2 120m motor grader 3 wiifm gain the ability to create and maintain roads build flight lines level...
TRANSCRIPT
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120M MOTOR GRADER
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WIIFM
• Gain the ability to create and maintain roads
• Build flight lines
• Level areas
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OVERVIEW
• Mission• Major Components
– Left side• Front and back
– Right side– Drawbar, Circle, and Moldboard components
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OVERVIEW
• Controls and Instruments– Left joystick– Right joystick– Forward controls and indicators– Right side control panel
• Transmission Operation• Blade Positions• Operating TTP’s
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LEARNING OBJECTIVES
• TLO’S• ELO’S
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METHOD / MEDIA
• Informal lecture, Demonstration, and Practical
Application methods
• Power point
• Student handout
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ADMINISTRATIVE
• Instructor rating forms
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EVALUATION
• A knowledge based test will be conducted on training day 4.
• A performance based test will be conducted on training day 5 where students will be required to construct a road.
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SAFETY AND CEASE TRAINING
• Tornado• Fire• Snow• Lightning• Injury
– Pinch points– Tractors close proximity to one another
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MISSION
• The 120M motor grader is an all purpose, medium sized, wheeled machine used for spreading and evening various types of granular material. Power is provided by a Caterpillar in line six cylinder, direct injected diesel engine. Hydraulically operated implements allow blade positioning for forward grading, ditching or embankment grading, and snow removal.
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MISSION
• A scarifier allows loosening of compacted material prior to grading. Front leaning wheel and frame articulation provide maximum maneuverability. The grader has a sound suppressing Rollover Protective Structure (ROPS) cab with insulation, heater, windows, which allows for all weather operations.
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Scarifier tooth stow rack
LEFT SIDE
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Scarifier
FRONT
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Scarifier
Teeth
11 moderate soil
6 hard soil
FRONT
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Scarifier tooth stow rack
Fuel tank
Data plate
Left front access hatch
Left rear access hatch
Lubrication order
Backup camera
LEFT SIDE
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Circuit breakers
LEFT FRONT ACCESS HATCH
OE fill
OE dipstick
Coolant tank
Transmission check/fill
Air filter
Fuel water separator
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NATO slave receptacle
Battery switch
Hydraulic sight gauge
LEFT REAR ACCESS HATCH
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Right rear access hatch
Right front access hatch
Emergency exit
RIGHT SIDE
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Batteries
RIGHT REAR ACCESS HATCH
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Air tank drain valve
Turbocharger
Alternator
RIGHT FRONT ACCESS HATCH
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Blade
Moldboard
End bit
Cutting edges
When manipulating the blade there are some hazards to pay attention too. They are tires, scarifier, ladder, fuel filler neck, and any other metal to metal contact.
DRAWBAR, CIRCLE, & MOLDBOARD
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Yields rolling action General grading position Yields cutting action
FINER POINTS
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CUTTING EDGES
• Cutting edges must be changed at 3/4” from the moldboard
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Blade
Right lift cylinder
Circle
Saddle
Centershift cylinder
Left lift cylinder
DRAWBAR, CIRCLE, & MOLDBOARD
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CRITICAL LUBRICATION
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QUESTIONSQ- How many scarifier teeth do you use for hard soil and how many for moderate soil?
A- For moderate soil you use 11 teeth. For hard soil you remove 5 teeth, stowing them in the scarifier stow rack, and use 6 teeth for hard soil.
Q-What are some of the points you would want to use dry lube for?
A-Dry lube is used for blade circle, circle top wear surface, and circle interior vertical surface.
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QUESTIONS
Q-What is the scarifier used for?
A- A scarifier allows loosening of compacted material prior to grading.
Q- What allows for all weather operation?
A- The sound suppressing ROPS cab with insulation, heater, and windows allow for all weather operation.
