cds internal/external lower drive assembly

© 2013 Tesco Corporation. All rights reserved.

QF-4.2.3-9 Rev 0 22th June 2012 TESCO Corporation © 2014 Uncontrolled Copy if printed; All Rights Reserved

CDS Internal/External Lower Drive Assembly

Ref: TP-L&D-6.2.2-41 Global Quality DocumentOwner: Learning and Development Director

Rev: 0 CDS Internal/External Lower Drive AssemblyApproved by: VP, BLCorp Quality Sys. Mgr.

Date: 30th October 2014P a g e | 1

Section 1: IdentifySection 2: OperateSection 3: Install, Remove, MaintainSection 4: Troubleshoot, Repair

Ref: TP-L&D-6.2.2-41 Rev 0

© 2014 Tesco Corporation. All rights reserved. 2

Section 1: Identify

At The Completion Of This Section Students Will Be Able To:

• Identify types of CDS Lower Drive assembly.

• Identify and Explain how the components of the Internal/External CDS Tool work together

• Mud saver function and operation

• Methods for certification and record keeping

• Pipe tool compatibility with various pipe diameters

• Preventative maintenance and corrective maintenance activities

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1Identify


Identify Types of CDS Lower Drive Assembly


Section 1: Identify

Ref: TP-L&D-6.2.2-41 Rev 0

Internal Casing Mandrel Assembly

External Casing Drive Assembly

CDS Lower Drive Assembly:


Section 1: Identify

CDS Lower Drive Assembly:External Drive AssemblyWhen the APPLY function is used, the actuator applies force against the connection collar,

which pushes against the push/pull collar. This applies pressure to the links, which are connected to the slip segments. The links move down, radially contracting the slip segments to

engage the dies onto the outside diameter of the casing. When the casing is gripped by the

CDS, it may be rotated, reciprocated or circulated.

When the RELEASE function is used, the actuator applies force in the opposite direction and the slip segments pull away from the casing

Internal Drive Assembly (ICDS)When the APPLY function is used, the actuator applies force to the connection collar, which pushes against the split collar. This in turn moves the grapples down, which expands the slip segments radially to engage the grapples onto the inside diameter of the casing.

When the casing is gripped by the CDS, it may be rotated, reciprocate or circulated.

When the RELEASE function is used, the actuator applies force in the opposite direction and the grapples pull away

from the casing.

Ref: TP-L&D-6.2.2-41 Rev 0


Identify and Explain How the Components of the Internal/External CDS Tool Work Together


Section 1: Identify

Internal Lower Drive Assembly Components

• Mandrel

• Grapples

• Split Collar

• Connection Collar

• Stop Bumper

• Spearhead

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


Mandrel: Connect to the Top Sub (actuator) and acts as TD Load Path for Casing String is available in six size ranges:

• 4-1/2 in. (250 ton rating) (227 metric ton rating)

• 5-1/2 in. (300 ton rating ) (272 metric ton rating)

• 7 in. (500 ton rating) (454 metric ton rating)




Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


Grapples: radially engage onto the inside diameter of the casing.

Are available in six sizes to handle these casing size ranges, and different casing weights for each size.



• 7 to 7-5/8 in. (500 ton rating) (454 metric ton rating)

• 9-5/8 to 11-7/8 in. (500 ton rating) (454 metric ton rating)

• 13-3/8 to 16 in. (500 ton rating) (454 metric ton rating)


Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


When the Actuator moves to apply position

Split collar moves the grapples down to engage

onto the inside diameter of the casing

Split Collar:

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


Connect the Actuator to Split collar, when actuator applies force

to the connection collar pushes against the split collar.

This in turn moves the grapples down or up

Connection Collar:

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


Stop Bumper:On ICDS the Stop bumper its made up of two parts,

the rubber bumper and the steel collar,

Is used to avoid any damage on casing box connection

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


Spearhead:

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly Components

• Housing

• Connection collar

• Push/pull collar

• Slip links

• Slip segments

• Spearhead

• Dies

• Spear

• Stop Bumper

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly ComponentsHousing:

Is available in two different sizes to handle these casing size ranges



Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly ComponentsConnection collar:

Connect the Actuator to the push/pull collar, when actuator applies force

to the connection collar pushes against the push/pull collar.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly ComponentsSlip links:

the push/pull collar applies pressure to the links, which are connected to the slip segments. The links move down, radially contracting the slip segments to engage the dies onto the outside diameter of the casing

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly ComponentsSlip segments :

Dies sit inside of the slip segments. when the actuator applies the links move down, radially contracting the slip segments to engage the dies onto the outside diameter of the casing.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


Spearhead:

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly ComponentsDies:

Dies engage onto the outside diameter of the casing. There different sizes if dies depending on the casing size

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly ComponentsSpear:

Is Down Hole fluid conductor, Connect Spearhead to the Housing.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

External Lower Drive Assembly ComponentsStop Bumper:

Is used to avoid any damage on casing box connection

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify


Ref: TP-L&D-6.2.2-41 Rev 0


Identify Mud Saver Function and Operation


Section 1: Identify

Mud Saver Function and Operation: mud saver valve is designed to reduce or eliminate the undesirable loss of fluid when making a connection and to save the rig time lost waiting for the Kelly hose to drain.

