use carein making attachments. Make sure pins and/or locks aresecure before pulling. Stay clear of drawbars, cables orchains under load.

To move a disabled machine, use a trailer or a low-boy, ifavailable. In case towing is needed , use all necessarysignals required by local and national regulations, andfollow the directions provided in this Manual.

To load/unload a machine from transporter, choose a levelsurface ensuring firm support to the wheels of truck ortrailer. Use strong access ramps, with adequate heightand angle. Keep surface free of mud, oil or slipperymaterials.

Anchor the machine securely to the bed of truck or trailerand block wheels or tracks with appropriate wedges.

Never align holes with fingers or hands; always useappropriate aligning tools.

Eliminate all sharp edges and burrs from re-worked parts.

Use only approved grounded auxiliary power sources forheaters, chargers, pumps and similar equipment toreduce the hazards of electrical shocks.

Lift and handle heavy parts with a lifting device of propercapacity. Be sure parts are supported by proper slings andhooks. Use lifting eyes if provided. Watch-out for people inthe vicinity.

Never pour gasoline or diesel fuel into open, wide and lowcontainers. Never use gasoline, solvent or otherflammable fluid to clean parts. Use exclusively qualified,non-flammable, non-toxic commercial solvents.

When using compressed air for cleaning parts, use safetyglasses with side shields or goggles. Limit pressure to 2bar, in accordance with local and national regulations.

Do not run the engine in closed areas without properventilation to remove deadly exhaust fumes.

Do not smoke or permit any open flames or spark nearwhen re-fuelling or handling flammable materials.

Do not use an open flame as a light source to look for leaksor for inspection anywhere on the machine.

Make sure that all mechanic's tools are in good conditions.NEVER USE tools with mushroomed heads or frayed.Always wear eye protections.

Move with extreme care when working under the machine,its attachments and or on or near them. Always wearprotective safety equipment as required, such as hard hat,goggles, safety shoes, ear plugs.

When performing operations requiring running of theengine, have a qualified operator in the operator's seat atall times with the mechanic on sight. Place thetransmission in neutral and set the brakes and safety lock.

KEEP HANDS AND CLOTHING AWAY FROM MOVINGPARTS.

For field service, move machine to level ground, ifpossible, and block it. If work on an incline is absolutelynecessary, first block machine and its attachmentssecurely, than move it to level ground as soon as possible.

Do not trust worn and /or kinked chains and cables: do notuse them for lifting or pulling operations. To handle them,always use heavy gloves.

Page 10: Crawler Dozer - HireWays

V

SAFETY RULES

Be sure chains and cables are anchored and the anchorpoints are strong enough to handle the expected load.Keep exposed personnel clear of anchor points and cablesor chains.

No bystanders are allowed near the hooking points, chainsor cables.

DO NOT PULL UNLESS OPERATOR'S COMPART-MENT OF MACHINES INVOLVED ARE PROPERLYGUARDED AGAINST POTENTIAL CABLE OR CHAINBACKLASH.

Keep the area where maintenance operations areperformed CLEAN and DRY. Eliminate immediately allwater and oil spillages.

Do not pile oily or greasy rags; they represent a fire hazard.Store in closed metal container.

Before starting machine, check, adjust and lock theoperator's seat for maximum comfort and control of themachine. Be sure exposed personnel in the area ofoperation are clear of the machine before moving it or itsattachments. Sound horn.

Rust inhibitors are volatile and flammable Use only in wellventilated areas. Keep open flames away - DO NOTSMOKE - Store containers in a cool well ventilated place,secure against unauthorised personnel.

Do not carry loose objects in pockets that might fallunnoticed into open compartments.

Wear proper protective equipment such as safety gogglesor safety glasses with side shields, hard hat, safety shoes,heavy gloves when metal or other particles are apt to fly orfall.

Wear welders protective equipment such as dark safetyglasses, helmets, protective clothing, gloves and safetyshoes, when welding or burning. Wear dark safety glassesnear welding zones. DO NOT LOOK AT ARC WITHOUTPROPER EYE PROTECTION.

Know your jacking equipment and its capacity. Be surethe jacking point used on the machine is appropriate forthe load to be applied. Be sure the support of the jackat the machine and under jack is appropriate andstable.

The load lifted by jacks is always dangerous: it isnecessary to transfer loads to appropriate blocking as asafety measure, before proceeding with service ormaintenance work, according to local or nationalregulations.

Steel cables are frayed after prolonged use; always wearappropriate protections (heavy gloves, goggles etc.).

Handle all parts carefully. Keep hands and fingers awayfrom structures, gears or moving parts. Use and wearalways the appropriate protections

Compressed air systems can have water depositscreated by moisture condensation due to changes ofatmospheric condit ions. If required, dischargedeposits, as instructed.

STARTING

Do not run the engine in closed areas without properventilation to remove deadly exhaust fumes.

Do not place head, body, limbs, feet, hands or fingers,near rotating fans or belts. Be especially alert near pusherfans.

STARTING FLUID IS HIGHLY FLAMMABLE. Followstrictly the recommendations printed on containers and inthe Operation and Maintenance Manual. Containers mustbe stored in fresh, well ventilated places, out of reach ofunauthorised persons. DO NOT PUNCTURE OR BURNCONTAINERS.

ENGINE

Loosen the radiator cap very slowly, to release pressurefrom the system, before removing it. All coolant level top-ups must be performed with engine OFF.

Avoid that flammable materials touch exhaust parts.Should this be possible, provide the necessaryprotections.

Do not run engine when refuelling and use care if theengine is hot due to the increased possibility of a fire if fuelis spilled.

Never attempt to check or adjust fan belts when engine isrunning.

Do not adjust engine fuel pump when machine ismoving.

Do not lubricate the machine with engine running.

Do not run the engine with air intakes, door or protectionsopen.

ELECTRICAL SYSTEM

Always disconnect batteries prior to any intervention onmachine or electrical system (cleaning, repair,maintenance).

Should booster batteries be used, remember to connectboth ends of the booster cables in the proper manner (+)with (+) and (-) with (-). Avoid short-circuits of theterminals. Follow thoroughly the instructions of thisManual.

Page 11: Crawler Dozer - HireWays

VI

SAFETY RULES

Before any intervention, make sure that the main switch isOFF.

BATTERY GAS IS HIGHLY FLAMMABLE. Leave batterybox open to improve ventilation when rechargingbatteries. Never check charge by placing metal objectsacross the posts. Keep sparks or open flames away frombatteries. Do not smoke near battery to guard against thepossibility of causing an explosion.

Before any intervention, make sure that there are no fuelor electrolyte leakages; eliminate them before proceedingwith further work. When recharging batteries in closedambients, make sure that there is appropriate ventilationto prevent possible accidental explosions due to theaccumulation of gases generated during the recharge.

HYDRAULIC SYSTEM

Fluid escaping under pressure from a very small hole canbe almost invisible and can have sufficient force topenetrate the skin. Use a piece of cardboard or wood tosearch for suspected pressure leaks. DO NOT USEHANDS. If injured by escaping fluid, see a doctor at once.Serious infection or reaction can develop if proper medicaltreatment is not administered immediately.

Stop the engine and release all pressures in the systembefore removing panels, housings, plugs or covers.

In case pressures must be measured, use instruments ofadequate capacity. Always follow the recommendedprocedures.

EQUIPMENT

Keep head, body, limbs, feet, fingers or hands away frombucket, blade or ripper when in raised position.

Prior to any intervention, install all safety devicesaccording to current rules and regulations.

In case equipment on the machine must be operated byhydraulic systems, remember to proceed only afterseating in the operator's compartment. Make sure thatthere are no persons in the operating area of the machine.Alert people before operating using the horn and by voice.Move the equipment very carefully.

Do not use machine to transport loose objects, unlessproper devices for this purpose are provided.

Clutches and brakes of this machine and eventualauxiliary equipment and attachments (such as operatingcylinder or winches control valves) must always beproperly adjusted in accordance with the instructionsprovided by the Manuals of the Manufacturer.

Never perform adjustments with engine running, exceptwhen called for by the above instructions.

When changing work shift, check that wheel or rimsecuring screws and brackets are not loosen; if necessary,retighten to the prescribed torque.

Page 12: Crawler Dozer - HireWays

VII

On machines having hydraulically, mechanically, and/or cable controlled equipment (such as shovels,loaders, dozers, excavators etc.) be certain the equipment is lowered to the ground before servicing,adjusting and/or repairing. If it is necessary to have the hydraulically, mechanically, and/or cable controlledequipment partially or fully raised to gain access to certain items, be sure the equipment is suitablysupported by means other than the hydraulic lift cylinders, cable and/or mechanical devices used forcontrolling the equipment.

WARNING

SAFETY RULES

For the decommissioning of the machine, the availabilityof particular tooling (hoists, hydraulic presses.containers for liquids etc.) is required as well asspecific tools listed in the Repair Manuals, availablefrom licensed Dealers.This has the purpose of avoiding that duringdisassembly operations, dangerous situations mayarise both for the personnel involved and theenvironment.

In the machine are present:• Fluids under pressure (hydraulic system, cooling

system etc.)• Gases (air conditioning system and accumulator, if

installed)• Mechanical devices mounted under pressure (track

tensioner etc.)• Acid (battery)• Heavy machine components (frames, blades,

buckets etc.)

DECOMMISSIONING THE MACHINE

• The decommissioning of the machine must beperformed exclusively by personnel trained,qualified and authorised to perform suchoperation.

• Start the disassembly of hydraulic componentsonly after the same, the hydraulic oil and lubricantshave fully cooled-off and after all residualpressures have been released, as described bythe Repair Instruction Manual.

• Prior to proceeding with disassembly operations,comply with the GENERAL SAFETY RULESand drain each components of the machine filledwith fluids, both in the reservoirs and the relevantsystems.

WARNING

DISPOSE OF WASTESIN AN APPROPRIATE MANNER

• The improper disposal of waste is a menace for theenvironment. Potentially dangerous wastes usedon machines include lubricants, fuel, filters andbatteries.

- Use sealed containers when draining fluids; donot use containers for food or drinks which couldbe erroneously used for drinking.

- Do not spread waste on the ground, in drainagesor water tables.

- Seek information about the appropriate mannersof re-cycling or disposing of waste from localauthorities or waste management centres, orfrom your Dealer.

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VIII

This manual is designed to serve as a guidance for correct and safe operation of the machine and its systematicservicing.The continued observance of the instructions provided herein will ensure best possible performance, operationeconomy and long life of the machine and will avoid the most common causes of accidents which may occur duringwork or maintenance operations.As regards safety in particular, read carefully the general rules given on pages I through VII.The repair procedures for this machine are described in separate service publications obtainable from theManufacturer's Organization.

Each machine is supplied with a copy of this manual. The descriptions and illustrations appearing in this manualare not binding; thus the Manufacturer reserves the right, while retaining the basic features of the model hereindescribed and illustrated, to make at any time, and without necessarily bringing this manual up-to-date, anyalteration to units, parts, accessories or their supply, deemed expedient for improvement or for any manufacturingor commercial reason. For any clarification, refer to your Dealer who will provide any information you may need.

FOREWORD

The information provided by this Manual is valid at the time of publication. Since the Manufacturer is constantlyimproving its products, some information could result not up-to date. In the event discrepancies areexperienced, consult the Sales and Service Organization.

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The safety of the operator and bystanders depends upon its judgement capacity and prudence inoperating the machine. Thus it is necessary to be knowledgeable of the position and function of allcontrols. Each machine has limitations: prior to operate it is necessary to familiarise with its capabilitiesand speed, braking, steering, stability and working features.

Crawler dozer

WARNING

The machine is shown with optional equipment.

D350M0001

3550

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Engine No. 35048946Family 1CEXLO661AAC

FR

Date of Mfg.

11/01Model

QSM11-CRef. No. S052008

Advert. Power HP/KW

Fuel rate at Advert. Power

Inj. Set IN/mm

Valve Lash Cold IN/mm

330/246

155

.025 LASH

.025 / .356

at 2100 RPM

mm 3stroke

Int.

Idle Speed RPM 650 - 1000CID/L 661/10.8Inj. Timing KVCPL 2828

.027/.686 Exh.

Cummins Engine Company, Inc.Assembled in the U.S.A.

NOx FELPM FEL

4060493

Cummins

WARNING; Injury may result and warranty is voided iffuel rate, RPM, or altitudes exceed published maximumvalues for this model and application.

IMPORTANT ENGINE INFORMATION :This engine conforms to

2001U.S. EPA and California Tier 2 and EUStage II regulations for heavy

duty nonroad compression ignition diesel cycleengines as applicable.

THIS ENGINE IS CERTIFIED TOOPERATE ON DIESEL FUEL.

Warranty Start Date

B. Machine identification plate

The identification plate contains the main data of themachine and it is visible under the operator's seat.

C. Marking and serial number of frame

The MARKING of the machine is seen on the leftside of the transmission housing.

In the lower side it is readable:- manufacturer code (the first 3 digits) FNH;- the machine code 03550N;- the serial number (last 8 digits).

IDENTIFICATION DATA

MODEL MARKING

3550 Power Steering ✩ FNH03550NBHC05001 ✩

D350M0005

A. Engine data plate

The data plate can be seen opening the left side panelof the engine compartment, containing the identificationdata and other important information on the engine.

1. Serial number of the engine(E.S.N. Engine Serial Number Cummins)

1

D350M0002

D350M0003

3550-M001

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Machine manufactured by:

CNH Italia S.p.A., Via Plava, 8010135 Torino - Italyin the LECCE Plant

Address: Zona Industriale Surbo73100 LECCE (LE)

Telephone: (0832) 6881

QUANTITATIVE SIDES OF COMFORT

Noise at the operator's seat

Evaluated on identical machines, complying with theprescriptions of standard EEC 95/27 ISO 6396

- Standard machine (with cab)L

pA = 83 dB (A)

SERVICE

For the service operations not easily performed with themeans available to the User. it is recommended that youcontact the Sales Organization or the Service Centres,which have available skilled personnel, adequate toolingand genuine spare parts. The entire Organization is atthe disposal of Customers to provide clarifications andrecommendations or to intervene with its skilled person-nel, whenever an irregular operation is experienced onyour machine.

SPARE PARTS

To ensure a perfect performance of the machine, youare reminded that parts must be replaced exclusivelywith genuine spares.To order them it is necessary to specify:- type and serial number of the machine (plate B) (pag. 2);- type and serial number of the engine (plate C);- the part number of the part being ordered.

This machine complies with the EEC Directivesrelative to safety of machines (Directives 89/392,91/368, 93/44 and 93/68)

Noise outside the machine

Evaluated on identical machines, complying withthe prescriptions of standard 2000/14/EC

- Machine with outside sound suppressing versionL

WA = 113 dB (A)

- - Standard machineL

WA = 118 dB (A)

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GENERAL SPECIFICATIONS

Fuel system

The fuel pump sucks the fuel from the tank. be-tween the tank and the fuel pump, the fuel flowsthrough two interchangeable cartridge fuel filters,one a water separator, the other filtering the impu-rities in the fuel.

Air intake

Dry air cleaner with replaceable paper cartridges,turbo charged by turbocharger type HOLSET HX55TURBO equipped with WASTGATE valve and aftercooler.

TRANSMISSION

Hydraulic torque converter with maximum stall ratio2.3 : 1.

"Power shift" transmission, with three forward andthree reverse speeds, with electric FINGER TIPCONTROL. Neutral button cutting-off directly thespeed engaged, shifting the transmission into neu-tral.

AUTO SHIFT function button.

Safety device lever that in "locked" position preventsthe gear shifting of the transmission and engagesautomatically the service brakes.

Oil cooling of the torque converter/transmission circuitby oil-air radiator.

Transmission oil filtration by two full flow filters; onemetal mesh and magnetic rod on suction, the other onthe delivery with built-in by-pass valve.

Final drives

Central reduction with bevel gear set at the centre ofthe rear transmission housing.

Single reduction final drive.

Planetary gear final drive.

Reduction ratio 1 : 15.6.

Oil-bath lubrication.

ENGINE

The engine complies with the regulations relativeto fume emissions "TIER2".

Type ..................... CUMMINS QSM 11-330/365 HP

Direct injection, turbocharged, after-cooled, 4-strokediesel

Bore ............................................................125 mm

Stroke .........................................................147 mm

Total displacement ........................................ 10.82 l

Compression ratio ....................................... 16.3 : 1

6 in-line cylinders, firing order ..................1-5-3-6-2-4

Max. net power at flywheel:- 221 kW at 2100 rpm- 253 kW at 1800 rpm

Maximum torque (at 1400 rpm) ............ 167,4 daNm

Lubrication

Forced lubrication by gear type pump.

Minimum allowable lubrication:- At low idle ..................................... 0.8 bar (12 Psi)- At nominal speed ........................ 2.04 bar (35 Psi)

Quantity of oil in the sum .... 35 litres (9.2 U.S. Qts.)