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BREAK
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CONTROLS AND
INSTRUMENTS
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1. Left joystick
2. Forward controls and indicators
3. Monitoring system
CONTROLS AND INSTRUMENTS
4. Right joystick
5. Scarifier control roller
6. Right side control panel
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LEFT JOYSTICK
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1. Downshift button
2. Wheel lean – LEFT
3. Up shift button
4. Wheel lean – RIGHT
5. Automatic articulation
control
6. Steer left
7. Steer right
8. Blade lower – LEFT
9. Blade lift – LEFT
LEFT JOYSTICK
10. Articulation control
11. Automated blade
control
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JOYSTICK STEERING
• Aligning the steering joystick
– Start engine
– Move joystick slowly to the left or right to closely match the angle of the front wheels
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JOYSTICK STEERING
• Failure to align
– Can’t steer
– Can’t disengage park brake
– Can’t shift from neutral
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RIGHT JOYSTICK
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1. Blade sideshift – LEFT
2. Blade sideshift – RIGHT
3. Blade lower – RIGHT
4. Blade lift – RIGHT
5. Centershift – LEFT
6. Centershift – RIGHT
7. Blade pitch control – FORWARD
8. Blade pitch control –
BACKWARD
9. Blade circle
10. Horn
11. Turn signals
RIGHT JOYSTICK
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JOYSTICK CONTROLS
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1. Throttle resume/decel switch
2. Differential lock
3. Transmission control switch
JOYSTICK CONTROLS
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BREAK
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FORWARD CONTROLS
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5. Accelerator
6. Service brake
7. Inching pedal
FORWARD CONTROLS AND INDICATORS
1. Centershift lock indicator
2. Secondary steering test switch
3. Parking brake
4. Engine start switch
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RIGHT SIDE CONTROL PANEL
1. Centershift lock switch
2. Defrost fan switch
3. Blade cushion switch
4. Cigarette lighter
5. Throttle set/accel switch
6. Throttle hold mode switch
7. Hazards
8. Work lights
9. High beam switch
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ALL WHEEL DRIVE
• AWD mode switch– AWD off (circle)
Tandem wheels propel – Creep only (snail)
Front wheels propel
Maximum speed of 5mph– Manual mode (hand)
Six wheel drive
-Manual mode indicator light
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ALL WHEEL DRIVE
• AWD control dial – 100% of rear wheel speed– 99% of rear wheel speed– 120% of rear wheel speed
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MESSENGER DISPLAY
1. Messenger display• provides machine
information, performance, totals, settings, service menus, and operator warnings
2. Implement lockout switch• Steering is not
effected• Used when traveling
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OPERATOR WARNING CATEGORIES
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TRANSMISSION OPERATION
• Automodulation
– Shifting into forward or reverse utilizing trans. control switch
– Trans will engage smoothly
– Recommended for gears 1-5
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TRANSMISSION OPERATION
• Moving the machine using the inching pedal
– Depress the inching pedal
– Select direction and gear
– Release pedal slowly,
launching the machine
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TRANSMISSION OPERATION
• Sequential Speed Shifting
– Up/Down shifting while the tractor is in motion
– Use up/downshift buttons
– Match shifts to machine load and speed
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TRANSMISSION OPERATION
• Shuttle Shifting
– While moving
– Changing direction without stopping in neutral
– Move the trans control switch from forward to reverse with out stopping in neutral
(before towing you must disengage the driveshaft to prevent damage to the transmission and driveshaft)
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TRANSMISSION OPERATION
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QUESTIONS
Q - What is the max amount of time the secondary steering test switch may be utilized before damage to the electric motor occurs. A - The secondary steering motor test switch can only be utilized for a maximum of 60 seconds before damage occurs to motor and possible replacement. Q - When using the manual mode for all wheel drive, what is the percentage of the front wheel speed in relation to the rear wheels? A - The speed control allows for front wheels to turn 99-120% of rear wheel speed.
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QUESTIONS
Q - What joystick and what is the motion for blade lower left? A - To lower the blade on the left side grasps the left joystick with the left hand. Push down/forward on left joystick to lower the left side of the blade. Q - What must the operator ensure is disengaged when turning? A - The operator must ensure the differential lock is disengaged when turning to prevent damage to the differentials.