Placed inside of the Spear or Mandrel, the mud saver valve opens from pressure when the rig pumps are engaged, enabling circulation down

the drill string. The valve closes when circulation is stopped, trapping

the drilling fluid inside the CDS and Kelly hose, thus making drill string trips drier, faster, and safer.

Ref: TP-L&D-6.2.2-41 Rev 0


Identify Methods for Certification and Record Keeping


Methods for certification and record keeping

Section 1: Identify

http://intranet/BusinessUnit/NABU/Tubular%20Services%20Quality%20documents/1.2%20Job%20Packets/1.3%20Conventional/Conventional%20Casing%20Job%20Package%20V1.6.xlsx

Follow the link below to find the information needed for record keeping.

Ref: TP-L&D-6.2.2-41 Rev 0


Pipe tool compatibility with various pipe diameters

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

The external lower drive assembly is available in two different sizes to handle these casing

size ranges:



Caution: The yield strength capacity of the casing may be less than the capacity rating of the CDS.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

The internal lower drive assembly is available in six sizes to handle these casing size ranges:



• 7 to 7-5/8 in. (500 ton rating) (454 metric ton rating)




Caution: The yield strength capacity of the casing may be less than the capacity rating of the CDS.

Ref: TP-L&D-6.2.2-41 Rev 0


Identify Preventative Maintenance and CorrectiveMaintenance Activities

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

Preventive Maintenance:

The care and servicing by qualified personnel for the purpose of maintaining equipment in operating condition (must be performed before/after every job).

During the preventive maintenance must Inspect Test and Lubricate the following CDS Components:

• Threads

• Grapples (Underside) Internal CDS (ICDS)

• Slip Segments (Nipple on the back Side) External CDS (ECDS)

• Actuator Upper Bearings

• Actuator Lower Bearings

• Link Tilt Carrier

• Link Tilt Cylinders

• Low/High Actuator Pressure Test

• Spear

• Spearhead

• Service Loop

• HPU

• Shackles

• Elevators

• Control Panel

When the servicing for the external drive system is complete, reconnect the actuator and lower drive assembly.Label how much torque has been applied to tighten the connection.Ensure the spline lock is installed.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 1: Identify

Corrective Maintenance:Can be defined as a maintenance task performed to identify, isolate, and rectify a fault so that the failed equipment can be restored to an operational condition.

Components that must checked for damage:

• Connection Collar and cut-outs

• Push/pull Collar

• Slips Links

• Slips Segments

• Dies/Grapples

• Actuator

• Spearhead

• Packer Cup

• Bolts and Miscellaneous

• External body/Mandrel

• Spear

• Crossovers

• Service Loop

• Control Panel

• HPU

To ensure the equipment operates properly and to prevent downtime, check the pressure and temperature gauges, all fluid levels, and flow meters daily.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2Operate

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Torque and weight limitations of Internal/External CDS Tool assemblysize-specific.

• Operational Maintenance during operation / Lube schedule

• Pressure settings Open / Close

• Pipe CDS tool compatibility (e.g.. max opening)

• Reaming operations / pressure setting

• Assembly configurations to meet requirements of job

Ref: TP-L&D-6.2.2-41 Rev 0


Torque and Weight Limitations of Internal/External CDS Tool Assembly

Size-specific

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

When the lower drive assembly is shipped from the manufacturing shop, it is not tightened.

When it reaches its destination it must be tightened before operations begin. Ensure the mandrel is installed and the connection is correctly torqued, and that the spline lock is installed.

If the CDS will be used for drilling applications, ensure the torque limiting link tilt assembly (TESCO part number 860196 adjustable or 860195 non-adjustable) is installed.

Crossover Sub: Visually inspect the top and bottom connection threads and the bore for wear and

Corrosion

Die Lock Clamp: Visually inspect the dies for damage. Visually inspect the clamp body for damage, distortion or corrosion

It is CRITICAL that the actuator and the lower drive assembly (both internal and external) be tightened to a torque of 46,000 ft-lb (62 367 N·m) before the equipment is operated

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Apply pipe dope to the connection, then thread into the cross-over sub with the

top drive quill and make up the connection to the torque specifications for the tool

joint thread in use.

Recommended Torque:

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Ref: TP-L&D-6.2.2-41 Rev 0


Operational Maintenance During Operation / Lube Schedule

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Operational Maintenance during operation / Lube schedule:

To ensure the equipment operates properly and to prevent downtime, check the pressure and temperature gauges, all fluid levels, and flow meters daily.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


Actuator Grease Application:

1. Lockout all robotic functions and the top drive.

2. Pump grease slowly into the top grease nipple.

Note: Pump slowly so the grease does not pass by the seals.