Coolant system

Water, circulated by centrifugal pump, integrallymounted. The coolant flows from the oil heat ex-changer in the block, then passing to the cylinderhead.Radiator equipped with 8-blade blowing fan.Water circulation from the engine to the radiatorregulated by thermostat.

Thermostat setting ..................................82 ÷ 93 °C

Max. opening ..................................................95 °C

Temperature in upper tank

Maximum allowed ...................................... 101,6 °C

Minimum recommended ................................ 100 °C

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STEERING DIFFERENTIAL

The steering differential provides the steering of themachine without stopping the track chain, transmittingcontinuously power to both track chains when steer-ing, also with tight turns. With both track chainsmoving, it is possible to push larger loads at maximumspeed as well.

The steering occurs by increasing the speed of onetrack chain and the slowing-down of the other one, inequal measure. The speed differential makes themachine steer. The steering system operates as adifferential and it is composed of: a pump, a hydraulicmotor and the relevant controls actuated by a singlemovement of the fingers.

BRAKES

Oil-bath disc brakes

The single pedal in the cab actuates simultaneouslythe brakes of both track chains, both as service andemergency devices. The machine is prevented frommoving with the parking brakes engaged. A manualsystem provides the disengagement of the brakeswhen there is no hydraulic pressure, to provide thetowing of the machine in the event of failure.

Parking brake: automatically engaged, by loweringthe transmission safety lever or engine inoperative.

HYDRAULIC SYSTEM

The hydraulic system, fully load-sensing, controlswith the best efficiency, the hydraulic power requiredby the steering/equipment circuits.

The delivery on the steering circuit is prioritised whenpower is requested at the same time, on the equipmentcontrols. The circuit is composed of a variable dis-placement piston pump and an hydraulic motor, dis-tributing power appropriately to each track chain duringthe steering.

UNDERCARRIAGE

Composed by two frames of a boxed and weldedstructure type. The frames are connected frontally bya swinging cross-member and are hinged at the rear onthe PIVOT-SHAFT.

Lubricated track chains.

Seven permanently lubricated bottom rollers and twosupport rollers for each track frame.

Sprockets with replaceable sectors toothed crown.

Permanently lubricated idlers, with hydraulic trackchain tensioner.

- Number of bottom rollers per track chain: ........... 7

- Number of support rollers per track chain: .......... 2

- Number of shoes per track chain: .................... 44

- Width of standard shoes: .........................610 mmoptional: ...............711 mm

ELECTRICAL SYSTEM

Power voltage 24 Volt.

Alternator: DELCO REMY 70 Amp.

Starter motor: DELCO REMY 9.5 kW (type 42 MT)Starter motor with solenoid operated automatic pinionengagement.

Batteries: Two 12 Volt batteries connected batteries,180 Amp.Maintenance-free type.

CAB

Modular type cab, elastically mounted on elasticblocks, integrated by FOPS safety structure.

The cab ensures an excellent visibility of theblade and the rear attachments for maximumproductivity.Also, the cab ensures maximum comfort to theoperator at all times.

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WEIGHT AND SPEEDS

The weight of the machine with HSU bulldozer bladeplus arms and lifting cylinders plus linkages, withoutripper, safety cab, fluids and operator: 35,900 kg(79,150 lbs)

Maximum speeds (forward-reverse) in km/h:

Speeds I II III

- forward 3.8 6.1 10.3 - reverse 4.4 7,1 11.4

RIPPER (optional)

Model ...................................................... RPMD350

Of a parallelogram type, with welded plate elementframe. Three position tool bar with a semi curved typetool, with interchangeable tips.

Controlled by 4 double stroke hydraulic cylinders.

Weight: .................................... 3,200 kg (7,050 lbs)

AUXILIARY APPLICATIONS

Some of the equipment described and illustrated inthis Manual are provided in determined markets tosatisfy specific requirements.

Other devices and special applications are providedupon request, in agreement with the Sales Organisa-tion.

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BLADE TYPE

Semi-U (HSU)

Angolable (HA) Ž

Full-U (HU)

Bladewidthmm

3975

4620

4295

Bladeheight

mm

1700

1145

1650

Bladecapacity

m3

9.1

4.5

11.4

Tilt

mm

900

470

975

Pitch

13°

10°

13°

Diggingdepthmm

600

685

600

Blade liftingfrom ground

mm

1220

1140

1220

MAIN DIMENSIONS

3243

5282

8234

3500

2134

2744

(*)3375

D350M0006

Ž Maximum angle: ± 25°.

520

(*) 610 mm shoes or 711 mm shoes

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STABILITY

POSITION OF THE CENTRE OF GRAVITYIn transportation condition

Note - the centre of gravity depends upon the positionof the equipment.

The machine, as delivered by the plant, is notintended for any other application and, in particu-lar, should not be considered for use as a mean forhooking, lifting or moving suspended loads.Any different usage, therefore, MUST BEAVOIDED, unless the machine has been originallyprovided, by the Manufacturer, with special equip-ment and particular instructions for specific appli-cations.

WARNING

MACHINE W/ BLADE & RIPPER LG (mm) HG (mm)

W/ blade and ripper on the ground 1680 1960

W/ blade on ground and ripperat max. height

1665 1990

W/ blade at max. height and ripperon ground

1670 1095

W/blade at max. height and ripperat max. height

1660 1115

MACHINE W/ BLADE ONLY

Blade on the ground 1940 1880

Blade at max. height 1910 1015

MACHINE W/OUT BLADEAND W/OUT RIPPER 1465 1000

Note - L G = Horizontal distance from sprocket C/LH G = Ground clearance

HG

LG

D350M0007

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LIST AND LOCATION OF SAFETY DECALS

All the safety plates applied on the machine to provide maximum operational safety against unavoidable risks, arelisted here below: They have been divided into four groups:

Group A - danger decalsGroup B - warning decalsGroup C - general-purpose decalsGroup D - manoeuvre decalsGroup E - ROPS-FOPS homologation plates

The exact location on the machine is found in the figure here below.

1A FIELD OF OPERATION SAFETY DECAL

A 2A TRACK TENSIONER SPRING DECAL

3A TRACK TENSIONER SAFETY DECAL

1B FLUIDS UNDER PRESSURE DECAL

2B OPERATION SAFETY DECAL

4B BATTERY WARNING PLATE

5B SWITCH DECAL

6B BATTERY SAFETY DECAL

7B ENGINE-FAN PLATE

8B BRAKES SAFETY DECAL

9B MANOEUVRE SAFETY DECAL

10B HOT ZONE WARNING DECAL

11B CAB TILTING SAFETY DECAL

1C MAINTENANCE DECAL

2C STEERING CLUTCH OIL PLATE

1D EQUIPMENT OPERATION DECAL

2D MACHINE LIFTING DECAL

3D CONTROLS WARNING DECAL

4D THROTTLE CONTROL DECAL

5D EQUIP./TRANSM. CONTROL WARNING DEC.

6D RIPPER CONTROL DECAL

7D MASTER SWITCH DECAL

1E CAB SAFETY STRUCTURE PLATE

2E ROPS SAFETY STRUCTURE PLATE

3E MARKING PLATE WITH OPERATOR'S PLACE

4E MARKING PLATE WITH CAB

LIST OF DECALS

A

B

C

D

E

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LOCATION OF SAFETY DECALS

3550-M009

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D350M0139

4D

5D

D350M0138

7B

D350M0137

7D DETAIL A

D350M0136

5B

"A"

D350M0135

2B

3D

1D

6D

D350M0008

9B

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DANGERFLUID UNDER PRESSURE

DO NOT REDUCE THE TENSION OF THE TRACK CHAIN BY LOOSENING THE PRESSURE RELIEF VALVE. DO NOT REMOVE THE GRASE FITTING INSTALLED ON THE ADJUSTMENT VALVE. COMPLY WITH THE PROCEDURE RECOMMENDED IN THE "REPAIR INSTRUCTION MANUAL".

DANGERTHE RETURN SPRING OF THE IDLER IS INSTALLED ON THE MA-CHINE WITH A CONSIDERABLE COMPRESSION LOAD. TO INSTALL AND REMOVE THIS PART COMPLY WITH THE PROCEDURES DE-SCRIBED IN THE " REPAIR INSTRUCTION MANUAL "

LIST OF SAFETY DECALSGroup A - Danger decals

1A

2A

3A

W170-3M012

D350M0041

D350M0042

76035797 S 76

76035792 S 76

DANGER

KEEP CLEAR

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DANGERFLUID UNDER PRESSURE

PRIOR TO REMOVING THE CAP OR THE COVER TURN IT SLOWLY TO RELEASE THE PRESSURE.REFER TO THE "OPERATION AND MAINTENANCE MANUAL".

LIST OF SAFETY DECALSGroup B - Warning decals

2B

D350M0009

4B

D350M0014

1B

D350M0043

79100862 S 76

DANGERPRIOR TO STARTING, ACTUATING THE CONTROLS, REFILLING THE MACHINE OR PERFORMING ANY MAINTENANCE INTERVENTION, CONSULT THE "OPERATION AND MAINTENANCE MAN-UAL" LOCATED IN THE APPROPRIATE COMPARTMENT. IN THE EVENT THE MANUAL IS MISSING, CONTACT THE FIAT KOBELCO ORGANISATION. IT IS A PRE-CISE RESPONSIBILITY TO ENSURE THE CORRECT OPERATION AND MAINTE-NANCE OF THE MACHINE. A WRONG OP-ERATION CAN CAUSE DAMAGES AND EVEN FATAL INJURIES.

EYE PROTECTION

EXPLOSIVE GAS

EVOID SPARKS OROPEN FLAMES

SULPHURIC ACID

DANGER EXPLOSIVE GASES

TOXIC CAUSES SEVERE BURNS

ALWAYS PROTECT THE EYES AND FACE FROM THE BATTERY.CIGARETTES, OPEN FLAMES OR SPARKS CAN IGNITE THEEXPLOSION OF THE BATTERY. DO NOT CHARGE BATTERIES, NOR USE AUXILIARY CABLES, AND MODIFY TERMINALS WITHOUT COMPLYING WITH THE APPROPRIATE INSTRUCTIONS.

IT CONTAINS SULPHURIC ACID. AVOID ANY CONTACT WITH THE SKIN, EYES AND CLOTHING. IN THE EVENT OF ACCIDENT FLUS WITH WATER AND SEEK MEDICAL HELP AT ONCE.

KEEP AVAY FROM THE CHILDREN.

PRIOR TO STARTING, ACTUATINGTHE COTNROLS, REFILLING THE MA-CHINE OR PERFORMING ANY MAINTE-NANCE INTERVENTION, CONSULTTHE "OPERATION AND MAINTE-NANCE MANUAL" LOCATED IN THEAPPROPRIATE COMPARTIMENT. INTHE EVENT THE MANUAL IS MISSING,CONTACT THE CNH ITALIA S.p.A. OR-GANISATION. IT IS A PRECISE RE-SPONSIBILITY TO ENSURE THE COR-RECT OEPRATION AND MAINTE-NANCE OF THE MACHINE. A WRONGOPERATION CAN CAUSE DAMAGESAND EVENF ATAL INJURIES.

WARNING

11B

3550-M012

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HOT AREAWARNINGTHE BRAKES ARE INOPERATIVE WHEN THEY ARE MANUAL-

LY DISENGAGED. THE MACHINE MUST BE SECURED WITH APPOPRIATE BLOCKING DEVICES.THE BRAKES ARE PROVIDED WITH STRONGLY LOADED SPRINGS. TO REMOVE AND INSTALL THE BRAKES, ALWAYS COMPLY WITH THE PROCEDURES RECOMMENDED IN THE REPAIR MANUAL.

WARNING

BLADES AND BELTS ROTATING WHEN THE ENGINE IS STARTING

OR OPERATING. KEEP AT SAFE DISTANCE.

WARNING

FLAMMABLE FUMESPRIOR TO CHECKING AND FILLING BATTERIESEXTINGUISH ALL SMOKING MATERIALS OR OPEN FLAMES.DO NOT CHECK BATTERIES BY SPARKING THE TERMINALS.

DANGER

5B

ALWAYS TURN THE MASTER SWITCH TOBLOCK POSITION BEFORE STARTING,OPERATING, MAINTAINING, FUELLING ORSERVICING THE MACHINE AND AFTERPARKING IT.

9B

THIS MACHINE IS EQUIPPED WITH APOWER STEERING OPERATING ONLYWHEN THE ENGINE IS IN OPERATION.

THIS MACHINE IS EQUIPPED WITH ANEMERGENCY SYSTEM ACTUATINGTHE BRAKES WHEN THE ENGINE ISCUT-OFF.

THE EQUIPMENT OR VARIOUSATTACHMENTS CAN BE LOWEREDBY MOVING THE CONTROL LEVERWITH ENGINE OPERATING ORINOPERATIVE.

WHEN A ROPS STRUCTURE ISMOUNTED, THE USE OF SAFETYBELTS IS RECOMMENDED.

DO NOT CARRY RIDERS UNLESS THEMACHINE IS PROPERLY EQUIPPED TOTRANSPORT PASSENGERS

FOR NOISE LEVELS EXCEEDING 90 dBFOR CONTINUOUS WORK SHIFTSEXCEEDING 8 HOURS, WEARAPPROVED EAR PROTECTIONS.

MONITOR CONSTANTLY THE WORKAREA TO IDENTIFY DANGEROUSSPOTS. A FEW EXAMPLES OFDANGEROUS WORKING CONDITIONSARE: DITCHES, FORESTS, ROCKOVERHANGS, DEMOLITION, FIRES,LAND FILLING, UNEVEN GROUND,INTENSE TRAFFIC, CROWDEDPARKING, CROWDED MAINTENANCEAREAS AND FENCED ZONES.PAY GREATER ATTENTION IN THEZONES MENTIONED ABOVE.

KEEP FLAMMABLE MATERIALS AWAYFROM THE ZONES NEAR ENGINEEXHAUST MANIFOLDS AND DUCTS.CUT-OFF THE ENGINE FOR CLEANINGOPERATIONS.

WARNING WARNING

D350M0140

D350M0141

7B

8B

6B

10B

D350M0046

D350M0044

D350M0045

79012610 S 76

79031092 S 76

76066220 S 76

76034930 S 76

D350M0047

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STEERING

OIL SU M P

LIST OF SAFETY DECALSGroup C - General purpose decals

2C

D350M0011

D350M0013

1C

2 29 11 22 23 28 3 24 18 12

6

20

125211716159251710

13

26

MACHINE MAINTENANCE AND LUBRICATION INSTRUCTIONS

OPERA-TIONS

MAINTENACE INTERVAL HOURS

1234567891011121314151617181920212223242526272829

10 50 250 500 1000 2000

Ø✗

✚Ø

DESIGNATION OF THE POINT OF INTERVENTION NO. POINTS

11132112

1122

2111

1111166

11

TYPE

EO

TFPGLEOHO

PGLMPL

PGL

PGL

APPROX.CAPACITY

35 L37 L68 L

5 STROKES

175 L145 L

5 STROKES

51 L

5 STROKES

5 STROKES

ENGINE: OIL LEVEL ★RADIATOR: COOLANT LEVELTRANSMISSION-TORQUE CONVERTER: OIL LEVELFRONT EQUIPMENT AND RIPPER: GREASE FITTINGSSTEERING PLANETARY SYSTEM AND BEVEL GEAR SET: OIL LEVELHYDRAULIC SYSTEM: OIL LEVELFUEL FILTER

ENGINE: OIL FILTER ★COOLANT FILTERIDLER: GREASE FITTINGFINAL DRIVES: OIL LEVELSBELTS (ALTERNATOR, FAN, WATER PUMP)

TRACK FRAME PIVOT PINS: GREASE FITTINGSTRANSMISSION-TORQUE CONVERTER: DELIVERY FILTERSTEERING PLANETARY SYSTEM AND BEVEL GEAR SET: RETURN FILTERHYDRAULIC SYSTEM: RETURN FILTER

FUEL TANK: DRAINING OF CONDENSATIONTRANSMISSION-TORQUE CONVERTER: SUCTION FILTERTRANSMISSION-TORQUE CONVERTER: BREATHERSTEERING PLANETARY SYSTEM AND BEVEL GEAR SET: SUCTION FILTERSTEERING PLANETARY SYSTEM AND BEVEL GEAR SET: BREATHERENGINE: CALIBRATION OF INJECTORSENGINE: VALVES

PROPELLER SHAFT: GREASE FITTINGSENGINE: BREATHER

WRENCH

✓ = CHECK ✗ = REPLACE ✚ = LUBRICATE Ø = CLEAN

THE TRACK SUPPORT ROLLERS

AND THE IDLERS DO NOT REQUIRE SERVICING

LUBRICANTS AND SPECIFICATIONSSYMBOL TYPE

EO

MPL

TF

PGL

HO

ENGINE OIL COMPLYING WITH STANDARD API CF 4/SG EMIL L - 2104-E CONTENT OF SULPHURED ASHES 1.8% MAX.