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BLADE POSITIONS
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RIGHT HAND GENERAL GRADE
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RIGHT HAND GENERAL GRADE
• General grade positions are utilized by the operator to level material.
1. Position blade 4-6” from the deck.
2. Lean wheels to the heal to decrease side draft.
3. Pitch blade (3” overhang).
4. Center shift approximately 8” to the left. (heel cylinder will by straight up and down).
5. Circle blade 25 to 30 degrees to cast material outside of the left tandem.
6. Lower blade to the deck ensuring the blade is HORIZONTAL.
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RIGHT HAND DITCHING POSITION
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RIGHT HAND DITCHING POSITION
• Ditching positions are utilized IOT make sloped cuts of 3-4” at a maximum of a 3-1 slope and cast material between the tandems.
1. Position blade 4-6” from the deck.
2. Lean wheels to the heel.
3. Ensure blade is centered on the circle.
4. Pitch blade (3” over hang).
5. Center shift approximately 8” to the left. (heel cylinder will by straight up and down).
6. Circle blade 45 degrees to cast material between the tandems.
7. Raise left lift cylinder approximately 18”.
8. Lower the toe to the deck
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CENTER WINDROW POSITION
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CENTER WINDROW POSITION
• Center windrow position is utilized to form the crown of the road after reaching centerline with a windrow.
1. Position blade 4-6” from the deck.
2. Ensure wheels are straight up and down.
3. Pitch blade (3” over hang).
4. Circle blade to 0 degrees. (straight across circle)
5. Ensure blade is centered on circle. (no side shift, six bolts on either side)
6. Center shift so that neither lift cylinder is straight up and down. (create a v with the lift cylinders)
7. Lower blade to 1 to 2 inches off the deck. (Depends on size of windrow)
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BREAK
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LEFT HAND SHOULDER CLEANUP
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LEFT HAND SHOULDER CLEANUP
• Shoulder cleanup is utilized by the operator to move the windrow created by ditching operations, forming the road shoulder and windrowing material to be utilized to form the road crown. Minor depth adjustments can be made using blade pitch.
1. Position blade 4-6” from the deck.
2. Lean wheels to the right.
3. Pitch blade (3” over hang).
4. Assume center windrow position.
5. Lower blade to the deck.
6. Raise blade 2” off the deck.
7. Side shift blade all the way to the left.
8. Center shift all the way to the left.
9. Circle blade past 45 degrees to cast material between the tandems. (toe will be positioned 12-15”from front left tire)
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TRAVEL POSITION
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TRAVEL POSITION
• Travel position is used for moving the grader long distances and on major roads with cross traffic to prevent damage to machine or other vehicles.
1. Assume right hand general grade position.
2. Circle blade to 45 degrees. (do not hit the ladder)
3. Center shift all the way to the left.
4. Side shift blade to where entire blade is inside the width of the tires.
5. Raise toe all the way. Keep heel horizontal with toe.
6. Lock hydraulics using the implement lock out switch.
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PARK LINE POSITION
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PARK LINE POSITION
• Park line position is used to properly ground implements.
1. Assume right hand general grade position.
2. Pitch blade forward all the way.
3. Lower blade to 1-2” off the deck.
4. Put both side of blade in float.
5. Lower scarifier to the deck.
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QUESTIONS
Q - In left hand general grade where is the windrow deposited? A - In left hand general grade the heel will be on the right outside tandems horizontal to the deck, therefore the windrow will be deposited outside the right tandems. Q - What is the purpose of the shoulder cleanup position? A - Shoulder cleanup is utilized by the operator to move the windrow created by ditching operations, forming the road shoulder and windrowing material to be utilized to form the road crown.