3. Continue to pump grease until grease leaks out of the top grease vent. Monitor the grease at the vent for contamination.

4. Pump grease slowly into the bottom grease nipple.

Note: Gravity will slowly displace grease that is pumpedinto the bottom grease nipple.

Warning! Do not grease the actuator while the top drive is rotating.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


Actuator Grease Application:

Caution: Do not pump too much grease into the bottom grease nipple; the spring chamber could fill with grease. Over time, this will hinder the operation of the actuator.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


Elevator Lubrication Schedule:

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Operational Maintenance During Operation / Lube schedule:

Link Tilt Assembly Lubrication Schedule:

Ref: TP-L&D-6.2.2-41 Rev 0


Pressure Settings Open / Close

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

HP = flow rate (GPM) × pressure (PSI) / 1714

HP = 5.5 GPM X 2500 PSI /1714 = 8.02 HP

746 Watts = 1 HP

HP X 746 Watts/Voltage = Amps

Motor with 8 Optimum HP At 480 Volts:

8.02 HP X 746 Watts/ 480Volts = 12.74 Amps

HPU fuses = 15 Amps

HP Formula

Electric Motor 10HpMaximum Allowance 80%

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

The control panel for the CDS and the slips has been designed to combine the functions for convenience

• The gauges display apply and release pressures for the CDS and the slips.

• The lever controls allow the operator to function the CDS and slips.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Control Panel – Operation

The two CDS levers must be used at the same time to operate the tool; the levers are moved in opposite directions. This procedure also applies to the levers for the slips and the elevators

Caution: This safety feature is required for all CDS control panels. It is prohibited to try and change the fluid sequences that alter the position of the levers

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Operation Pressure Gauges.

The two gauges on the side of the control panel indicate the following:

• overall system pressure• pressure in the elevators

Caution: to eliminate hazards or equipment damage, make sure the supply lines are in the proper position

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Flow Control Switches OperationThese switches only need to be open when:

• dressing or undressing the equipment,• if there is a problem with the system, or• when making up shoe track of casing.

Ensure these switches are “closed” for the CDS and “closed” for the slips for the interlock system to work appropriately

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Flow Control Valve:

Allows free flow through the check valve portion and restricted flow through the

metering portion

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Pressure Reducing Valve:

Reduces pressure after the valve. Pressure before the valve remains at

system pressure

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Orifice 0.031:

If the pressure remains stable, the hoses are incorrectly connected or the orifice is clogged. Reconnect the hoses and clean

the orifice

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Quick Disconnect:

Does not allow flow when disconnected

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Pilot to Open Check Valve:

Works like a regular check valve until pilot pressure is applied, then the ball will unseat allowing oil to flow

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Pressure relief valve:

Relives pressure throughout the system (dumps to tank)

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

CONTROL PANEL

Directional Valve or Spool Valve These valves perform only three functions:• Stop fluid flow• Allow fluid flow, and• Change direction of fluid flow

Ref: TP-L&D-6.2.2-41 Rev 0


Reaming Operations / Pressure Setting

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Reaming Operation Pressure Setting:

For reaming purposes set the apply pressure at 1400psi

Ref: TP-L&D-6.2.2-41 Rev 0


Assembly Configurations to Meet Requirements of Job

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Internal Casing Drive System(ICDS) Assembly

The internal drive assembly is available in several sizes. These smaller sizes have nine grapples:• 4-1/2 in.• 5-1/2 in.These larger internal drive sizes have five grapples:• 7 to 7-5/8 in.• 9-5/8 to 11-7/8 in.• 13-3/8 in.•16 in.• 18-5/8 in.•20 in.Both the five-grapple and nine-grapple internal casing drive systems are assembled in the same way. For illustrations of the part names used in this chapter, refer to the Casing Drive System Parts Lists that was shipped with the unit.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Bumper Stop Bracket

• Slide the casing stop collar onto the mandrel.

• Secure the casing stop collar with appropriately sized lock washers and socket head caps crews where required, and apply Loctite #243.

• Slide the bumper onto the casing stop collar and snap into place.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Grapples Assembly and Actuator Connection

• Cycle the actuator into the open position. This will expose the pin-end of the actuator.• Apply thread compound to the pin-end of the actuator.• To ease further assembly, attach the mandrel to the pin-end of the actuator.

• Use a make-up/break-out tool to tighten the connection between the mandrel and the actuator with 46,000 ft-lb (62 367 N·m) of minimum torque. The limit however should not exceed 63,000 ft-lb (85 420 N·m).