RECOMMENDED ALTERNATIVE

AMBIENT TEMPERATURE° C (° F)

ABOVE -10 (-50)FROM -25 TO 20 (-13, 68)

BELOW - 25

SAE VISCOSITY

15 W -4010 W -30

ARCTIC OIL -PLEASE REFER TO THE MANUAL

AMBIENT TEMPERATURE° C (° F)

ABOVE 10 (50)FROM 0 TO 35FROM -10 TO 10FROM -25 TO 0

SAE VISCOSITY

4030

20, 20W OR 20W -2010W

GEAR OIL. HIPOIDE 90 COMPLYING WITH AL MIL - L - 2105 - D

TRANSMISSION OIL C - 3 10W OR ENGINE OIL QUALIFIED FOR API CF/4SG AND MIL - L - 2104E 10 W SERVICE FORTEMPERATURES ABOVE -23 °C (-10 °F).(FOR TEMPERATURES BELOW -23 °C (-10 °F)REFER TO THE OPERATION AND MAINTENANCE MANUAL).

PUMPABLE GREASE (LUBRICANT FOR BALL AND ROLLER BEARINGS WITH A MINIMU MELTING TEMPERATURE OF 150 °C -302 °F) THENUMBER OF STROKES DEPENDS UPON THE TYPE OF PUMPING (1 STROKE = 1.5 GRAMS).

HYDRAULIC OIL QUALIFIED DIN 51524 PART 1 / PART 2 - ISO VG46.

★ THESE SERVICE INTERVALS MUST BE 100 HOURS IF THE SULPHUR CONTENT EXCEEDS 0.5 %.

NOTE: REFER TO THE OPERATION AND MAINTENANCE MANUAL FOR FURTHER DETAILS.

76073212 S 76

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LIST OF SAFETY DECALSGroup D - Manoeuvre decals

1D

3D

5D

BEFORE STARTING OR OPERATING THEMACHINE, READ THE "OPERATION ANDMAINTENANCE" MANUAL.

BEFORE LEAVING THE OPERA-

TOR'S SEAT, PLACE THE LEVER IN

LOCK POSITION

WARNING

WARNING

6D

D350M0036

D350M0142 D350M0143

D350M0144

D350M0145

D350M0146

D350M0147

7D

ON

OFF

4D

2D

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LIST OF SAFETY DECALSGroup E - ROPS-FOPS homologation decals

With cab

4E

D350M0048

With operation position only

2E

D350M0016

With operation position only

3E

D350M0017

With cab

1E

D350M0015

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PRELIMINARY INSTRUCTIONS AND BREAK-IN PERIOD

PRELIMINARY INSTRUCTIONS

When delivering the machine, the Sales Organisationpersonnel provides the main instructions regarding itsoperation and maintenance to the Customer.This instructions are summarised in the list herebelow:- Decantation of fuel.- Check of capacities: coolant, fuel and lubricants.- Draining of deposits from the fuel reservoir.- Air bleeding of fuel system.- Starting and cutting-off the engine.- Rules for a safe conduct at work.- First period of operation.- Operation of the machine and of the equipment.- Lubrication and lubricants.- Maintenance of the air cleaner.- Maintenance of filters: fuel, engine oil and hydraulic

oil.- Maintenance of the engine cooling system (the

system is provided with a water/antifreeze mixtureof a glycol type).

- Maintenance of the hydraulic systems: torque con-verter/transmission, steering, equipment.

- Checking the on-board tooling.

Start the engine. Monitor all instruments and indicatorlights; actuate the controls of the machine to checktheir operation. Cut-off the engine and check if thereare eventual leakages from sleeves, pipes and con-nections.

BREAK-IN PERIOD

A break-in period of at least 60 hours, is required,following the directions listed here below:- after each cold steering, operate the engine a few

minutes at idle speed;- do not operate the engine at maximum power for

prolonged time;- check frequently, if there are oil or coolant leakages.

During the first period of operation of the machine,besides the normal maintenance operations listed inthe relevant chapter, it is recommended that supple-mentary operations are performed, which, at a laterstage, are carried-out ad longer intervals, as listedhere below:

Within the first 50 hours work:- change the engine oil and relevant filter.

Within the first 250 hours work:

- change the torque converter/transmission oil and therelevant filter;

- replace the filter on the hydraulic oil return to tank.

Within the first 300 hours:

- check the fuel feeding system and the engine valveclearance.

The above rules must be complied with after possibleoverhauls, as well.

Daily maintenance procedures:

- engine oil level check;

- belts tension check;

- fuel filter condensation draining;

- engine coolant level check;

- hydraulic system oil level check;

- transmission/torque converter oil level check;

- bevel gear set, steering and brakes oil level check;

- lubrication of cylinders, blade and ripper pivot pins.

WARNING

Never perform interventions with engine running,except as called for in this Manual.Before operating or performing any interventionon the machine, read carefully all the rules listedin this Manual.

WARNING

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust gases.Be sure exposed personnel in the area of operationare clear of the machine before moving it or itsattachments.

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3550

OPERATION RULES

Study carefully this Manual before starting, oper-ating, maintaining, fuelling or servicing themachine.

This alert symbol signals important mes-sages involving your safety. It means: WARN-ING! BE ALERT! IT INVOLVES YOUR SAFETY.

Read and heed carefully all safety instructionsidentified by the key words WARNING and DAN-GER.

Do not operate machinery in a condition ofextreme fatigue or illness; do not jump on or offthe machine; use the appropriate handrails andsteps which must always be kept clean. Alsokeep the operator's compartment clean; all toolsand/or personal belongings not required on themachine must be removed or be secured.

This machine and its equipment must be operat-ed exclusively by qualified personnel, seating inthe operator's seat.

Your safety and the safety of bystanders dependsupon your prudence and common sense inoperating this machine.It is necessary to be acquainted with the locationand function of all controls and with stabilityfeatures of the machine before starting to oper-ate.

Before starting machine, check, adjust and lockthe operator's seat for maximum comfort andcontrol of the machine.

Be sure exposed personnel in the area of opera-tion are clear of the machine before moving it orits attachments. WALK COMPLETELY AROUNDthe machine before mounting.

Sound horn.

WARNING

Keep all persons away form equipment beingraised to avoid possible injuries.

Never attempt to operate the machine or its toolsfrom any position other than seated in the opera-tor's seat. Under all circumstances, keep head,body, limbs, arms and feet inside the operator'scompartment to minimise the possibility of ex-posure to external dangers.

Make sure that the portion of the engine exhaustsystem under the hood is sealed.

In darkness, check area of operation carefullybefore moving in with machine. Use all lightsprovided. Check, during daylight as well, that alllights are operating. Replace burnt bulbs atonce.

NEVER LEAVE THE MACHINE UNATTENDEDwith the engine running. The equipment can belowered moving the control lever with enginerunning or inoperative.

Always, before leaving the operator's seat andafter making sure all people are clear of themachine, slowly lower the attachments or toolsflat to the ground in a positive ground supportposition.Move eventual supplementary equipment toclosed and safe position.Return all controls to rest position.Place engine controls on cut-off position.Lock all controls and disconnect the starterswitch.

Do not park the machine on a slope, withoutblocking it accurately, to prevent any movement.

Always engage the parking brake, before leavingthe machine.

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D35

0M01

48

5-

Unl

ock

the

trans

mis

sion

and

impl

emen

tco

ntro

l sa

fety

dev

ices

, m

ovin

g th

ele

vers

fro

m p

ositi

on “

A”

into

pos

ition

“B”.

2-

Mak

e sh

ure

that

the

tra

nsm

issi

on a

nd i

mpl

emen

t co

ntro

lsa

fety

dev

ice

are

in p

ositi

on “

A”.

STA

RT

ON

AC

C

OFF

H

3-

Inse

rt th

e ke

y in

to t

he s

tarte

r sw

itch,

pus

h it

in a

ndtu

rn it

into

pos

ition

“STA

RT”

.W

arm

-up

the

engi

ne fo

r at l

east

5 m

inut

es.

4-

Adj

ust t

he e

ngin

e sp

eed

oper

atin

g on

the

leve

r “A

”(t

hrot

tle c

ontr

ol).

6-

Rai

se t

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quip

men

t m

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g th

e bl

ade

cont

rol

leve

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topo

sitio

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”.

7-

To

mov

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ne:

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ove

the

L co

ntro

l in

“F” p

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on fo

r (fo

rwar

d sp

eed)

, or i

n “R

” pos

ition

for (

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the

switc

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” to

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ain

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ral p

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on.

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e us

ing

the

leve

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ake,

pre

ss th

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dal “

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9-

At t

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f the

ope

ratio

ns: c

ut-o

ff th

e en

gine

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scon

nect

the

star

ter s

witc

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pen

the

exte

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left

pane

l and

turn

the

mai

n sw

itch

into

pos

ition

“OFF

”.

4-7

7

2-5

7-8

1-9

2-5 6

3

B

Sta

rter

sw

itch

Mai

n sw

itch

A

B

B

7

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A

A

B

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rn th

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ain

switc

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on “

ON

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Mai

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8-

For

ste

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d, p

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A”

leve

r, f

or s

teer

right

war

d pu

ll th

e “B

” le

ver.

F P S

LN

N

B

R

A

D35

0M01

27

D35

0M01

54

D35

0M01

48

A

D35

0M01

49

D35

0M01

53D

350M

0152

D35

0M01

55

D35

0M01

50

D35

0M01

58

D

D35

0M01

56D

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0157

D35

0M01

51

D35

0M01

49

A

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3550

CONTROLS AND INSTRUMENTS

For the version equipped with ROPS structure, com-ponents 5, 7, 8 are located on the dashboard, asindicated.

Note - The terms left and right used in this text, areintended as referred to the operator seating in its seatfacing forward.

1. Safety lever (equipment control and gearshiftinglever locking)

2. Neutral button3. Blade control lever4. Ripper control lever5. Engine starter switch6. Ashtray7. Cigarette lighter - 24V DC Power Outlet8. Horn9. Air inlet ducts10. Cab heating and ventilation controls11. Transmission control buttons and direction

control lever (Forward/Reverse)

12. AUTO SHIFTING "AS" function button (Optional)13. Steering control levers14. Armrest adjustment levers15. Transmission safety lever

(Gearshifting lock)16. Instrument panel17. Switch and indicator panel18. Engine throttle lever19. Engine decelerator control pedal20. Electrical system master switch21. Brake pedal22. CUMMINS engine monitor panel

on ROPS

3550-M006

11

159

13

12

10

9 98

7

6

5

4

3

9

1

1419182116

14

20

217

22

D350M0018

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0

n/min

1000

1 2

3

A

1. SAFETY LEVER (Equipment controland gearshifting lever lock)

The device, lifted as illustrated in the figure in positionA (vertically) blocks the EQUIPMENT CONTROLLEVERS AND THE GEARSHIFTING BUTTONS inneutral position.This is to avoid unwanted movements of levers (3-4)and buttons (11) which could cause dangerous ma-noeuvres. In this position, the parking brake is auto-matically applied.Position B: it activates the equipment control levers,the gearshiftng buttons and disengages the parkingbrake.

Position A = neutralPosition B = operation position

2. NEUTRAL BUTTON

3. BLADE CONTROL LEVER

The lever controls the raising, lowering and tilt of theblade.To raise or lower the blade, move the lever backwardinto position D or forward into position H, respectively.The blade stops in the desired position, in bothinstances, when the lever is released and returnsautomatically in neutral N.To float the blade, i. e. resting on the ground under theeffect of its weight only, press the button located onthe pilot valve and push forward the lever to stroke endat the same time, into position F, where it is kept by anappropriate detent.The floating condition is terminated when returning thelever into position neutral N.When the lever is moved leftward into position A, orrightward into position B, the blade is tilted. The levermust be held until the blade reaches the desired tilt.

F

H

A B

D

D

H

A

3550-M011

3550-M013

D350M0159

B

F

N

Blade controllever

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3550

50

n/min

1000

1 2

3

A

Safetyleverindicators

4. RIPPER CONTROL LEVER (upon request)

- With lever forward in P = lowering the ripper.- With lever backward in R = raising the ripper.- With lever forward + button = opening pitch.- With lever backward + button = closing pitch.- With lever at centre in N = neutral position.

5. ENGINE STARTING SWITCH

WARNINGPrior to starting the engine, make sure that thegearshifting lever is in neutral position and the parkingbrake is engaged.

The starter switch is used to start and cut-off theengine.To operate it turn the key.

on CAB

on ROPS

D350M0036

3550-M003

D350M0038

Engine starting switchand key

3550-M004

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Positions:

OFF - Position allowing the insertion and removalof the starter key. Engine inoperative.

ACC - All functions related to electrical systemservices are activated. The indicator lightsonthe instrument panel (see Instrumentpanel) come ON.

ON - All other functions of the electrical systemare activated and the safety lever indicatorlights come ON

START - The functions relative to position "ACC" arecut-off. Starting of the engine. The switchreturns automatically to position "ON"when the key is released.

In the event the engine fails to start, wait for 30seconds before a new attempt; this is to protect thebatteries and the starter motor from overheating.

Note - For particularly frigid temperatures (down to-15 °C (-5 °F)) use an engine oil with appropriateviscosity and fuel with low temperature additives.Down to - 20 °C (- 4 °F) the use of artic fuel and largerbatteries (180 Ah - 770 A) is recommended.

6. ASHTRAY

7. 24V DC POWER OUTLET/CIGARETTE LIGHTER

The power outlet is equipped with cigarette lighter (onthe option with cab) and can be used to feed 24V DCpower supply to a trouble lamp or a fuel transfer pump.

8. HORN

9. VENTILATION DUCTS

10. CAB HEATING AND VENTILATIONCONTROLS

(For the setting of the controls, refer to the cab)

Safety lever indicator lights

D350M0019

Starter key

6 7 9

8

D350M0039

D350M0160

WARNINGUnder forced starting conditions (i.e. low ambienttemperatures) don not insists beyond three at-tempts of 30 s max. each, intervalled by at least a2 minutes pause, to avoid thermal overheatingdamaging electrical components. After the thirdattempt, let the starter solenoid to cool-off to atemperature of 25 °C (77 °F).

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3550

11. GEARSHIFTING GROUPE

The machine is equipped with three forward and threereverse speeds. The controls are electrically actuatedby the following buttons, located in the left side of thecab, on the ergonomic armrest.With the two safety levers lowered, when lever L isturned and pushed forward into position F the machinemoves forward, selecting 1st gear.

F. Selection of forward speed - L. Direction selectionlever (forward/reverse) - R. Reverse speed selection

ButtonsP. Upshifting - S. Downshifting - N. Neutral.

On the contrary, when turning and pulling lever L intoposition R, the transmission shifts into 1st REVERSEand the machine moves backward. When engagingthe reverse direction, a back-up alarm sounds. Thegear shifting and the direction reversing can be per-formed with the machine standing or in motion. Whenpressing button P it is possible to upshift to the mostappropriate speed from 1st through 3rd.To downshift, for example from 3rd to 1st, it isnecessary to push button S twice.When pressing button N, the transmission is shiftedinto neutral, not withstanding the gear or directionselected.

Selecting forward speed ("F")

When pressing button ("F") the machine is set in 1stforward.When pressing, afterward, button P, the speeds areupshifted.When pressing S the downshifting to the lower speedoccurs. The display on the dashboard shows thespeed engaged.

F

RN

Selection of reverse ("R")

When turning lever L into position ("R") the machineshifts automatically into 1st REVERSE, so that themachine can move backward only, with the possibilityof choosing always among 1st, 2nd, 3rd, with buttonsP or S.In the event, for example, the machine operates in 2ndforward and the direction is reversed, moving thegearshifting selector lever into position "R", there is anautomatic shifting from second forward into 2nd re-verse.

INVERSION LOGIC

The gears are selected in accordance with the follow-ing inversion logic:

if in 1a F and R is pressed it shifts into 1a Rif in 2a F and R is pressed it shifts into 2a Rif in 3a F and R is pressed it shifts into 3a R

if in 1a R and F is pressed it shifts into 1a Fif in 2a R and F is pressed it shifts into 2a Fif in 3a R and F is pressed it shifts into 3a F

Gear upshifting (P)

The transmission gears are upshifted each time buttonP is pressed, to select the most appropriate workingspeed, up to 3rd gear.

Gear downshifting (S)

To downshift, press button S.

P

S

L N

D350M0077

1850-2M0150

Display on the dashboard

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Steering to the right

When pulling gradually the right lever, the rightwardsteering is obtained. the right track chain slows-downwhereas the left track chain accelerates in the sameamount. The speed differential steers the machine.The more the stroke of the lever the more is the turningof the machine.

Steering to the right

When button AS is pressed, there is an intervention onthe direction reversing logic.When pressing the AUTO-SHIFT button once, theoption is activated and the symbol AS appears on thedisplay (when an EXXX error signal is not present).The option is cut-off by pressing the button a secondtime.The gears are selected in accordance with thefollowing reversal logic.