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OPERATING TTP’S
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OPERATING TTP’S
Start up proceduresPerform all before checks
Battery switch
Three points of contact
Adjust seat, seat belt, and arm pads
Transmission in neutral
Engage parking brake
Crank engine no longer then 30 seconds if tractor doesn’t start wait 2 minutes to let starter cool down
Idle machine cycling implements until hydraulic oil reaches 41 degrees Fahrenheit.
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OPERATING TTP’S
Shut down proceduresPlace transmission in neutral
Parking brake
RHGG
Blade pitch
Lower blade and scarifier to the deck
Idle grader for 5 mins to allow turbocharger to cool
Three points of contact
Perform after checks
Battery switch
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OPERATING TTP’S
• Use the left joystick to turn wheels then frame in the direction of travel
• To further reduce turning radius lean wheels is the direction of travel
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OPERATING TTP’S
Leveling an area. (basic leveling)– Perform 3 overlapping General Grade passes moving the
material horizontally across the training area – The initial cut will not be more than ½” cutting with the whole
blade. – The remaining passes will only serve to move the windrow
across the training area while continuing to cut ½” » Blade horizontal, toe skims, heal cuts
– Turn the machine around, remain in General Grade, push the windrow back across the training area, evenly re-depositing the material
– When the machine reaches the opposite side of the training area there should not be any windrow remaining
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QUESTIONS
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BREAK
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• Before, during and after operational checks• Positions and moving the tractor.• Basic leveling
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QUESTIONS
Q - How long may I try to start the tractor before damage occurs? A - You can only turn over the starter for 30 seconds before overheating and damage occurs to the starter. Q - How must the heel and toe remain while basic leveling? A - The heel and toe must remain horizontal to the deck while basic leveling.
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QUESTIONS
Q - On the first pass of basic leveling how much of the blade are you using to cut? A - On the first pass the whole blade will be cutting a half inch moving material laterally from toe to heel. Q - When turning how can you get your minimum turning radius? A - When turning you can use articulated steering articulating in the direction of your turn as well as lean your wheels in the direction of your turn to reduce you turning radius to the minimum distance.
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7 STEP MILITARY ROAD
The purpose of a 7 step military road is to construct a road way used for travel by various types of military vehicles. The road will consist of ditches, cross slope, and crown for water drainage as well as a proper traveling surface depending on what types of vehicles and how many of them. We will learn the basic steps and design of a road.
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ROAD DESIGN
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7 STEP MILITARY ROAD
• 1. Scarify (as needed)• 2. Level Area (as needed• 3. Marking Cut• 4. Ditching Cut• 5. Shoulder Clean Up• 6. General Grade Modified• 7. Crown (Center Windrow or General Grade
Modified)
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7 STEP MILITARY ROAD
Step 3 Step 4
Step 4 Step 5
Steps 6 & 7 Step 4
Step 5 Steps 6 & 7
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V-DITCHING OPERATIONS ANDBUILD A ROAD
PMCS
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QUESTIONS
Q - What is the scarifier used for? A - A scarifier allows loosening of compacted material prior to grading. Q - What are some of the points you would want to use dry lube for? A - Dry lube is used for circle drive pinion teeth, blade circle, circle top wear surface, and circle interior vertical surface.
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QUESTIONS
Q - What must the operator ensure is disengaged when turning? A - The operator must ensure the differential lock is disengaged when turning to prevent damage to the differentials. Q - When using the manual mode for all wheel drive, what is the percentage of the front wheel speed in relation to the rear wheels? A - The speed control allows for front wheels to turn 99-120% of rear wheel speed.
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QUESTIONS
Q - What is the max amount of time the secondary steering test switch may be utilized before damage to the electric motor occurs. A - The secondary steering motor test switch can only be utilized for a maximum of 60 seconds before damage occurs to motor and possible replacement. Q - When using the manual mode for all wheel drive, what is the percentage of the front wheel speed in relation to the rear wheels? A - The speed control allows for front wheels to turn 99-120% of rear wheel speed.
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SUMMARY
• Mission• Major Components• Controls and Instruments• Transmission Operation• Blade Positions• Operating TTP’s
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120M MOTOR GRADER