Warning! The make-up/break-out tool must meet torque requirements. Qualified personnel ONLY are to operate the make-up/break-out tool

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Grease all slide areas of the mandrel with grease.• Prepare the grapples for installation. The 4-1/2 in. and 5-1/2 in. sizes require nine grapples; all other

sizes require five grapples. To prepare the grapples:• Ensure that the required number of grapples are available to be installed.• Ensure that the weight of the grapples corresponds correctly with the weight of casing.• Ensure that all the grapples are part of the same set by checking the serial numbers; the numbers

should be sequential

Warning! The larger size grapples (i.e. 9-5/8 in. and larger) are extremely heavy. Use proper lifting techniques and overhead equipment as needed to move them

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Insert the top of one grapple into the cut-out on the mandrel.• Slide the grapple under the bumper until the ramp profile on the back of the grapple rests evenly

against the corresponding ramp profile on the mandrel.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Splined Connection Lock Torque-up Procedure

• Before connecting the drive to the actuator, remove the lock collar and cover the splines on both the actuator and drive with Kopr-Kote. Replace the lock collar as shown

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Make-up the connection between the drive and actuator.• Place the CDS actuator and the mandrel (or body of the external tool) on top of the Breakout Vise as

shown.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Ensure the splined connecting lock collar is in position as shown in the following figure. • Use wire to secure the lock collar in place as shown in the following figure. This will keep it out of the

way during the torque-up procedure.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Ensure the splined connecting lock collar is in position as shown in the following figure. • Use wire to secure the lock collar in place as shown in the following figure. This will keep it out of the

way during the torque-up procedure.

Use the standard make-up procedure as described in the “Make-up of Tool” section of the Breakout Vise manual

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• When the required pressure (Refer to Tag on Breakout Vise) is reached, release all pressure from the system.

• Remove the wire on the splined connecting lock collar, as shown.

Warning! Ensure all pressure is released from the system

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• If the lock collar they are aligned it should slide easily over the splines on the mandrel or external . .drive body. If this happens, this procedure is complete.

• If they are not aligned, note how much they will have to move to become aligned.• The following figure shows splines out of alignment.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• The splined connecting lock collar has two ears, one on each side. Attach two bungee cords, one to each ear. Ensure the tension created by the bungee cords will pull the splined connecting lock collar towards the mandrel or drive body when the splines are aligned.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Split Collar and Connection Collar Assembly

• the split collar has a roll pin on the inside and the out side. The roll pins prevent the grapples from inadvertently turning inside split collar.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Install the first half of the split collar onto the mandrel below the bumper and over the top of the grapples

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate


• Install the second half of the split collar. Again, ensure that the roll pin on the split collar aligns evenly with the roll pin on the actuator.

• Install four 1/2 in. Hi-Collar lock washers and four 1/2 in. × 1-1/2 in. caps crews onto the split collar to join and lock the two halves together. Apply 75 ft-lb (101.69 N·m) of torque to tighten the caps crews.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

• Install the first half of the connection collar.

• Note: The roll pins should be aligned.

Ref: TP-L&D-6.2.2-41 Rev 0



Section 2: Operate

• Install the second half of the connection collar.• Install four 1/2 in. Hi-Collar lock washers and four 1/2 in. x 1-1/2 in. caps crews onto the connection

collar. Apply 75 ft-lb (101.69 N·m) of torque to tighten the caps crews.• Install four cotter pins into the connection collar below the four caps crews

• Note: The roll pins should be aligned.

Ref: TP-L&D-6.2.2-41 Rev 0



Section 2: Operate

Spearhead Assembly

• Ensure that the spearhead is clean and free of any debris.• Install one N90-231 O-ring onto the spearhead.• Install a protector sleeve onto the spearhead.• Install a retaining ring onto the spearhead.• Apply a light film of grease to the spearhead and the protector sleeve.• Slide a packer cup onto the spearhead.• Slide a seat onto the spearhead. • Install two remaining N90-231 O-rings onto the spearhead. • The spearhead is now assembled and ready to be connected to the mandrel

IMPORTANT: we strongly recommend the continued usage of TESCO ULTREX lubricants, unless otherwise specified.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Spearhead Assembly

• Thread the spearhead assembly onto the mandrel.• The threads of this connection are very fine. Take special care not to misalign the connection and

damage the threads.• Use mechanical aid on any spearheads larger than 7 in. as they are too heavy to move by hand.• Insert a long bar through holes on bottom of the spearhead to tighten the spearhead assembly to the

mandrel. Apply 600 ft-lb (813.49 N·m) of torque to tighten.

Note: To calculate the torque, multiply the length by the force. For example, to achieve 600 ft-lb of torque on the spearhead, insert one end of a 6 ft. long bar through the holes on the bottom of the spearhead and apply 100 lb of force to the other end of the bar

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

External Casing Drive System(ECDS) Assembly

There are two different external lower drive assemblies:

• one is for use with the 3-1/2 in. to 7 in. sized casing.

• one is for use with the 7 in. to 8-3/4 in. sized casing

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Primary Assembly

• Slide the push/pull collar onto top of the body.