REVERSAL LOGIC(with "as" function activated)

if in 1st F and pressing R shifting into 2nd R

if in 2nd F and pressing R shifting into 2nd R

if in 3rd F and pressing R shifting into 3rd R

if in 1st R and pressing F shifting into 1st F

if in 2nd R and pressing F shifting into 1st F

if in 3rd R and pressing F shifting into 1st F

12. AUTOSHIFT "AS" FUNCTION

Button AS is selected when a work cycle must beperformed with frequent FORWARD - REVERSE move-ments. The system is arranged in 1st forward for thework phase and 2nd reverse for the backward travel.

AS: AUTO-SHIFT button.

13. STEERING CONTROL LEVERS

D350M0079

D350M0080

D350M0081

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3550

14. ARMREST ADJUSTMENT LEVERS

To adjust the position of the transmission/steeringcontrol armrest to the needs of the operator, proceedas described here below.

15. TRANSMISSION SAFETY LEVER

This device can have two positions.

Position A (vertical): in this position it is possible tostart the engine.When parking with engine in operation, the gearshiftingbuttons are neutralised. This is to avoid that anunwanted shifting could cause dangerousmovements. In this position, the parking brake isengaged.

Position B (lowered): the lever allows the shifting ofgears and releases the parking brake.

Position A = neutralPosition B = in operating position

Leftward steering

When pulling gradually the right lever, the rightwardsteering occurs, the right track chain slows-down,whereas the left track chains accelerates in the sameamount. The speed difference makes the machinesteer.The higher the lever stroke is, the higher the steeringof the machine is.

Rightward steering

Neutral button

When neutral button N is pressed, the transmissionshifts directly into neutral, thus in this position it is notpossible to perform the counter-rotation (the trackchains move in opposite directions). When the left orright levers are pulled, it is possible to steer themachine.

To adjust the height and the angle, loosen lever A,adjust as required and lock it again.For the horizontal setting on the sliding guide, loosenlever B, adjust (forward/backward) and lock it when theforearm is in the optimised working position.(Stroke about 100 mm).

A

Armrest

B

N

D350M0082

D350M0084

D350M0083

B

A

D350M0085

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16. INSTRUMENT PANEL

Indicator lights and instruments

0

1 2

3x 1000

n/min

1850-M0001

L2L1 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12

DL1

S1

S3 S4

S2

DL2

L1. Battery charge indicatorL2. Engine oil pressure indicatorL3. Engine air cleaner indicatorL4. Hydraulic oil filter indicatorL5. Transmission oil pressure indicatorL6. Transmission oil temperature indicatorL7. Brake failure indicatorL8. Optional red lampL9. General alarm indicator

L10. Front work lights indicatorL11. Rear work lights indicatorL12. Headlights indicator + dashboard lightDL1. Fuel reserve LED indicatorDL2. Engine coolant temperature LED indicatorS1. Fuel level instrumentS2. Engine coolant temperature gaugeS3. DisplayS4. Rev. counter.

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3550

L1. Battery charge indicator

The indicator light comes ON when the charging of thebatteries is insufficient.

L2. Engine oil pressure indicator

The indicator light is activated when the pressure ofthe engine lube oil drops below a defined value. Also,it comes ON when the engine oil filter is clogged.

L3. Engine air cleaner indicator

The constant glowing of the indicator signals theclogging of the air cleaner cartridges, requiring clean-ing or replacement.

L4. Hydraulic oil filter indicator

The activation of the indicator signals the clogging ofthe oil filters, which require to be replacement.

L5. Transmission oil pressure indicator

The activation of the indicator signals an insufficientpressure, which could be caused by:- clogged oil filters;- use of oil with a viscosity not appropriate for the

ambient temperature;- abnormal operation of the system.If required, perform appropriate inspections taking thenecessary corrective actions; if the trouble persists,contact the service organization.

L6. Transmission oil temperature indicator

The activation of the indicator signals an excessivelyhigh temperature of the oil; trouble which could becaused by:- clogged oil suction filter;- prolonged operation of the machine under irregular

conditions;- abnormal operation of the hydraulic system.Overheating of the oil must be avoided since it altersthe specifications of the oil and jeopardizes operationof the components.Operating with oil at temperatures relatively high ispermitted for short periods, provided that the enginecoolant, circulating in the heat exchanger and coolingthe oil, does not reach excessive temperatures.

Notice – In any case, keep in mind that in order to obtainmaximum performance by the torque converter, the speedengaged must be appropriate for the work to be done.

L8. Optional red lamp

L9. General alarm indicator

It warns the operator with a dual signal (sound andflashing light) about possible functional troubles sig-nalled by the indicators.When the general signal operates, it is necessary:- to stop the machine and cut off the engine;- to disengage the electrical system master switch;- to take the measures required to eliminate the cause

of the trouble. If the trouble persists, contact theservice organization.

L10. Front work lights indicator

The indicator light comes ON when the switch isengaged.

L11. Rear work lights indicator

The indicator light comes ON when the switch isengaged.

L12. Headlights indicator + dashboardlight

The indicator light comes ON when the switch isengaged.

DL1. Fuel reserve LED indicator

The activation of the indicator light signals that it isnecessary to refuel.

DL2. Engine coolant temperature LED indi-cator

It comes ON when the temperature of the coolant in theradiator is too high.

L7. Brake failure indicator

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INSTRUMENTS

Coolant temperature

This instrument indicates the temperature of the cool-ant.

When the temperature is too high (red zone), theindicator light (DL2, indicator lights figure) comes ON,signalling that the engine is overheating. Run enginewith no load until temperature drops.

Display S3

The display shows three functions:A) - Digital hourmeter, indicating the total work hours

and it is automatically activated when the ignitionswitch is turned on (four, five and six digit);

B) - Speed engaged: one (five and six for AL/ASfunctions) digit;

C) - Error codes, one (with 0) and three, four, five andsix digit (for example 0 E016).

Fuel levelIt indicates the level of the fuel in the reservoir. Whenthe pointer is near the red zone, indicator light (DL1)comes ON, signalling an "empty reservoir". Refuel assoon as possible.

S3 S41850-2M0074

0

1 2

3x 1000

n/min

DL2

S2

1850-2M0073

S1

DL1

1850-2M0075

1850-2M0151

Tachometer (rpm x 1000)

It indicates the engine rpm.

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3550

When the failed component is one only, the displayshows a code listed in TABLE 1.For each trouble code, find the corresponding compo-nent. Ex: 0 E016

When the failed components are two, the displayshows a trouble code listed in TABLE 2, given by theaddition of two single codes listed in TABLE 1. As anexample, code 024 indicates that two parts are introuble. On the top, the column identifies, in corre-spondence with the "1st speed" solenoid (first failedcomponent).

1850-2M0153

1st speed solenoid trouble code

Reverse "R" speed solenoid trouble code

Trouble code on display

Failed component

Left prop. solenoid valve coilRight prop. solenoid valve coilForward "F" speed solenoidReverse "R" speed solenoid1 st speed solenoid3 rd speed solenoidLeft steering lever solenoidRight steering lever solenoid

RH prop. sol.valve coil

003002

LH prop. sol.Valve coil

001

For. "F"speed solen.

005006004

Rev. "R"speed solen.

009010012008

1 st speedsolen.

017018020024016

3 rdspeed solen.

033034036040048032

LH steer.lever solen.

065066068072080096064

RH steer.lever solen.

129130132136144160192128

TABLE 2

Whereas, on the left, it identifies the reverse speed "R". The crossing of the two components determines the troublecode, given by the addition of the two.

Reverse "R" speed solenoid trouble code = 008 +1st speed solenoid trouble code = 016

Trouble code for both = 024

TABLE 1Failed component Trouble code

Left proportional solenoid valve coil E001

Right proportional solenoid valve coil E002

Forward "F" speed solenoid E004

Reverse "R" speed solenoid E008

1st speed solenoid E016

3rd speed solenoid E032

Left steering lever solenoid E064

Right steering lever solenoid E128

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e f g hi

0

n/min

1000

1 2

3

A

0

n/min

1000

1 2

3

A

a b c d e f g h i

g. REAR WORK LIGHT ACTIVATION SWITCH

h. SAFETY LEVER INDICATORThe indicator lights come ON when the machineis started and the equipment control safety lever(1) and gearshifting safety lever (2) are in raisedposition (A) (NEUTRAL).The indicator lights go OFF, when the levers arelowered to operate the machine (Posit. B).

Position A = NEUTRALPosition B = operation position

17. SWITCH AND INDICATOR PANEL

a. FRONT/REAR 1 speed SWITCH (with cab only) - b. FRONT/REAR WASHER BUTTON (with cab only) - c. SIDEDOORS WASHER BUTTON - d. SIDE DOORS WIPER 2 speed SWITCH - e. LIGHT SWITCH - f. FRONT WORKLIGHT ACTIVATION SWITCH - g. Rear work light activation switch - h. Safety lever indicator - i. Indicator signallingthe presence of water in the fuel filter.

on CAB on ROPS

3550-M007 3550-M008

3550-M014

D350M0163

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3550

18

1921

0

n/min

1000

1 2

3

A

18. ENGINE THROTTLE LEVER

Forward = maximum acceleration.Backward = minimum acceleration.

19. ENGINE DECELERATION CONTROL PEDAL

When pressing the pedal, the engine rpm's are, mo-mentarily, reduced to slow idle.

20. ELECTRICAL SYSTEM MASTER SWITCH

The electrical system master switch is found whenopening the left panel, indicated in the figure. The keyof the electrical system master switch must be inposition ON when the system must be operational.Turn the switch key into position OFF (same asmoving direction of machine) when the machine isparked at the end of the work shift, then extract thekey.In doing so, the eventual abuse by unauthorisedpersonnel is made more difficult.

21. BRAKE PEDAL

When the pedal is pressed, both track chains arebraked.

22. MONITOR PANEL

3550-M010

D350M0067

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Carefully read personal and machine SAFETY PRECAUTIONS (at the beginning of this manual)

ENGINE STARTING

OPERATING INSTRUCTIONSGENERAL INFORMATION

Before placing the machine in motion, be certain it hasbeen properly prepared for use and has been properlyserviced since the last operating period. Refer to thechapter "PRELIMINARY INSTRUCTIONS ANDBREAK-IN PERIOD" for detailed information.If repairs have been made during the last period ofinactivity of the machine, ensure that all bolts and nutsof the components involved are properly tightened andthat all necessary adjustments are made.

PRIOR TO STARTING (DAILY)

By reacting promptly as soon as troubles develop it ispossible to reduce maintenance costs and machinedowntime. Thus, it is recommended that, every day,prior to starting working or at the end of the day, a walk-around inspection is done, performing the followingoperations:- Remove dirt, mud, oil and snow from the machine;- Check if there are oil leakages.

Turn ON the ELECTRICAL MASTER SWITCHlocated inside the left side panel of the cab indicatedin the figure.

Open the left side panel.

Warn all people who may be servicing or workingaround the machine before starting.Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust gases.Observe all start-up procedures and WARNINGSlisted in this Manual.

WARNING

In case it is difficult to identify the cause of leak-age due to the presence of dirt, clean the compo-nent to be inspected.Start the engine to identify coolant or oil leakages.Oil leakages under pressure are dangerous sincehydraulic oil could penetrate under the skin.Do not try to locate leakages from the hydraulic sys-tem using bare hands. Use a piece of cardboard.

DANGER

- Check for eventual damaged hoses and pipes inthe hydraulic system.

- Check the engine oil level and the presence of con-taminants in the oil.

- Check fuel level in the tank.- Drain eventual water from the sedimentation filter.- Check the coolant level and the presence of dirt on

the radiator fins.- Check the engine air cleaner clogging indicator.- Check the operation of instruments and indicator

lights on the dashboard, lights, horn.

- Check the hydraulic oil level.- Check the torque converter/transmission oil level.- Check the operation of the throttle pedal, the colour

of exhaust fumes and the exhaust noise.- Check the ROPS cab, safety belt for eventual dam-

ages and the loosening of securing fixtures.- Prior to starting operating the machine, warm-up the

various components, without considering the sea-son.

- Do not operate the engine at high speed withoutload, especially when cold.

D350M0067

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3550

Monitor the instrument panel and the indicator lightsthat there are no troubles on the machine. Return theswitch into OFF. Eliminate eventual troublesidentifying the cause. Return the switch into "ON" thenmove the throttle lever half way.Press the engine starter switch key and turn it intoposition "START".Once the engine is started, release the key.

Secure the safety belt before placing the machine inmotion.

Adjusted it while seated.

Adjust and block the seat in the most convenient andcomfortable position.

Climb on the machine using only points wherehandrails and steps are provided.

Prior to climbing on the machine, clean and inspectsteps and handrails.

Climb and descend the machine facing it.

Kepp three contact points with handrails and steps.

Note - The three contact points can be two feet andone hand or two hands and one foot.

Do not climb or leave the machine while in motion.

Do not junp off the machine.

Do not attempt climbing or leaving a machine whiletransporting equipment or other materials.

When entering or leaving the operator's compartment,do not use any control as a grabbing point.

Make sure that the GEARSHIFTING and BLADECONTROL safety levers are in neutral position(raised).Insert the key into the starter switch, pressing itslightly and turn it clockwise into position "ON", fig.starter key.

Starter key

Motion direction

D350M0020

ACC.

OFF

H

ON START

D350M0072

D350M0087

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3550-M013

Always, before leaving the operator's seat and aftermaking sure all people are clear of the machine,slowly lower the attachments or tools flat to theground in a positive ground support position.Move eventual supplementary equipment toclosed and safe position.Return all controls to rest position.Place engine controls on cut-off position. Lock allcontrols and disconnect the starter switch.

STOPPING THE MACHINE

Never park on a slope without blocking accuratelythe machine to prevent any movement.

Every time the operation of the machine isinterrupted, for whatever reason, check that allcontrols are in neutral position and that theequipment control lever locking device is in lockposition.

WARNING

WARNING

Reduce the engine speed.Move the gearshifting control to neutral, pressingbutton N and engage the relevant safety lever intoneutral position A.

Do not keep the starter key in position START morethan 10 seconds at each attempt; otherwise, thestarter motor is damaged.Warm-up the engine for at least 5 minutes, withoutconsidering ambient conditions.

Notice - If the engine has been inoperative for a longtime or with low ambient temperature, increment even-tually, the circulation of fuel with a few strokes of theprimer pump.

Notice - Do not operate the starter motor for more than10 seconds.If necessary, wait for a few seconds to facilitate thecooling-off of the starter motor. Avoid pointless start-ing attempts, since there is the risk of exhausting thebatteries. Search for cause of failed starting.

Notice - The most frequent causes of starting failuremay be: presence of air in the fuel system, low batterycharge, defective operation of the starter motor orfaults in the electrical system.

Position A = neutralPosition B = operation position

Position A = neutralPosition B = operation position

Lower the equipment to the ground and engage theequipment safety lever into neutral position A.

N

D350M0088

D350M0085

B

A

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3550

If outdoor temperature is low, it could be difficultstarting the engine. It is appropriate to pre-heat theengine; please refer the relevant instructions at item 5(Starter switch).

Prior to leaving the machine, in case this is going to beunmanned, move the ELECTRICAL SYSTEMMASTER SWITCH into OFF and remove the key.

Before starting the machine, adjust and lock the seat formaximum comfort and control of the machine.

Inspect periodically the seat belt. No traces of fraying,wear or other weaknesses that could lead to failuremust be found.

OPERATOR'S SEAT ADJUSTMENT

The seat is provided with devices allowing theinclination and height of the cushion, the height andrake of the back rest and the controls reachdistance.

WARNING

STOPPING THE ENGINE

With engine at low idle, move the engine starter keyinto position OFF and remove the key.

WARNING - NOTICE

At the end of each operation period of the machine, donot cut-off the engine suddenly, but it is recommendedthat a cooling-off period variable from 3 to 5 minutes isobserved, prior to stopping the engine. A suddencutting-off of the engine with the turbine at hightemperature will result in a transfer of heat to the bearinghousing. Repeated hot cutting-off could damage theshaft bearings.

Starter key

Motion direction

D350M0021

ACC.

OFF

H

ON START

D350M0067

1850-M0134

1 - Height adjustment (mechanical).2 - Operator's weight correct setting indicator.3 - Backrest angle adjustment.4 - Front cushion 3-position angle setting.5 - Horizontal adjustment (sliderails).6 - Lumbar support adjustment, 5-position.

1 2

3

45

6

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T

E

L

M

Fuel filter cap

D350M0022

D350M0090

D350M0091

FUEL RESERVOIR

Extinguish all smoking materials and open flamesbefore checking and filling fuel reservoirs.Never refuel with engine in operation.Never use matches, cigarette lighters or torches asa source of light near flammables.

Always use fuel that has settled. When transferringfuel from the settling vessel to the machine reservoir,use a pump equipped with a filter, using the 24 Voltpower socket.It is recommended that the refuelling occurs at the endof each day's work; this will prevent condensationsduring overnight parking. Do not run-out of fuel; this willcause the entry of air into the fuel system withconsequent need for a bleeding operation.

DANGER

BLADE ADJUSTMENT

Angeldozer version

The blade tilt and pitch can be obtained by the upperadjustment rod of the right or left link. Otherwise, whenhe blade system is equipped with a hydraulic cylinder,the manoeuvre is done by it. To obtain larger angles forthe blade, lengthen or shorten adjusting rod L throughrod M. In this manner, the pitch angle is changed aswell.

Bulldozer version

In the bulldozer version, with a blade tilt controlcylinder on the right side, tighten or loosen sleeve Eusing bar T to move further.

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3550

D350M0051

To remove the cab from the machine, it is necessaryto proceed as follows:- sling the fuel tank using appropriate hooks inserted

into the lifting rings A provided;- the hooks must be attached to a hoist through

adequate cables or chains;- remove the screws indicated securing the tank to the

frame and disconnect the pipes;- lift the tank, using a hoist and rest it on an appropriate

surface to prevent damaging it.

- Disconnect the hoses of the brake system.- Disconnect the hoses of the hydraulic control valve

controls.- Disconnect the hoses of the cab air conditioner/

heating.- Disconnect the electric wires under the cab floor,

indicated in the figure.

D350M0053

D350M0052

A2

1

CAB REMOVAL

The removal of the cab is required to gain free accessto some main groups of the machine, needing repairinterventions, such as:- transmission pump 1- equipment/steering pump 2.

WARNING

Make sure that the cables are anchored to a pointstrong enough to support the load to be applied.keep all bystanders away from the anchoring pointof cables and chains.

WARNING

Avoid kinking chains or steel cables. Always wearprotective gloves to handle cables and chains.

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D350M0054

- Remove the screws of the four supports, two at thefront and two at the rear, securing the cab to theframe.

- Remove the screws of the right and left frontsupports under the right and left front mudguard, asindicated.

- Remove the screws of the right and left rear supportsreaching them from the rar side of the machine in thezone under the cab, as indicated.

REINSTALLATION OF THE CAB

To reinstall the cab, reverse the sequence used for theremoval, described here above.

1 D350M0118

D350M0119

- Lift the cab using a hoist.

- Sling the cab protection structure using lifting chainsor cables in the point indicated in the figure andattach them to a hoist.

- Remove securing screws 1, from the protectionstructure.

- Repeat the operation on the opposite side of themachine.

- Lift the structure and move it away from themachine.

WARNING

Make sure that the cables are anchored to a pointstrong enough to support the load to be applied.keep all bystanders away from the anchoring pointof cables and chains.

WARNING

Avoid kinking chains or steel cables. Always wearprotective gloves to handle cables and chains.

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3550

BRAKES DISENGAGEMENT

In the event the engine is inoperative and the machinemust be moved, it is necessary to manually disengagethe brakes, proceeding as follows:

Tooling required:- wrench, 19 mm and 22 mm;- allen wrench 8 mm;- hand pump (*P/N 75295017);- q.ty 2 brakes disengagement screw (*P/N

75301711)

Remove plug (7) using an Allen wrench and tightendisengagement screw (A, fig. B) complete with washerand locknut (C) on piston (S).

D350M0057

T

D350M0056

4,5 mm

S C A

Brakes appliedposition

B

Form the left side of the machine, open the rear panelto reach the diagnostic board, indicated in the figure.

D350M0120

D350M0164

WARNING

Brakes mechanically disengaged are inoperative.Prior to beginning the operations for thedisengagement of the brakes, implement all theprecautions required to block the machine.

4.5 mm

WARNING

Brakes are inoperative when manually released forservicing. Provisions must be made to maintaincontrol of the machine by blocking or other meansbefore starting the operation.

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Note - The hand pump must provide a delivery of atleast 100 cm3 per stroke and a head of at least 20 bar.

Connect a hand pump (*75295017) to the brake portindicated in the figure and actuate it untildisengagement screw (A, fig. E) protrudes, indicatingthat piston (S) is unlocked (about 4.5 mm).

D350M0058

S C A

Brakes disengaged position

E

(*) For special tools, please contact your AuthorisedService Centre.

Tighten locknut (C fig. F) until it contacts the face ofthe transmission housing to prevent piston (S) fromreturning in. In this position, the machine is free frombraking on one side only.Repeat the operations from 2 through 4 on the oppositeside.

S C A

Brakes disengaged position

- Release the pressure of the pump. In this positionthe machine is free and it is ready to be moved.

FD350M0166

D350M0165

4.5 mm

4.5 mm

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3550

TOWING THE MACHINE

Prior to the towing, make sure that the cable or thetowing bar are in good conditions and are strongenough for the towing. Use a cable or a towing barhaving a capacity of at least 1.5 times the gross massof the pulling machine, in the event a disabled machinestuck in mud must be recovered or must be towed ona slope.When towing, connect the towing cable to theprescribed points on the fame only, if installed.These towing instructions are intended to move amachine incapable of moving on its own a shortdistance at slow speed. Pull the machine at a speedof 2 kmph (1.25 mph) or lower toward a place suitablefor the repair operation.Always transport the machine, if a longer distancehaulage becomes necessary.Do not use chains for towing. A link of the chain couldsnap, causing personal injuries. Use a steel cable witheyes at the ends. Place a flagman in a safe position tostop the towing operation in the event the cable startsbreaking or fraying. Stop towing every time the pullingunit moves without moving the machine on-tow.Keep the angle of the towing cable at a minimum.Do not exceed a deviation angle of 30 ° from a straightposition.A sudden movement of the machine could overloadthe cable or the towing bar. causing its failure. Forbetter working conditions, move gradually andsmoothly.Normally, the towing machine must have the samecharacteristics of the machine on-tow. Check that thetowing machine has a sufficient mass and power,capable of controlling both machines in relation to theslope and distance to be travelled.To allow a sufficient control and braking, when movinga machine down a slope, it could be necessary a largermachine or connecting other machines to the rear part,to avoid uncontrolled movements.It is not possible to provide instructions for differentsituations. The minimum capacity of the towingmachine is sufficient for flat surfaces whereas themaximum one is required on gradients or rough terrain.

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MOVING THE MACHINE WITH OUTSIDE MEANS Weight of the machinewith HSU blade .................... 35,900 kg (79,150 lbs)with HSU blade + ripper ....... 39,100 kg (86,200 lbs)with HA blade ....................... 34,110 kg (75,200 lbs)with HA blade + Ripper ......... 37,311 kg (82,260 lbs)

Max. 580 kN

D350M0128

D350M0129

Max. 485 kN

D350M0167

D350M0168

Towing and recovering the machine

Should the engine fail to start or when the machinemust be towed, it is necessary to disengage manuallythe brakes, as described in chapter "TOWING THEMACHINE" of the Instruction Manual.For this operation, use equipment or vehiclesappropriate for this purpose.When using cables for towing or recovery, make surethat all parts are in good conditions and are free fromdefects or troubles.Avoid kinking or bending chains; do not pull unless thisconditions are eliminated, since they could causefailures and backlashes.The maximum allowable load on the rear towing hookis 580 kN (only for machine excluding an eventualripper).

The maximum allowable load on the front hook is 485kN.

Cables and chains must be firmly secured; make surethat they are attached to a point strong enough inrelation to the effort to be made, which, in any case,must not exceed the maximum allowed value for thetowing hook involved.

Lifting

The same recommendations seen in the precedingpoint for the use of cables and chains apply.Always handle tractor and equipment separately.

For the tractor, a slinging as illustrated in the figure isrecommended.

For the front equipment it is recommended that the twoend eyes of the blade and the tips of the blade arehooked, as illustrated in the figure.

Prior to lifting, check that:- the parking brake is applied;- all cab doors, panels and mobile parts are secured;- all actuating cylinders are secured by the

appropriate pins.

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3550

D350M0059

INSTRUCTIONS FOR LOWERING THEEQUIPMENT TO THE GROUND WITH ENGINEINOPERATIVE

Obey all procedures and WARNINGS relative to theinstructions for STOPPING THE MACHINE andCUTTING-OFF THE ENGINE listed in this Manual.The equipment can be lowered with appropriatemovements of the control levers, with enginerunning or inoperative.

Move slowly FORWARD the specific control lever(blade or ripper) causing the lowering of the equipmentinvolved; grade the lowering speed, with particularcare, towards the final tract of the descent, beforetouching the ground.When the blade is firmly bearing on the ground, movethe lever alternatively FORE and BACK to stroke-end,a couple of times.With this manoeuvres the equipment is bearing firmlyon the ground and the residual pressures in thehydraulic system are released as well.

TRANSPORTING THE MACHINE

When moving the machine on vehicles requiring theremoval of the blade, secure the cylinders to theblocking plate inserting the appropriate welded pin onthe plate shown into the holes of cylinders, then lockwith a retaining nut.

WARNING

Loading

Before proceeding with the loading operation, makesure the ramps and carrier platform are lined withsuitable non-skid material (wood, rubber etc.) securelyfixed to the above parts (avoid using wood planks, oldtyres etc.). Proceed as follows:- apply the trailer and tractor parking brakes;- lower the rear stabilisers of the trailer;- align the machine tracks properly with the ramps for

a correct climbing;- seek the help of a flagman standing in a position from

which he can easily keep in sight the ramps, loadingplatform, machine and operator;

- raise the equipment from the ground only as high aswill not interfere with the loading operation,

- climb up very slowly keeping the blade or frameclose to the trailer platform; do not steer or changedirection on the ramps;

- position the machine on the platform so as to ensurean optimised load distribution with soft manoeuvres,avoiding sudden starts or stops;

- lower the equipment, apply the parking brake andfollow the entire procedure recommended forstopping and leaving the machine.

Transportation

Before moving off, it is necessary to perform thefollowing operations:- apply and bolt, wooden chocks to platform, at the

ends of the track chains; safety links or chains onthe sides and along the machine to avoidmovements during the transport;

- check that cab door panels and other mobile port arecorrectly closed;

- apply the signals prescribed by road trafficregulations in the event the dimensions of themachine exceed admissible values.

Unloading

The operations and precautions to be followed duringthe unloading phase are practically similar to thoseapplicable for the loading phase. During the descent itis necessary to keep the equipment as near the groundas practical to prevent slipping or wavering of themachin.

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To recharge the batteries, a slow charge ispreferable.Should booster batteries be used, remember toconnect both ends of the booster cables in theproper manner (+) with (+) and (-) with (-). Avoidshort-circuits of the terminals.

WARNING

LONG STORAGE OF THE MACHINE

If the unit is going to be inoperative for a long time, comply with the following rules:- Clean the machine completely and lubricate all components equipped with grease fittings.- Drain the water from the cooling system. If the system is filled with an antifreeze mixture, this operation is not

necessary.- To avoid rusting, it is necessary to refill completely the fuel reservoir.- Remove the injectors and inject, through the injector holes, some engine oil (the operation should be performed

using a syringe, after moving each piston to B.D.C.).- After injecting the oil, crank the engine a few turns using the starter motor, so as to spread a protective film of

oil on the sleeve walls. Then reinstall the injectors.- If possible, store the batteries in a place where there is no danger of freezing. Recharge them monthly.

Place the machine in a protected place or cover it witha tarpaulin.To ensure an adequate protection of the transmissioncomponents, at least once a month, the engine shouldbe moved for short distances, so that a film of oil isrenewed on the parts.

Remove the radiator cap only after the engine hassufficiently cooled-off. With engine inoperative,turn the cap slowly so that residual pressure isreleased before removing it completely.

The use of CASE is recommended. Please find in thetable below the percentages of the mixture related toambient temperatures:

AMBIENT ANTIFREEZE WATERTEMPERATURES

Down to:

- 18° C (17.6° F) 20 % 80 %- 15° C (5° F).11 30 % 70 %- 25° C (-13° F)1. 40 % 60 %- 35° C (-31° F)1. 50 % 50 %

WARNING

COLD CLIMATE PRECAUTIONS

When ambient temperatures are near 0 °C (32 °F) make sure that the cooling system is filled with an antifreezemixture, to prevent the danger of freezing., otherwise, replace the water in the system with such a mixture.Flush the cooling system before adding the antifreeze mixture. Use appropriate specific products for this operation,following the instructions on the container.

Run the engine for some time after adding the fluid, toobtain a correct mixing.

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust gases.

Also, use lube oils with a proper viscosity fortemperature conditions, as indicated in the lubecapacity.

WARNING

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3550

D350M0067

STARTING THE MACHINE AT LOW TEMPERATURES

The engine starts regularly with temperatures down to - 15 °C (5 °F), coolant at 50 % in the cooling system, engineoil SAE 10W-30 and fully efficient batteries.

STARTING THE MACHINE WITH BOOSTER BATTERIES

In the event the batteries are partially exhausted, it ispossible to start the engine using booster batteries.The batteries are easily accessible from the left sideof the machine, after removing the panel indicated.Proceed as follows:- Connect the exhausted batteries to the booster

batteries or to the batteries of another machine;

- Switch on the electrical system master switch.- Start normally the engine with the engine starter

switch (posit. start).- Once the engine has started, remove the jumper

cables form the machine.

Should booster batteries be used, remember toconnect both ends of the booster cables in theproper manner (+) with (+) and (-) with (-). Avoidshort-circuits of the terminals.

WARNING

Note - Do not start the engine without batteries, sincethere is the possibility of damaging the electronicsequipping the machine.

Temperature Activation of engine Fuel Engine oil Antifreeze°C (°F) pre-heating 50%

> 0 °C (32 °F) No STD 15W-40 20%

0 to 14 °C (32 °F to 7 °F) No Artic fuel 15W-40 30%

-15 to -24 °C (5 °F to -13 °F) Yes, for 20 s Artic fuel 10W-30 40%

< -24 °C (-13 °F) Yes, for 30 s Artic fuel 10W-30 (*) 50%

(*) For temperatures below -24 °C (-13 °F) a pre-heating device of the sump oil is available (optional).

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MACHINE OPERATION

PRACTICAL OPERATION TIPS

It is good practice, when the operator first gets on themachine, to familiarise with its controls.The operator must perform all the operations theequipment is capable of doing, to develop sufficient"feeling" with the controls and their reaction.

Remember that, when the control levers are in neutralposition, the equipment is solid with the machine: thismeans that it will follow along any movement of themachine.

Never attempt to operate the machine or itsequipment from any position other than seated in theoperator's seat. In all circumstance, keep head, body,limbs, feet, hands and fingers within the operator'scompartment to minimise the possibility ofexposure to eventual external dangers.

Keep all equipment low or in a position ensuringmaximum visibility and the control of the machine.

Never use the equipment as a platform to liftpersonnel nor to carry riders on the machine.

When pulling or towing through a cable or chain, donot start suddenly at full throttle; take-up slackcarefully.

Use only designated anchoring points when pullingor towing. Take extreme care when hooking. Makesure that pins and locks are properly secured beforepulling.

Keep exposed personnel clear of the equipment (orsupplementary attachments) when raised, to avoidpossible injuries.

NEVER COAST the machine down grades andslopes with the transmission in neutral orneutralised.

Explore the working area to identify potential riskssuch as: slopes, overhangs, pits, demolition rubble,fires, ravines, ditches, soft terrain, heavy traffic,crowded parking areas, closed ambients. In suchconditions, proceed with extreme care.

Working on slopes is dangerous.

Pay special attentions when working near over-hangs.

Always designate a flagman when visibility ofthe working place, by the operator, is limited.The flagman must be capable of communicatingdirectly with the operator and the latter mustobey the signals.

Be aware of falling walls, falling objects andlandslides. Always remember that these dangerscould be concealed by brushes, undergrowth etc.When working in ditches or near highembankments, make sure that the walls areadequately supported, so as to prevent landslides.

Before working in the vicinity of gas lines or otherutility lines always contact the nearest utility officebefore beginning work.You and the utility representative must jointlydetermine what specific precautions must be takento insure safety.

Work in proximity of overhead or undergroundpower lines involves serious body injuries and deathhazards, thus special precautions must be takenaccording to national and local safety regulations.For the purposes of this Manual you areconsidered to be working in the proximity ofpower lines when the attachment or the loadraised by machine, in any position, can reach towithin the minimum distances specified bylocal and national safety regulations.

Slow down working speeds. Reaction times couldbe too slow and distances could be erroneouslyevaluated.