• Slide the splined lock onto the top sub of the actuator.

• Ensure that the actuator is functioned to the RELEASE (open) position.

• Apply thread compound to all connections.

• Thread the body into the bottom of the actuator. Apply 46,000 ft-lb (62 367 N·m) of torque to tighten.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Primary Assembly

• Ensure that the split pins on the push/pull collar align with split pins on the actuator.

• Ensure that the link pin holes into which the link pins will be installed are aligned with the holes in the body.

• Apply a small amount of oil or a very small amount of white lithium grease to the surface of one slip.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Primary Assembly

• Slide one die into a slip

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Primary Assembly

• Place one spring plate on top of the slip; align the dowel holes.

• Place one retainer onto the top of the spring plate.

• Install four 1/2 in. hi-collar lock washers and four 1/2 in. × 1-3/4 in. caps crews through the retainer and the spring plate and into the slip. Apply 75 ft-lb (101.69 N·m) of torque to tighten the caps crews.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Primary Assembly

• Use a link pin to attach the link to the slip.

• Repeat steps 7to 13for each of the two remaining slips.

• Install three cotter pins into the three link pins.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Primary Assembly

• Use eight 1/2 in. × 1-3/4 in. caps crews and eight 1/2 in. lock washers to secure the torque arrest block to the inside of the body. Apply 75 ft-lb (101.69 N·m) of torque to tighten the cap screws.

• Repeat Step for each of the two remaining torque arrest blocks.• Insert one snap ring onto each one of the cap screws that are securing the three torque arrest blocks.

Ensure that the flat edge of each snap ring is facing the outside and that each snap ring is seated properly.

• Grease the back of all slips with grease

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Primary Assembly

• Feed a rope down through top of the body and attach one end to the top of one link

• Pull this rope to install and guide the slip into place inside the body.

• Remove the rope from the link.

• Repeat steps for each of the remaining two slips.

• Install three link pins through the holes in the push/pull collar and through the corresponding holes in each of the three links to secure the links to the push/pull collar.

•• Install three cotter pins into the three link pins. Insert the bumper into the body.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Push/Pull Collar & Connection Collar Assembly

• Install the two halves of the connection collar onto the bottom of the actuator.

• Loosely secure two halves of the connection collar together by using four 1/2 in. Hi-Collar lock washers and four 1/2 in. × 1-3/4 in. cap screws

• .• Use chain tongs to slowly turn the connection collar until it falls into place on the top of the push/pull

collar. Both should be aligned at this point.

• Ensure that the split pins on the push/pull collar align with the split pins on the actuator.

• Apply 75 ft-lb (101.69 N·m) to tighten the four caps crew into the connection collar.

• Install four cotter pins into the four caps crews.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Float Assembly

• Install one O-ring 228 into the groove in the top of the float valve housing.

• Slide the float valve into the float valve housing.

• Install a retaining ring onto the bottom of the float valve.

• Insert the assembled float valve into the following:

top of the spearhead mandrel adapter if this is an internal drive. bottom of the mandrel if this is an external drive.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Spearhead Assembly

• Install two O-rings 231 onto the top of the mandrel adapter.

• Install two O-rings into the packer cup.

• Install two O-rings 231 into the top of the spacer.

• Slide the packer cup onto the mandrel adapter.

• Slide the spacer onto the mandrel adapter.

• Slide the spearhead onto the mandrel adapter.

• Secure the spearhead into place on the mandrel adapter by using eight washers • and eight retainer screws

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Final Assembly

• Install two O-rings N90-2-339 onto the top of the mandrel.

• 2. Thread the mandrel into the body and apply 800 ft-lb (1084 N·m) torque to tighten.

Caution: Do not exceed 1,500 ft-lb.Caution: The threads on the male end of the mandrel are very fine. Use caution when pushing the mandrel through the bumper and into the body.Caution: Use mechanical aid on any spearheads larger than 7 in. as they are too heavy to move by hand.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 2: Operate

Final Assembly

• Thread the spearhead assembly onto end of the mandrel.

• Apply 600 ft-lb (813 N·m) torque to tighten the spearhead assembly to the mandrel.

Note: To calculate the torque, multiply the length by the force. For example, to achieve 600 ft-lb of torque on the spearhead, insert one end of a 6 ft. long bar through the holes on the bottom of the spearhead and apply 100 lb of force to the other end of the bar.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 3:Install, Remove, Maintain

Ref: TP-L&D-6.2.2-41 Rev 0


Section 3: Install, Remove, Maintain


• Describe the procedures used to install and remove Internal/External CDS Tools from The rig top drive

• Describe the procedure to install internal/external body onto Actuator

• Describe the procedures used to maintain external body, inspect, record And file certifications

• Methods used to install a mud saver valve into a CDS tool

• Methods used to ensure correct direction of flow through mud saver valve

Ref: TP-L&D-6.2.2-41 Rev 0



RIG UP:

The rig up procedure can vary depending on the system onto which the CDS is installed.

Inspect the drive assembly before rig up to determine the

appropriate accessories and equipment as determined in the Pre-Job Checklist.

Refer to “Pre-Job Considerations” on page 3 for more information.

Ref: TP-L&D-6.2.2-41 Rev 0



NOTICES AND WARNINGS

WARNING ! ONLY QUALIFIED PERSONNEL MAY OPERATE OVERHEAD EQUIPMENT.

WARNING ! SOME COMPONENTS OF THE CDS ARE EXTREMELY HEAVY. WHEN LIFTING USE: 1) PROPER LIFTING TECHNIQUES

2) OVERHEAD EQUIPMENT AS NEEDED (RATED APPROPRIATELY FOR TASK)

CAUTION : THE THREADS ON THE MANDREL/SPEARHEAD CONNECTION ARE VERY FINE. TAKE CARE NOT TO MISALIGN THE CONNECTION AND DAMAGE THREADS.

WARNING ! THE LINK TILT ASSEMBLY IS DESIGNED TO LIFT A SINGLE JOINT OF CASING, IN CERTAIN CASES THE LINK TILT ASSEMBLY CAN BE USED TO HOLD LOADS WITH A MAXIMUM

CAPACITY OF 10,000 lbs. USE EXTREME CAUTION

WARNING ! USE EXTREME CAUTION WHEN CHANGING SLIPS IN THE LOWER DRIVE ASSEMBLY AS HYDRAULIC FORCE LINGERS INSIDE ASSEMBLY. DO NOT PLACE HANDS INSIDE HOUSING.

Ref: TP-L&D-6.2.2-41 Rev 0




DANGER ! ENSURE THAT ACTUATOR HYDRAULIC OPEN PRESSURE IS SET PROPERLY (700- 800 PSI). THIS WILL ENSURE THAT THE ACTUATOR DOES NOT OPEN ACCIDENTALLY.

KEEP RELEASE PRESSURE AS LOW AS POSSIBLE

WARNING : BEFORE BEGINNING OPERATION, REALIZE THAT THERE ARE LIMITS TO ALL PIECES OF EQUIPMENT INVOLVED IN THIS OPERATION: CROSSOVER SUB, TOP DRIVE SLIPS, CASING SIZE, GRADE, ELEVATORS, etc. CAREFULLY CONSIDER ALL LIMITING FACTORS BEFORE BEGINNING.

WARNING ! THE SLINGS AND SECUREMENTS USED TO LIFT THE CDS MUST BE CERTIFIED AND HAVE THE APPROPRIATE LOAD RATING. ENSURE THE CDS IS BALANCED AND LEVEL WHEN IT IS LIFTED.

WARNING ! ATTACH CERTIFIED SLINGS AND SECUREMENTS TO THE PROPER PAD EYES ON THE TRANSPORT STAND WHEN USING OVERHEAD EQUIPMENT.

Ref: TP-L&D-6.2.2-41 Rev 0




WARNING ! SLIP SEGMENTS OF EXTERNAL DRIVES AND LARGE GRAPPLES OF INTERNAL DRIVES ARE EXTREMELY HEAVY. USE A SLIP SEGMENT WINCH OR A TUGGER MUST BE USED TO REPLACE THESE COMPONENTS. USE PROPER LIFTING TECHNIQUES AND OVERHEAD EQUIPMENT AS NEEDED TO MOVE THESE COMPONENTS.

BEWARE : DURING RIG UP, ENSURE THAT THE CONNECTION COLLAR ROTATES WITH THE TOP DRIVE. OTHERWISE THE GRAPPLES AND SPLIT COLLAR WILL WEAR PREMATURELY.

CAUTION : IF RETAINER RING IS INSTALLED, DO NOT REVERSE HOSES WHILE CDS IS IN WELL BORE.

CAUTION : THE FUNCTION TEST OF THE ACTUATOR MUST NOT BE DONE IN WELL BORE.

CAUTION : AS PER LUBRICATION SECTION OF THE MANUAL, IT IS CRITICAL TO GREASETHE BACK OF THE GRAPPLES EVERY TENTH JOINT. IF GREASE IS NOT APPLIED AND THE TOOL IS ALLOWED TO RUN DRY, THE FRICTION MAY CAUSE THE GRAPPLES TO STICK TO THE MANDREL AND THE TOOL WILL NOT RELEASE.

Ref: TP-L&D-6.2.2-41 Rev 0



CAUTION : THE CROSSOVER SUB WHICH CONNECTS THE CASING DRIVE SYSTEM TO THE TOP DRIVE IS CONSIDERED OVERHEAD EQUIPMENT. DO NOT CONFUSE CROSSOVER SUB WITH OTHER SUBS FROM THE TOP DRIVE. DO NOT USE TOP DRIVE SUBS.