WARNING

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3550

DozingWhen working on grades, it is best to move downhill forbetter traction. Gradually lower the blade at thebeginning of each pass and accelerate the engine fully.The dozing depth should be such as to allow a loadwithin a short distance (5-6 m /15-18 ft); the full loadshould, then, just be pushed to the unloading area.When the ground is hard, getting a full load in a shortdistance becomes difficult. Under these conditions,instead of pushing a half empty blade towards theunloading area, it is better to return to the starting pointand doze more. The load of the second pass is addedto the first one and will result in more effective dozing,especially when the unloading distance isconsiderable.Working is often made more difficult when large rocksare present and are caught under the blade and pushedforward or lifting the front of the machine, makinguneven cuts. This humped effect can be avoided bybacking-up with the blade at a lower depth capable ofdislodging the rock. If necessary, operate with themoldboard corner tilted.When dozing in hard terrain and the blade is unable tocut the material, it is advisable to increase themoldboard's draft.Under these conditions the angle is good for the initialcutting, but during continued dozing the moldboard willpick-up more resistance as the load will push the bladeupward. Also, a high pitch reduces the rolling of thematerial on the blade, increasing the resistance. Inhard and rough dozing, the operation might be easierif the blade is tilted; if the work to done is over aconsiderable area, first use the ripper to break-up thesoil.

Blade pitchA. Loose soil.B. Hard soil.

243

BA

Road and ditch cuttingWhen cutting steep slopes (for roads or ditches)dozing should begin by cutting the depth of the ditchand tilting the blade to cut the sides with the desiredangle.Care must be taken in monitoring that the profile of theslope is regular, as any correction would be mostdifficult or, in some cases, even impossible.

Pushing loadsWhen pushing materials have the tendency to spill outthe sides of the blade. This problem can be reduced byworking repeatedly, when possible, following thesame path on successive trips so that the spillsforming windrows on both sides prevent a further lossof material from the blade. When pushing loads on alevel terrain, keep the blade just touching the groundor at a depth deep enough to skim the surface.However, if the terrain is uneven it is appropriate to cuta little deeper to compensate the dirt which falls out thesides or in the hollows.

Pushing loadson turns

254

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Steering

The D350 Power Steering solves the steeringdifficulties during the pushing phases of the materials,since it provides constant power to both track chainsunder all conditions, steering the machine in a naturalmanner.Consequently, the traction is increased and an easiermanoeuvre by the operator and a smoother groundcondition (not ruined by the locking of the trackchains).

Pushing loads while steering

Spreading

When spreading materials, hold the blade slightlyabove the ground, so that it can slide under the cuttingedge, creating an even layer.If the layer to be spread is of a considerable height, letthe blade rest at a height just above the desired layer,since the compactation occurring later will lower thelayer, especially when loose materials are involved.

Grading

After the ground has been dozed, the surface might berough due to small windrows, ground lifted by thetracks or small piles left around turning points. Theseterrain irregularities must be smoothed over byoperating the dozer in reverse and leaving the bladefloating. Under these conditions, the blade operates asa harrow, topping off high spots and filling voids,without altering the level.Grading is often made difficult, and sometimesimpossible, because of boulders or other debris, whichhave to be removed first.

D350M0169

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3550

Moving large rocks and boulders

It could become necessary to move boulders with thedozer, during all kinds of works. There are severalprocedures. In fact a fully loaded blade may be usedor the boulder can be pushed directly by the blade bythe forward or reverse action of the machine.The choice of procedures used depends upon severalfactors: the dimensions and shape of the boulder,space available, type of work being performed. Withtractor in forward and fully loaded blade the boulder canbe moved by glancing it off the load; in this manner the

rock will roll-off to the nearest side of the machine.Repeating this type of manoeuvre will eventually edgethe boulder from the working area.The same result can be obtained by manoeuvring inreverse. In such a case, turn the machine so that theside of the blade contacts the boulder, then disengagethe steering clutch on the machine's opposite side andlock that side's brake. The dozer will steer, pivoting onthe track being braked, while the blade pushes the rockbackward and sideways.

Moving boulders with full blade

Moving boulders with full blade249

D350M0170

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Piling

To pile materials, two well accepted methods arerecommended:Form a pile of material on the first pass, then, withsuccessive passes, accumulate material in front ofthe established pile.After forming an initial pile on the first pass pushmaterial on successive passes to the top of theestablished pile and make it fall over the opposite side.Sometimes, instead of piling it, the material is pushedto fill a ditch. In this case, since the filling materialtends to let the machine sink it is appropriate to builda small step before reaching the edge of the ditch,raising slightly the blade.This step improves safety since, proceeding withsubsequent passes, the front of the tracks shall allow,in steps, to protrude over the original edge.

Piling Cutting a pile with side cuts

253251

BA

Pile levelling

If the pile is not too bulky or hard, it can be levelled bydozing the blade into it, than it can be spread or re-piledsomewhere else.If the pile is too large or too hard to be spread with asingle pass, or it must be spread in different directions,the first pass may be made grading one side to groundlevel, repeating the cuts, as required from differentangles, on the remaining pile. If the dozing leaves highwalls which could fall on the machine, turn the bladefrom time to time toward the wall and with it raised,push the mound down.If the dozer is unable to cut a pile because of its steepsides, a ramp can be built by pushing into one side withthe blade raised and then backblading with a downpressure.The levelling of a pile can also be made by dozing acentre slot and continually cut away the top. Thismethod is always recommended when the pile isexcessively high and it is the only possible when thereno access to the side of the pile.The centre slot with must be quite greater than thewidth of the blade, thus allowing a protective border tobe built preventing the dozer from getting trapped,once the digging reaches a certain depth or bouldersand earth or the walls collapse on the machine.Also, a narrow cut does not allow the machine toproperly manoeuvre and dispose of rocks or rootsencountered while dozing.

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CUTTING A PILE WITHCENTRE SLOT

CENTRE SLOT DOZING OF PILE

Hill workDozing on side slopes requires special care. Evenwhen the dozer appears to have sufficient margin ofsafety, the sudden running over an unseen obstacle bythe upper track or the lower track moving into a hollow,the machine could tip over.Chances of this occurring are lessened when themachine is dozing as it is moving along using the loadas an additional stabiliser. Also, the machine isstabilised by the low windrow.Dozing on frozen slopes is hazardous as the grousersact as skates causing the machine to slideuncontrolled downhill. There is a danger of tipping overrocky slopes as well, especially shale with bedsparallel to the surface and on soft fills where the lowertrack sinks deeper than the upper one.If the machine starts to slowly roll over, sometimes itis possible to prevent the trouble by quickly turningdownhill, lowering the blade at the same time.Slopes too steep to be safely worked sideways,sometimes, may, be dozed by operating the machinealong it diagonally.

Going over obstaclesAny obstacle (logs, roots, ridges etc.) must beremoved, if possible, or avoided. If this is impossible,crossing must be done very slowly and at an angle sothat one track will reach the top and starts to descendon the other side, while the track is still climbing. Thismethod of operation slows down the dropping anddecreases the shock against the ground, which couldcause damages to the machine and the operator.If the obstacle is made of soft material it is goodpractice to sharply turn the machine while crossing, sothat the track edges will help cut the material down.When the dozer is operating in heavy work, the tracksoften spin, forming small pile of earth near their rearend. Under these circumstances, when reversingdirection, it is good practice to move sideways asmuch as required, to avoid the tracks hitting thesewindrows.A ditch may be crossed without danger only if its widthis not greater than 1/3 the track length and if the trackmovement will not collapse the banks. To prevent thelatter from occurring, move the machine over woodenplanks, even if not very strong.

D350M0069

D350M0171

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Notching a shelf on side slopes, travelling and unloadingdownhill.

Notching a shelf on side slopes, travelling across theslope, steering and unloading downhill.

252

On the other hand, the machine overcomes safelysteep slopes downhill. Steering is apt to be tricky onsteep slopes, whether up or down, because when onesteering clutch is released, the track on that side slipsand turns faster and the machine pulls to this sideunder gravity and might place itself transversally of thegrade with the consequent danger of tipping over.Digging and pushing should be done downhill to obtaina better pushing effort. This is particularly advanta-geous when the ground is very tough, even if the soilmust be pushed up the hill. When digging is limited toa given area on the slope and material must then bepushed downhill, it is a good technique to drop to orthree loads at the end of the cut, then pushing most ofthe pile down in a single pass.

A

B

D350M0070

Grading on side slopes

If a slope must be notched (i.g. road cuts in hillsides)it will be necessary to first build a shelf. Set the bladein tilt position opposite to the slope so the dirt movedwill slide downhill and help in building up the shelf. If theslope is too steep to work effectively with tilted blade,proceed in one of the following ways:Push the material downhill to form a shelf as in (A), sothe dozer can start level cuttings, as in (B).Start cut transversally to the slope, then turn at thesame time to unload downhill. This will provide a morelevel shelf, which can than be enlarged or graded off asrequired.Dig a strip transversally to the slope, then proceed witha series of parallel cuts, always operating the highertrack in the previous strip.In each case the best possible advantage should betaken with the soil configuration. When natural aids arenot available, the machine can be moved onto boardsor other lifts to start the cut at the desired slope.

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3550

Dozing a shelf on side slopes by successive cutsacross the slope.

Clearing

In land clearing of brush and small trees, clearing canbe accomplished in one pass, with the blade cuttingslightly below the ground. This will allow the blade toshear the roots. It may be necessary to back upoccasionally to clear the roots from the cutting edge.Roots under the edge cause the blade to ride up andwaste machine power.When uprooting a tree, first place the blade fully raisedagainst the trunk, then engage first gear forward andpush with the engine fully accelerated. If the treeresists, shift the transmission to neutral then into firstforward again; repeat a few times. If the tree does notfall quickly, make a few passes to cut some of theoutlaying root structure. To improve the pushing,build-up an earth ramp opposite the direction the treeis to be felled, so that the blade can touch the tree ina higher position. Remember, when the tree begins tofall, to back-up rapidly, so that the uplifting roots willnot catch under and tilt over the machine.

D350M0172

To get smooth cuts, (meaning regular surfaces) theoperator should closely watch the ground pattern andwhen the machine noses down or up, he must reactswiftly with the control lever to raise or lower the blade,as required.

OPERATING TIPS

Before beginning to doze, the moldboard should haveproper tilt and pitch for the work to be done. Whiledozing, always use a speed adequate to obtain bestresults from the machine.

RIPPER

The ripper is supplied as an optional.To raise or lower the ripper, move the control leverbackward or forward, respectively. To stop the ripperin the desired position, release the control lever whichwill return to hold position in neutral.The ripper is equipped with shanks/teeth removablefrom the relevant frame, as required. Thus it ispossible to work with all the teeth or, in particularlyheavy conditions, with the central one only.

Engage FIRST gear for all ripping operations. Usemore shanks rather than increasing travel speed.

To obtain the best results, the following considerationsshould be kept in mind:

Breakage. The soil can be broken in fine or coarsepieces, as required. It depends on work depth, numberand shape of the shanks and pass spacing.Breakage must be established on the basis of thesubsequent use of the ripped material. As an example,if the material must be spread and back bladed, a finerbreakage is required than when it must be dozed away.

Note - Keep the cutting edges in good conditions.

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D350M0023

D350M0173

Work depth. It is good practice to work to maximumdepth permitted by the available power and traction ofthe machine, taking into account the breakagedesired.Note that:

- With strongly cohesive materials, such as clay, tuff,marl, gypsum, sandstone, calcite and othercompact soils, the greater the depth the coarser thebreakage;

- With stratified materials, such as limestone, schist,gneiss, travertine etc., the greater the depth the finerthe breakage.

Number and shape of teeth. The number of teethdepends on the power required of the machine inrelation to the desired breakage. Generally, the greaterthe number of teeth, the finer is the breakage.Exceptions are stratified materials where large slabsare lifted when working with more than one tooth.As regard tooth shape, the partially curved type can beconsidered a universal standard. Curved teethfacilitate the lifting and to some extent, also the turningover of the material.

Spacing between passes. It must be such as tocomplete the breakage of the previous pass, always inrelation to the desired fineness. Generally, spacingmust be less than work depth.In plastic soils, e.g. gypsum (in which the implementmakes just a cut) or in hard soil (in which the workingdepth must be reduced) criss-cross passes may berequired.

Speed and direction. It is good practice not to exceed1.5 to 2 km/h (1 to 1.2 mph) to prevent harmful shocksto the implement and excessive wear. When workingon soft material, it is preferable to increase the depthrather than the speed. In the case of stratifiedmaterials, work crosswise and against the vein; on thecontrary, if the material is landslipping. work in thedirection of the landslide.

Material heaping. Generally it is convenient to heapmaterial crosswise to the ripping direction in order tokeep the transport distance to a minimum and tosmooth out any irregularity.

When not in use, always carry the ripper in fullraise position during operation and lowered to theground when parked.

To make sharp turns, raise the ripper teeth off theground, to prevent damages. Only wide turns orsmall directional corrections are permissiblewhen the ripper is sunk-in.With surfaces with deep depressions, first makepasses to level the ground, prior to ripping, toavoid breaking the shanks.

WARNING

WARNING

Notice - Do not reverse or steer while the teeth are intothe ground. Torsional forces could breake the teeth.

Notice - The shank must always be positioned asindicated in the figure during transportation.

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3550

CAB

SAFETY CAB

Safety cab with roll-over protection structure (ROPS)and against falling objects (FOPS) safegarding theoperator.The cab has two doors which can be open 90° (to beused only to enter the cab) assisted by gas filledcylinders and two hinged side panels, with lock inmaximum open position, providing enough ventilationand reducing the inlet of dust. It is amply glazed andprovides maximum operator comfort under whateverclimatic condition.

The protection offered by ROPS may be prejudicedby any damage or structural change.Inspect your seat belt periodically for signs offraying, wear or other weaknesses leading tofailure.

DOOR

The door is open by the handle indicated in the figure,after opening its locks (incorporated in the handleitself) with the appropriate key.

Note - The key provided with the machine is universal,i.e. it operates the cab door locks, the side panels andthe engine starting switch.

WARNING

Mount and dismount the machine only in the pointswhere steps and/or handrails are available.

Before mounting the machine clean and inspect stepsand handrails.

Mount and dismount the machine facing it.Keep three contact points with handrails and steps.

Note - Three contact points can be two feet and onehand or two hands and one foot.

Do not climb or leave a machine while in motion.Do not jump off the machine.

Do not climb nor leave the machine while transportingequipment or other materials.

When climbing or leaving the operator's compartment,do not use any control as a grabbing point.

D350M0072

D350M0092

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REAR WINDOW

If replacement of glass is necessary, be sure to usesafety glass as spare.Do not strike the glass to remove it from cab parts.Glass may shatter and cause personal injuries.

Note - Windows must always be kept clean to ensuregood visibility.

It is recommended to use specific window cleanersand dust free cloth to avoid scratching the glass andimpair transparency.

It is possible to keep the side doors open while themachine is operating.

WARNING

To open from inside, rotate the handle as indicated inthe figure.

To free the sliding of the window, actuate the lockingdevice, pressing button A to full stroke.

To open the door form inside the cab, press the handlebutton indicated in the figure.

D350M0024

D350M0026

AD350M0025

D350M0174

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CAB LIGHTING

The ceiling lights are located on the top of the cab.Switch M in raised position activates fixed light L, inlowered position it actuates movable light P.In central position both lights are OFF.

CAB INSIDE HEATING AND VENTILATION

By turning knob A air taken from the outside or frominside the cab (recirculation) is pushed into the cab.Place knob A on recirculation when a quick heating ofthe cab is required.Setting knob B adjusts the air temperature in the cab.Turning knob C the fan is activated and its speed isadjusted.

LP

A. Air recirculation adjustment - B. Temperature set-ting - C. Demisting fan - D. Air conditioner (uponrequest).

12 VOLT SUPPLEMENTARY RECEPTACLE(On cab only)

Supplementary power receptacle P, located in the rearleft part of the cab, can be used to power an eventualrefrigerator to be located in the compartment behindthe seat or to power a portable phone.

Phone holder (T) to be used to store a portable phone,during battery charging phase as well.

Demisting and defrosting

For a fast demisting or defrosting of the front, side andrear windows, proceed as follows:- set fan to top speed with switch C;- move knob B to stroke-end (clockwise).Suitably adjust directional outlets in the cab, directingthe hot air to the windows.

M

PT

C

B

C D

A B

D350M0093

D350M0095

D350M0094

D350M0175

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WIPER

Should visibility be unsatisfactory as a result of faultywiper blade operation, clean rubber blades using aspecific detergent or alcohol. Should faulty operationpersist, change the blades.For the front wiper proceed as follows:- tilt out complete arm C from glass;- loosen screws D and remove the blade.

If the spray pattern of nozzles S is defective, clean theholes with a needle.If necessary, re-adjust the spray nozzle orientation sothat the fluid will strike the windshield uniformly.

Note - Always keep windows clean to ensure goodvisibility.It is recommended to use specific window cleanersand dust free cloth to avoid scratching the glass andimpair transparency.

Check and top-up as required, the level of thewindshield washer fluid in its reservoir, reached byopening the rear left panel in the battery compartment.

Note - Use DP1 detergent diluted with water, in relationto ambient temperatures. A 50/50 mixture of detergentand water is not freezing down to -10 °C (15 °F). Belowthis temperature, use pure detergent only.

C

To replace the side and rear window blades, proceedas for the front wiper.

S

D

AIR CONDITIONER (optional)

The air conditioner is turned On by switch D.To adjust the cooling or heating inside the cab setlever B as described for the machine without airconditioner.

Note - The air conditioner is inoperative when theengine is not running, since it is driven by the engine.Make sure air conditioner switch D is OFF beforestarting the engine.Always cut-off the air conditioner with switch D beforestopping the engine.Keep doors and windows closed to obtain a correct airconditioning of the cab.It is recommended to avoid attempting repairs on theair conditioning system by unskilled personnel.

D350M0097

D350M0096

D350M0098

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3550

MAINTENANCE

Do not allow unauthorised personnel to performany maintenance operation. Study carefully thisManual before starting, operating, maintaining,fuelling or servicing the machine.

Never perform lubrication, repair or adjustingoperations with engine running, except asspecifically called for in this Manual, to avoidbeing caught by moving parts or being crushedby the machine.

Follow the instructions of chapters "Stoppingthe machine" and "Stopping the engine" of theOperation and Maintenance Instruction Manual,before lubricating or performing any otherintervention.

Always lower the equipment to the ground andrelease pressure from all systems prior toproceeding with any maintenance or repairwork.

The equipment and attachments can be loweredby moving the control lever with engine runningor inoperative.

Every time components and groups of themachine must be removed, be sure the jackingpoint used on the machine is appropriate for theload to be applied. Be sure the support of thejack at the machine and under jack isappropriate and stable. Transfer load toappropriate blocking as a safety measure,before proceeding with service or maintenancework.

Never work over or under a machine or itscomponents being supported only by jacks orother lifting devices, in accordance with currentnational and/or local regulations.

Never work under or near the equipment of amachine or its components nit adequatelysupported and blocked.

Always place the safety lever in lock position.

Always place the starter switch in lock positionprior to perform cleaning, repair or any otherintervention on the machine and after parking it,to prevent personal injuries.

Never use gasoline, solvent or other flammablefluid to clean parts. Use exclusively qualified,non-flammable, non-toxic commercialsolvents.

DO NOT USE HANDS to search for suspectedpressure leaks. Fluid escaping under pressurend can have sufficient force to penetrate the skin.Use a piece of cardboard or wood

When servicing or maintenance require accessto areas that cannot be reached from the ground,use a ladder or step platform that meet local andnational regulations, to reach the service point.If such ladder or platform are not available, usethe machine hand holds and steps as provided.Perform all service or maintenance carefully.

Use only grounded auxiliary equipment topower heaters, battery charges, pumps orsimilar equipment, to reduce the risk ofelectrocution.Warn all personnel which could be performingrepairs or in the vicinity of the machine prior tostarting the engine.Keep hands, limbs and face away from loosenconnections of pipes when performingefficiency or leakage tests of injectors orsystems. Also, wear prptective glasses with sideshields.

NEVER ALIGN HOLES WITH FINGERS ORHANDS; always use appropriate aligning tools.

Do not use an open flame as a light source tolook for leaks or for inspection anywhere on themachine, due to the presence of flammablefluids.

MAINTENANCE SAFETY WARNINGS

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The service intervals indicated herein refer to normaloperating conditions; during the initial break-in periodand under particularly severe conditions, other intervalsmay be needed.Use this list to co-ordinate maintenance scheduled atthe same intervals.Before proceeding with any service operation, lower theequipment to the ground and shut-off the engine.It is advisable to change oil immediately after stoppingthe machine as warm oil will drain out more easily, alongwith any suspended deposit or scale.Before and after lubrication operations, accurately cleanall fittings, covers, plugs to prevent dirt from entering thesystem.

M

A

IL

H

G

F

E

D

CB

WALK AROUND INSPECTION (to be performed daily)

By quickly responding to initial troubles, requiredmaintenance and downtime will be reduced. It isrecommended to check the machine each day, beforebeginning work or to make a walk around inspection atthe completion of each day to check:

A. Side final drive oil leakagesB. Ineffective or broken instrumentsC. Engine oil/coolant leakages

D. Hydraulic system leaks and damaged hosesE. Caked dirt on radiator grillF. Blade wear or damageH. Track rollers and idler wheel oil leakagesI. Track tensioner grease leakagesL. Caked dirt and mud on track framesM. Loosen track shoe fastenersO. Safety devices, steps and hand grabs in perfect

working conditions.

Lubrication is an essential part of preventivemaintenance, controlling to a great extent, the useful lifeof the unit. Different components require differentlubricants, and some components in the unit requiremore frequent lubrication than others. It is important thatthe instructions regarding types of lubricant, and thefrequency of their application, be followed. periodiclubrication of moving parts reduces to a minimum, theprobability of mechanical failures.

Note - Do not tamper with the fuel injection equipmentsetting, otherwise the Manufacturer will void all war-ranties.

MAINTENANCE OPERATIONS

D350M0001

O

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3550

- Double head wrench mm 24 + mm 27

- Double head wrench mm 19 + mm 22

- Double head wrench mm 13 + mm 17

- Double head wrench mm 12 + mm 14

- Double head wrench mm 8 + mm 10

- Allen wrench mm 12

- Allen wrench mm 10

- Allen wrench mm 8

- Universal pliers

- Hammer 0.5 kg

- Flat screwdriver

- Phillips screwdriver

- Grease gun with hose extension

- Oil and grease gun

Complying with standard ISO 4510.

LIST OF ON-BOARD TOOLS

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EVERY 10 HOURS WORK (DAILY)

1 Engine oil: check oil level

2 Torque converter/transmission hydrauliccircuit: check oil level

3 Radiator: check coolant level

EVERY 50 HOURS WORK

4 Equipment hydraulic system: check oil level

5 Fuel tank: draining condensation

6 Blade cylinder articulations: greasearticulations

7 Ripper and front equipment linkages: greaselinkages

8 Cab ventilation air filter: clean filter

9 Bevel gear set/brakes: check oil level

AS REQUIRED

35 Engine air cleaner clogged: clean cartridges

36 Oil filter on equipment hydraulic circuitreturn: replace filtering cartridge

37 Fuel filters: draining condensation

EVERY 2000 HOURS WORK

34 Equipment hydraulic circuit: change oil

(1) These service intervals must be performed at 100 hours if the sulphur content exceeds 0.5%.

MAINTENANCE TABLE

OTHER OPERATIONSTO BE PERFORMED AS REQUIRED

38 Undercarriage: checking the sagging of thetrack chains

EVERY 1000 HOURS WORK

21 Fuel filters: replace filters

22 Bevel gear set/brakes: change oil and suctionfilter

23 Torque converter/transmission hydrauliccircuit: change oil

24 Propeller shaft: grease

25 Batteries: check level of electrolyte

26 Final drives: change oil

27 Air cleaner: replace cartridges

28 Transmission/torque converter suctionfilter: clean filter

29 Transmission/torque converter breather:replace

30 Bevel gear set/brakes breather: replace

31 Fuel injectors-engine valves: check calibra-tion of injectors

32 verificare la taratura degli iniettori

33 Engine breather: clean

-

EVERY 250 HOURS WORK

10 Final drives: check oil level

11 Engine oil: change oil (1)

12 Idler: lubricate

13 Fan-alternator-water pump: check conditionsand sagging of belt

14 Track frame pivot shaft: grease articulations

15 Cab ventilation air filter: replace filter

EVERY 500 HOURS WORK

16 Engine oil filter: replace filtering cartridge (1)

17 Bevel gear set/brakes return filter: replacefiltering cartridge

18 Transmission/torque converter deliveryfilter: replace filtering cartridge

19 Oil filter on hydraulic circuit return: replacefiltering cartridge

20 Engine coolant filter: replace filtering car-tridge

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MINMAX

Oil dipstick (A)

The correct oil level must be included between the twomarks.

2. TORQUE CONVERTER/TRANSMISSION HY-DRAULIC CIRCUIT - Check oil level

Open the right upper panel. With the engine inoperativesince at least 15 minutes and the machine on flatground, check that the oil level is near the upper marketched on dipstick 1 attached to the cap.If required, top-up with oil through the filler neck checkingthe level after operating the engine at low idle for a fewminutes and shifting the transmission a few times.

A. Engine oil dipstickB. Engine oil filler neck.

1. Cap with dipstick

3. RADIATOR -Check coolant level

Open the upper panel of the engine compartment andcheck the level of the engine coolant through levelindicator A. The coolant level must not decrease belowthe indicator.If required, top-up with coolant through the filler neck,with the engine inoperative since at least 1 hour, torelease the pressure inside the circuit.

It is recommended to fill the circuit with PREMIUMANTI-FREEZE liquid diluted 50% with water, for maxi-mum protection against:- anti-freeze action to -40 °C (-40 °F);- formation of calcium scale;- boiling during hot climate up to +110 °C (230 °F)- corrosion of metallic materials.

AB

D350M0100

D350M0099

D350M0101

Never operate the engine with the oil level below thelower mark (MIN).

WARNING

EVERY 10 HOURS WORK

ENGINE:

1. ENGINE OIL: Check oil level

Open the upper panel of the engine compartment.With the machine on flat ground and the engineinoperative since at least 5 minutes, check with theappropriate dipstick A that the oil level is between thetwo marks indicated.Top-up with oil through filler neck B as required, toreach maximum level, taking care that this mark is notexceeded.

1

A

D350M0176

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4. EQUIPMENT HYDRAULIC SYSTEM -Oil level check

Check that the oil level is included between the middleof gauge B and maximum level.This check must be performed with the machine on flatground, the equipment resting on the ground, cold oiland engine operating at low idle.

EVERY 50 HOURS WORK

If the level appears through lower gauge A, removethe filler cap indicated and top-up with oil throughthe filler neck. The level must appear through uppergauge B.

5. FUEL TANK -Draining condensation

Drain the impurities (water and deposits) from thebottom of the tank collected by the draining well, fromthe lower side of the machine.

Fuel draining valve

For this purpose, open the valve indicated in the figureand let the liquid flow from the pipe into a container,until clean fuel runs-out. Drain more frequently whenoperating in humid conditions, cold climate andconsiderable temperature changes. If required, cleanthe mesh filter in the fuel filler neck. When thetemperature exceeds 0 °C (32 °F) the draining must beperformed prior to starting the engine. Whentemperatures are below 0 °C (32° F) the draining mustbe done at the end of the work-shift, since frozen watercannot be drained.

B

A

D350M0102

D350M0103

D350M0104

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3550

6. BLADE LINKAGE CYLINDERS -Greasing the linkages

Pump grease into the grease fittings for the lubricationof the blade articulations. The grease fittings indicatedby arrows are located on the opposite side of themachine, as well.

7. RIPPER AND FRONT EQUIPMENT LINK-AGES - Greasing the linkages

Pump grease into the grease fittings for the lubricationof the ripper articulations.Black arrows indicate that the grease fitting can beseen from the opposite side.

EVERY 50 HOURS WORK

Pump grease into the grease fittings for the lubricationof the front equipment articulations.

8. CAB VENTILATION AIR FILTER - Clean filter

To reach the filter, open the panel under the cab onthe left side of the machine. Remove the fourretaining screws V indicated in the figure and re-move filter F.

Check the filter. If clogged proceed with the cleaning,as described here below:- tap slightly the filter on a flat surface, with the holed

portion downward;- blow it with clean and dry compressed air. Move the

air jet up and down the plaits of the elements, untilall dust is eliminated;

- reinstall the filter.

When using compressed air for cleaning parts, usesafety glasses with side shields or goggles tominimise the danger of personal injuries caused byflying particles. Limit pressure to 2 bar, inaccordance with local and national regulations.

WARNING

Notice - Keep the jet of compressed air at a certaindistance from the filter.

Note - Before installing the filter, clean the inside of thecanister.

V F

D350M0071

D350M0059

D350M0105

D350M0177

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11. ENGINE OIL - Changing the oil

Open the left front panel of the engine compartmentand drain, with hot engine, the oil through lower plug T,removed using a 8 mm Allen wrench. To facilitate thedraining, remove oil filler cap B. Once the oil stopsflowing, refill with engine of the prescribed type andgrade (see "TABLE OF CAPACITIES") as follows:- retighten draining plug T and refill with fresh oil

through filler neck B until the maximum level markedon dipstick A is reached;

- operate the engine for a few minutes;- cut-off the engine and top-up to maximum level, after

a few minutes.

T. Oil draining plug

A. Oil dipstick - B. Filler neck.

9. BEVEL GEAR SET / BRAKES - Check oil level

Check the oil level with the machine on a flat groundand the engine inoperative since at least 5 minutes.To reach the oil dipstick, open the panel indicated onthe right side of the machine. Loosen plug 2, removethe dipstick underneath and check that the oil level isincluded between the mark MIN and MAX etched onthe dipstick itself. top-up with oil, as required, throughthe filler neck.

10. FINAL DRIVES - Check oil level

Check the oil level reaches plug A indicated (a levelplug on each final drive). Top-up, as required, throughplug B.

A. Oil level plug - B. Oil filler plug.

EVERY 50 HOURS WORK

EVERY 250 HOURS WORK

A

B

D350M0106

T

D350M0060

D350M0027

2

D350M0028

B

A

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EVERY 250 HOURS WORK

Never use gasoline, solvent or other flammable fluidto clean parts. Use exclusively qualified, non-flammable, non-toxic commercial solvents.

Note - In the event the fuel used has a sulphur contentexceeding 1%, the engine oil must be changed every150 hours.

WARNING

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust.Be sure exposed personnel in the area of operationare clear of the machine before moving it or itsattachments. Walk completely around the ma-chine before mounting. Sound horn.

WARNING

12. TRACK CHAIN TENSIONER - Lubricate

Remove the cover secured to the track frame, indi-cated by the arrow, to reach the grease fitting.

D350M0061

Pump grease into track tensioner lubrication fitting 1until grease gets out valve 2.

13. FAN - ALTERNATOR - WATER PUMP BELT -Check the condition and sagging of the belt

Never check the tension of belts with engine in opera-tion. Be especially aware of the presence of fans.Do not place the head, body, limbs, feet or hands nearbelts or rotating fans. be especially aware of blowingfans.

Open the right and left panels of the engine and make avisual inspection. In case of cross-way cracks on the beltare acceptable.Cross-way cracks combined with longitudinal cracks, flak-ing and breaks are not acceptable. if so, replace the belt.

Beltsto be replaced

Acceptablecondition

WARNING

D350M0062

12

D350M0178

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Replacing the belt

Use a lever to move the tensioner and remove the belt.To install a new belt, place it on the fan and crankshaftpulleys, lift the tensioner and complete the loop of thebelt, as illustrated in the figure. Also, check that the nutsecuring the tensioner is tightened to a torque of 4.7daNm.

Removal of the belt

Belt tension check

Measure the tension on the long side of the belt that byapplying a finger pressure, should sag between a mini-mum 9.5 mm and a maximum 12.7 mm (3/8 ÷ ½ in).A more accurate check can be done using a beltdynamometer applied in the same middle position ofthe longest side of the belt.The tension limits, in this case, should be includedbetween a minimum of 36 daN and a maximum49 daN.

D350M0030

D350M0029

14. TRACK FRAME PIVOT PINS -Greasing the linkage

Pump grease into the track frame pivot lubricationfittings. The fitting indicated by the arrow is alsolocated on the opposite side of the machine.

D350M0031

15. CAB VENTILATION AIR FILTER -Replacing the filter

Remove the filter as indicated in item 8 and replace it.

EVERY 250 HOURS WORK

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3550

16. ENGINE OIL FILTER -Replacing the filtering cartridge

Open the upper and lower panel engine t located on theleft side of the machine.

Engine oil filter

EVERY 500 HOURS WORK

The cartridge must be replaced at the prescribedintervals, since in the event of clogging, the oil circu-lated is not filtered.Replace the filter proceeding as follows:- clean the contact area of the filter and remove it;- fill the new filter with fresh oil and lubricated the

relevant gasket;- hand tighten the filter. Once the gasket contacts its

seat on the cylinder block, tighten ¾ turn further.

17. BEVEL GEAR SET/BRAKES RETURN FILTER -Replacing the filtering cartridge

Open the left panel of the engine compartment andremove filter F1 from the relevant support. Replace itwith a new one and tighten it to 3.5 - 4 daNm.

18. TRANSMISSION/TORQUE CONVERTERDELIVERY FILTER -Replacing the filtering cartridge

Open the left panel of the engine compartment andremove filter F2. Replace it with a new one.

F1

D350M0107

D350M0108

F2

D350M0109

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Never use gasoline, solvent or other flammablefluid to clean parts. Use exclusively qualified, non-flammable, non-toxic commercial solvents.Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust.

WARNING

Proceed as follows:- clean cover L of the filter and the surrounding area;- remove the cover, remove nut S and extract filter F.