CAUTION : CHECK THE LOAD RATING OF THE SINGLE JOINT ELEVATORS BEFORE OPERATING LINK TILT.

CAUTION : ON LINK TILT ASSEMBLY, USE ONLY CERTIFIED SHACKLES AND CERTIFIED OVERHEAD EQUIPMENT.

WARNING ! IT IS THE RESPONSIBILITY OF THE CASING DRIVE SYSTEM SUPERVISOR TO DELIVER OPERATION INSTRUCTIONS AND BE ON THE DRILL FLOOR AT ALL TIMES DURING CDS OPERATION.

DANGER ! THE ACTUATOR IS UNDER SPRING PRESSURE. USE EXTREME CAUTION WHEN ASSEMBLING OR DISASSEMBLING THE ACTUATOR.

DANGER ! USE PROPER FALL PROTECTION WHILE WORKING AT OR OVER 6 ft. ABOVE THE FLOOR.

Ref: TP-L&D-6.2.2-41 Rev 0



Use the following as a checklist for common rig up and operational problems:

• Check that the cross over sub diameter is such that it will fit through the grabber box opening.

• Ensure that the cross over sub is long enough to clear the top of the grabber box.

• Verify that the bolt holes on the anti-rotation bracket will align with the bolt holes on the bottom of the grabber box once the pipe guide is removed.

• Make sure you have the proper connection lock clamps available.

• Make sure the hydraulic fittings are compatible from the drive to the actuator. e.g.. (non Tesco top drive)

Ref: TP-L&D-6.2.2-41 Rev 0



Remove the pipe guide, elevators and the lock connection clamp (Tesco top drive).

Breakout the existing saver sub.

Pipe Guide Elevators Lock Connection Clamp

Ref: TP-L&D-6.2.2-41 Rev 0



Use the proper lifting nubbin to pick-up the CDS and move it to the drill floor (if it is not moved in the transport stand)

Ref: TP-L&D-6.2.2-41 Rev 0



Adjust the slings around CDS to accommodate weight of approximately 7,000 lb. (3175 kg)

Move CDS to the catwalk. Ensure the grapple area does not get damaged

Ref: TP-L&D-6.2.2-41 Rev 0



Remove any tarp or metal protector surrounding grapples

Place CDS in mouse hole; Do not to damage grapples (internal drive only)

If the CDS is too large for the mouse hole, place CDS into rotary table

If using hole center, set slips on CDS as close to actuator as possible.

*Do not set slips on grapples*

Ref: TP-L&D-6.2.2-41 Rev 0



• Place bushings in rotary table (external measures 17”)

• Place external drive on rotary table while holding CDS steady

• Apply thread compound to the pin-end of the CDS

• Apply thread compound to the pin-end and seal face of crossover sub

Ref: TP-L&D-6.2.2-41 Rev 0



Place Anti-rotation Bracket Over the Top of the CDS

Ref: TP-L&D-6.2.2-41 Rev 0



Position the Top Drive Over the CDS

Ref: TP-L&D-6.2.2-41 Rev 0



Lower the top drive over CDS. Do not damage seal area of CDS

Ref: TP-L&D-6.2.2-41 Rev 0



Lower the grabber down and clamp onto top of CDS

Close grabber and screw into CDS

Torque connection according to specifications (table below)

Ref: TP-L&D-6.2.2-41 Rev 0



Lower the grabber enough to install a connection lock clamp on both connections of crossover sub

Ref: TP-L&D-6.2.2-41 Rev 0



Attach the anti-rotation bracket to the bottom of the grabber and install safety chain

Ref: TP-L&D-6.2.2-41 Rev 0



RIG DOWN:

Rig Down Into the Transport Stand on the Rig Floor.• Install the final casing joint (job is finished).

• Ensure the rig floor is clean and free of any obstruction, debris, tools or equipment

• that may cause a tripping hazard or slip hazard.

• Function the link tilts to the FORWARD position while lowering the CDS to the

• rig floor.

• Remove the anti-rotation bracket and safety slings attached to the top drive.

• Remove everything attached to the anti-rotation bracket.

Ref: TP-L&D-6.2.2-41 Rev 0



RIG DOWN:

Rig Down Into the Transport Stand on the Rig Floor.• Position the links to touch the rig floor and remove the elevator from the links.

• Shorten the links and take out the pins, then shorten the links with the help of other crew members (minimum three rig personnel) to the shortest distance possible.

• Re-install the pins and ensure the pins are in the correct position and tight enough so that they do not become dislodged.

• Set the slips on the casing.

• Function the tool to release the casing, then extract it from the casing.

Ref: TP-L&D-6.2.2-41 Rev 0



RIG DOWN:• Lift up the top drive / CDS to acceptable working height above rig floor level.

• Lift the rig-up stand / frame to the rig floor.

• Place the rig-up stand / frame in the vertical position.