Replace it with a new one- check that the oil level is included between maximum

level sight gauge B and minimum level gauge A. Thischeck must be done with the machine on flat ground,cold oil and the engine operating at low idle;

- top-up, as required, through filler neck D.

19. RETURN FILTER ON THE EQUIPMENTHYDRAULIC CIRCUIT -Replacing the filtering cartridge

EVERY 500 HOURS WORK

B

A

D350M0110

D L

Remove any dirt or scale accumulated between thesupport and the filter. Close valve V on the filtersupport.

20. ENGINE COOLANT FILTER -Replacing the filtering cartridge

Open the upper panel of the engine compartment.

F

S

D350M0101

D350M0179

DANGER

Fluid under pressure. Prior to removing the cap,turn it slowly to release the pressure.To prevent burns, do not open the radiator cap witha hot engine.

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust.

WARNING

Turn slowly the radiator cap, with engine inoperativesince at least 1 hour, to release the pressure trappedinside the circuit.

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3550

Remove filter F preventing any spill of liquid. Prior toreinstalling a new filter, clean the gasket contact areaon the support.Install the new filter after smearing a thin film of oil onthe gasket, until it touches the seat on the support.Then, tighten it by hand ½ turn further.Reopen the valve on the filter.Start the engine and check that there are no leakages.Cut-off the engine and check the coolant level.

1

EVERY 500 HOURS WORK

EVERY 1000 HOUIRS WORK

21. FULE FILTERS - Replacing the filters

Open the left panel of the engine compartment. 22. BEVEL GEAR SET AND BRAKES -Changing the oil and the suction filter

Draining the oil

Place a container of at least 200 litres (53 US Gal)under the transmission housing.Remove the plugs indicated and let the oil draincompletely.Retighten the draining plugs after washing them.

D350M0111

V

D350M0113

D350M0112

D350M0114

Never use gasoline, solvent or other flammablefluid to clean parts. Use exclusively qualified, non-flammable, non-toxic commercial solvents.When using compressed air for cleaning parts,use safety glasses with side shields or goggles tominimise the danger of personal injuries causedby flying particles. Limit pressure to 2 bar, inaccordance with local and national regulations.

WARNING

Clean the base of the support and the surroundingarea.Remove the filters indicated in the figure.Clean the filter gasket seat area of the support with adry rag.Replace gaskets "1", fill the filters with clean fuel andsmear a thin film of engine oil on the gasket, theninstall the filters on the support until touching the seat.Then, turn ½ turn further.

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MINMAX

EVERY 1000 HOURS WORK

Oil refilling

Fill with oil up to the prescribed level, indicated by themark on dipstick 2.Start the engine and let it run at about 1000 rpm.Actuate the steering clutch control levers a few times.Cut-off the engine and, after a few minutes, remove thecap and check that the oil level reaches the upper marketched on the dipstick. Top-up with oil through the fillerneck, as required.

Dipstick 2

The correct oil level must stay within the two marks.

Replace the suction filter. Remove the filter indicatedin the figure and replace it with a new one. Check thelevel and top-up as required.

23. TORQUE CONVERTER/TRANSMISSIONHYDRAULIC CIRCUIT - Changing the oil

Draining the oil

Drain the oil from the bottom of the machine with hottransmission, in a container of at least 75 litres (18.8US Gal).

To facilitate the draining, open the panel on the right ofthe cab and loosen cap 1 of the transmission oil fillerneck.

D350M0115

D350M0114

1

D350M0100

D350M0180

D350M0027

2

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust.

WARNING

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3550

EVERY 1000 HOURS WORK 25. BATTERIES -Checking the electrolyte level

Notice - To keep the batteries efficient, comply withthe following rules:- do not keep lights ON for prolonged periods with

engine inoperative or at low idle;- for short stops, it is preferable not to cut-off the

engine, but let it run at low idle, since a starting wouldrequire a considerable supply of power by thebatteries;

- make sure that the cable terminals are properlysecured on the battery posts and that they areprotected by a slight film of pure vaseline;

- keep batteries clean, especially the upper side;- prior to any intervention on the terminals, disconnect

the grounding cable.

Open the left rear panel indicated.Check that the electrolyte level reaches the referencemark, on the side of the battery.To top-up the electrolyte level with de-mineralisedwater.

24. PROPELLER SHAFT - Greasing

Pump grease (three or four strokes) into theappropriate grease fittings to lubricate the spiders.

Note - The operation must be performed more fre-quently when operating in very dusty conditions.

Propellershaft

Refilling of oil

Retighten the plug, after cleaning it accurately, and fillwith oil through filler neck 1 up to the upper marketched on the transmission dipstick.Start the engine and let it run at low idle for a fewminutes. Actuate the gearshift lever a few times.Cut-off the engine and, after a few minutes, top-up thecircuit with oil, checking dipstick 1.

D350M0116

D350M0117

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust.Be sure exposed personnel in the area of operationare clear of the machine before moving it or itsattachments. Walk completely around themachine before mounting. Sound horn.

WARNING

Batteries contain SULPHURIC ACID.Protect the eyes when working on batteries, toprevent the effects of spraying acid solution.In the event acid contacts the skin, eyes or clothing,RINSE IMMEDIATELY WITH WATER FOR ATLEAST 15 MINUTES. Seek immediate medical help.Remember to connect both ends of the boostercables in the proper manner (+) with (+) and (-) with(-). Avoid short-circuits of the terminals.BATTERY GAS IS HIGHLY FLAMMABLE.Extinguish all smoking materials and open flamesprior to checking, filling or checking batteries.Never check charge by placing metal objectsacross the posts.

WARNING

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A. Oil level plug - B. Filler plug - P. Draining plug -S. Draining plug.

Retighten plugs A and B and repeat the operation onthe other side.

EVERY 1000 HOURS WORK 27. ENGINE AIR CLEANER -Replacing the cartridges

Open the left panel of the engine compartment.Remove the cover from canister C freeing hooks D.Extract the two co-axial filtering elements. one inner Band outer A, and replace them.Before installing new elements, clean the inside ofcanister C.

ABS

C

Important - To reduce machine down time, it is goodpractice to maintain an appropriate stock of spareparts of the prescribed type, obtainable from the SalesOrganisation.

26. FINAL DRIVES - Changing the oil

- Stop the machine with plugs P indicated in the figurein the bottom position (vertically).

- Remove draining plugs P and S.- Remove plugs A and B (one per final drive) and let

the oil drain. After tightening plugs S and P, refill withnew oil through filler plug B until it appears throughplug A.

- Repeat the operation on both sides.

D

D350M0121

D350M0181

D350M0182

P D350M0028

B

A

When using compressed air for cleaning parts,use safety glasses with side shields or goggles tominimise the danger of personal injuries causedby flying particles. Limit pressure to 2 bar, inaccordance with local and national regulations.

WARNING

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3550

EVERY 1000 HOURS WORK

28. TRANSMISSION/TORQUE CONVERTERSUCTION FILTER - Cleaning the filter

With the machine on flat ground and hot transmissionoil, remove the draining plug indicated in the figure. Letthe oil drain, disconnect the suction pipes and removethe filters cover (with filters). Clean the components ofthe filters (and canisters) and reinstall them. Connectthe suction pipes. Reinstall the draining plug.Fill oil through the filler neck, up to the upper mark onthe dipstick.Start the engine, let it run at low idle for a few minutesand actuate the gearshift lever a few times.Cut-off the engine and, after a few minutes, top-up theoil level in the circuit checking the dipstick.

D350M0068

29. TRANSMISSION/TORQUE CONVERTERBREATHER - Replacement

Open the left panel of the engine compartment to reachbreather A indicated in the figure.

D350M0035

Remove any trace of oil or dirt from the transmissionbreather: remove the breather. Clean it accurately witha non-toxic and non-flammable solvent. Dry andreinstall it in its seat.

A

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust.Be sure exposed personnel in the area of operationare clear of the machine before moving it or itsattachments. Walk completely around themachine before mounting. Sound horn.

AVOID POLLUTING THE ENVIRONMENTDispose of batteries, hydraulic fluids, lubricantsand coolants, filtering elements and absorbingmaterials impregnated by these fluids, incompliance with current national regulations,classifying these materials as polluting, noxiousand dangerous waste.

WARNING

Never use gasoline, solvent or other flammablefluid to clean parts. Use exclusively qualified, non-flammable, non-toxic commercial solvents.

WARNING

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EVERY 1000 HOURS WORK

30. BEVEL GEAR SET AND BRAKESBREATHER - Replace

Open the right rear panel to reach breather B indicatedin the figure.

Remove any trace of oil or dirt from the transmissionbreather. Remove it and replace it with a new one.

D350M0034

B

31-32. FUEL INJECTORS-ENGINE VALVES -Check calibration of injectors

Have the injectors checked by a specialisedworkshop.

33. ENGINE BREATHER - Clean

To reach breather C, indicated in the figure, open theleft panel of the engine compartment.

C

D350M0033

Clean the mesh filter.

Never use gasoline, solvent or other flammablefluid to clean parts. Use exclusively qualified, non-flammable, non-toxic commercial solvents.

WARNING

DANGER

Keep hands away from the tip of injectors whenchecking the calibration. Fuel finely sprayedunder pressure is capable of penetrating the skin,causing blood poisoning. Also, when calibratingan injector, always wear eye protections with sideshields.

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3550

Oil refillingReinstall plug T.Remove cap D on the tank and fill the oil into the tankthrough the filler neck up to maximum level B. Thenreinstall cap D.

Start the engine, move slowly the blade raising it a fewtimes as well the ripper (if installed)to fill cylinders and pipes. Top-up with oil several times.Check that the oil level is in the middle of maximum levelsight gauge B. This check must be done with themachine on flat ground, equipment resting on theground, cold oil and engine operating at low idle.

Do not run the engine of this machine in closedareas without proper ventilation to remove deadlyexhaust.Prior to starting the engine, warn all the personnelthat could be working around the machine.

WARNING

After any maintenance intervention on the tankrequiring the draining of the oil, when refilling it isnecessary to remove plug "P" to provided thebleeding of air trapped inside the tank.

WARNING

34. EQUIPMENT HYDRAULIC CIRCUIT -Oil change

Draining the oil

- Place the machine on flat ground, with the equip-ment resting on the ground;

- remove oil filler cap D and remove lower plug T todrain the oil form the tank.

EVERY 2000 HOURS WORK

D350M0032

A

B

D

T

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35. ENGINE AIR CLEANER CLOGGED -Clean the cartridges

Operation to be performed when indicator 1, located onthe instrument board indicates that the air cleaner isclogged.See operation no. 27.

AS REQUIRED

Operations to be performed when the relevant indica-tors are activated:

1. Indicator - hydraulic oil filter clogged2. Indicator - engine air cleaner clogged

Operation to be performed when indicator 3 on theinstrument board comes ON indicating that the returnoil filter is clogged.See operation no. 19.

Fluid under pressure. Turn the cap slowly torelease the pressure before removing it.

WARNING

36. OIL FILTER ON EQUIPMENT HYDRAULICCIRCUIT RETURN -Replace the filtering cartridge

37. FUEL FILTERS -Draining the condensation

Operation to be performed when the blue indicatoron the monitor panel comes ON, indicating therequirement for the draining of water from the fuelfilter.

Draining condensation

Open the left upper panel of the engine compartment,perform the draining of the water and sediments fromthe fuel filter through the draining valve indicated.With engine inoperative, loosen the valve locatedunder the filter about 4 full turns and move it downwardabout 2 cm.Let any water and sediment flow until clean fuel onlygets-out.Push the valve upward and tighten, avoiding over-tightening.

3550-M005

D350M0123

D350M0063

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3550

OTHER OPERATIONS TO BEPERFORMED AS REQUIRED

In the event the sag of the track chains in the zone Lincluded between the support roller and the idlerexceeds 30 - 40 mm (normal tension) pump grease intothe fitting of valve VR of the adjustment cylinder, untilthe normal track chain is obtained.If the sag is lower, drain grease from the cylinder,loosening slightly adjustment valve VR, moving back-ward the machine a few yards, if necessary.Retighten the valve.

Fluid under pressure. To educe the tension of thetrack chains, please comply with the proceduresuggested in the "Operation and MaintenanceManual". The idler return spring is installed under aconsiderable compression load. In the event disas-sembly and reassembly operations must be carriedout, comply with the procedure described in the"Repair Manual".

38. UNDERCARRIAGE - Checking the sag of thetrack chains

WARNING

Fluid under pressure. Do not decrease the tensionof the track chain loosening pressure relief valveVS. Do not remove the grease fitting installed onadjustment valve VR.

DANGER

D350M0064

Note - In muddy, claysh, very wet grounds and in thepresence of sand, gravel, snow and ice, the trackchains must be somewhat less tense.

To reach the compartment, loosen screws V and liftcover C.

D350M0061

CV

C. Cover; V. Screws.

Adjusting the track chain.

VR. Adjustment valve; VS. Pressure relief valve.

VRVS

D350M0124

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ELECTRICAL SYSTEMFUSES

The fuses are visible on the left side of the dashboardfor the version with cab and inside the front pocket (asindicated in the figure).Remove the covers press fitted on fuse boxes A andB.The fuses protect:

FUSE BOX A(rear mounted)1 = Machine services/cab services - 5 Amp2 = Electric cut-off (hold). Operator safety levers -

5 Amp3 = Start safety - 5 Amp4 = Buzzer - Monitor - Optional - 5 Amp5 = Operator safety relay - 5 Amp6 = Horn - 7.5 Amp7 = Micro controller - 7.5 Amp8 = Transmission control buttons - 5 Amp9 = Cab ceiling lights - Cigar. lighter -

Voltage reduction - 7.5 Amp10 = Front work lights - 7.5 Amp11 = Rear work lights - 7.5 Amp

FUSE BOX B1 = Front lights - Symbol lights - 7.5 Amp2 = Heater electric fan - 20 Amp3 = Right door wiper - 7.5 Amp4 = Left door wiper - Door washer 7.5 Amp5 = Rear wipers - 7.5 Amp6 = Front wipers - Front & rear washers - 7.5 Amp7 = Condenser fan - 20 Amp8 = Pre-heater relay - Pre-heater indicator - 5 Amp9 = socket and EPROM - 5 Amp10 = Optional - 7.5 Amp11 = Not used - 7.5 Amp

WARNINGAlways disconnect the ground cable of the batter-ies prior to cleaning, repairing, connecting ordisconnecting any wire of the electrical system soas to prevent personal injuries.Always maintain efficient all the lights equippingthe machine. Replace any burnt-out bulb at soonas possible.

Box A

Box B

LINK FUSES

"Link" fuses are visible by opening the left engine hoodand are located on the inner side of the frame beam.Fuse 1 protects the machine - 50 Amp.Fuse 2 protects the alternator - 80 Amp.

2

1

1-2. LINK fuses

on CAB on ROPS

D350M0065

3550R002

D350M0183

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3550

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SE

MO

LYD

ISU

LFID

EG

RA

DE

251

H-E

PA

ll se

ason

SA

E 1

5W -

40

-15÷

40° C

(-5÷

104

°F)

S

AE

10W

- 3

0-2

5÷20

°C (-

13÷7

7 °F

)

SA

E 1

0W -

30A

ll se

ason

TA

BL

E O

F C

AP

AC

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S

50 -

50 m

ixtu

re o

f w

ater

and

ant

i-fr

eeze

. The

mix

ture

has

ant

i-oxi

da-

tion,

ant

i-cor

rosi

on,

anti-

scal

ing,

anti-

foam

ing

prop

ertie

s an

d an

ti-fr

eezi

ng d

own

to -

35 °

C (

-31

°F).

Up

to 0

.5 %

SP

erio

dic

chan

ge

fr

om 0

.5 t

o 1

%H

alf

the

norm

al in

terv

al

O

ver

1 %

One

qua

rter

the

nor

mal

int

erva

l

If th

e co

nten

t of

sul

phur

exc

eeds

0.5

%,

chan

ge t

heen

gine

oil

as fo

llow

s:

AK

CE

LA

EX

CA

VA

TO

RF

LUID

MS

1230

GR

EA

SE

SP

EC

B-2

7

No

tes:

-O

il qu

antit

ies

indi

cate

d ar

e th

ose

requ

ired

for

perio

dica

l cha

nges

.-

In c

ase

of a

low

er c

lass

ifica

tion

of C

H4

engi

ne o

il, th

e ch

ange

mus

tbe

don

e ev

ery

250

hour

s.-

The

cha

nge

inte

rval

mus

t be

redu

ced

whe

n pr

esen

t sul

fur i

n th

e fu

elex

ceed

to

0,5%

or

the

ambi

ent

tem

pera

ture

exc

eed

to 3

8 °C

.

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Craw

ler Dozer

3550

Print No. 844156791st edition

English 02/11

from serial no: FNH03550NBHC05001

Operator’s Manual

3550Crawler Dozer