• Lower the CDS to its rig-up stand / frame.

• Push the frame towards the CDS.

• Lock the clamps, ensuring they are properly secured and tightened.

• Break out the CDS from the top drive by disconnecting the CDS crossover sub

Note: The links may swivel as the anti-rotation bracket and safety slings have been removed. Take caution and avoid being too close to the links.

Note: The rig-up stand / frame should be placed on bars / beams / pipesNote: Ensure the CDS is fitted to its frame and ensure the CDS fits the grooves on its clamp.

Ref: TP-L&D-6.2.2-41 Rev 0



RIG DOWN:• Lift up the top drive.

• Place a thread protector on the CDS.

• Lower the links to its lock frames and place the pins.

• Ensure the links are secured proper land locked in their lock frames.

• Stop the hydraulic power unit (HPU) and disconnect the hydraulic hoses from the CDS.

• Release the pressure on the hoses by moving the lever on the console.

• Ensure the CDS is properly secured on its frame, all clamps are properly locked, and pins are in place and secured.

• Ensure no object can drop during the lifting job. [continued on the next page]

• Attach two leg slings on the frame pad eyes.

• Lay down the CDS and frame.

Ref: TP-L&D-6.2.2-41 Rev 0



RIG DOWN in the Rotary Table or the Casing Stump:• Install the final casing joint (job is finished).

• Ensure the rig floor is clean and free of any obstruction, debris, tools or equipment that may cause a tripping hazard or slip hazard.

• Function the link tilts to the FORWARD position while lowering the CDS to the rig floor.

• Set the slips on the casing.

• Remove everything attached to the anti-rotation bracket.

• Remove the anti-rotation bracket and safety slings attached to the top drive.

• Position the links to touch the rig floor.

• If extendable links are used, shorten the links and take out the pins, then shorten the links with the help of other crew members (minimum three rig personnel) to the shortest distance possible.

• Re-install the pins and ensure the pins are in the correct position and tight enough so that they do not become dislodged

Ref: TP-L&D-6.2.2-41 Rev 0



RIG DOWN in the Rotary Table or the Casing Stump:• Function the tool to release the casing, then extract it from the casing.

• Break out of the connection to the top drive and leave the CDS tool in the stump of the casing or on the C plate in the rotary table.

• Hoist the top drive out of the way and install a lifting nubbin into the top of the tool.

• Attach rig hoisting equipment (tugger line or crane line).

• Hoist the CDS tool out of the casing and install a lay down line through the single joint elevators with sling to grapples OR to the external body area.

• Clear the area for unnecessary personnel as the CDS may swing or links may swivel. Take caution and maintain a safe distance.

• Stop the HPU, and disconnect the hydraulic hoses from the CDS. Release the pressure on the hoses by moving the lever on console. Ensure no object can drop during lifting or lowering.

• At the same time, pull the CDS tool out the V-door and lower the rig hoisting equipment, laying the tool into the transport stand or on the catwalk for later removal for transport.

Ref: TP-L&D-6.2.2-41 Rev 0



RIG DOWN in the Rotary Table or the Casing Stump:• Secure the console, hoses and other equipment in a safe position.

• Lift the CDS and place on a transport stand / frame on another location.

• Position the CDS so that it is fitted to its frame and the CDS fits the grooves on its clamp.

• Lock the clamps or ratchet straps and ensure they are properly secured and tightened.

• Remove the lifting sub / nubbins from the CDS.

• Place a thread protector on the CDS.

• Attach two leg slings on the frame pad eyes.

• Position the CDS and transport frame in a location where it will be easy to lift

Note: In conditions when the links are not completely fitted to their lock frame, use the bypass hose to lower the links by releasing pressure in their cylinders

Ref: TP-L&D-6.2.2-41 Rev 0



Procedures to install external body onto Actuator

When the lower drive assembly is shipped from manufacturing it is not

torqued. Prior to operation it must be torqued. A tag on the lower drive

unit is now being applied when it leaves the manufacturing shop to

remind the end user to torque the assembly connection before operation.

Ref: TP-L&D-6.2.2-41 Rev 0



Use the crane to place the actuator in the vice. Adjust the trolley stand so it is supported evenly in at least two points.

Wrap the chain around the top sub and secure the chain nut into the chain saddle.

Ref: TP-L&D-6.2.2-41 Rev 0



For large adjustment of the chain length locate the chain locking mechanism on the petol tong vice

For final adjustment use a bar to tighten the chain nut into the chain saddle.

Ref: TP-L&D-6.2.2-41 Rev 0



Dope the threads of the pin end of the top sub and the sealing face.

Lift the mandrel into place using the crane and support it with a trolley stand. Hand tighten the mandrel onto the actuator with a chain tong.

Ref: TP-L&D-6.2.2-41 Rev 0



Wrap the chain around the tool and secure the chain nut in the chain saddle in the same manner as the petal vice.

Lift the petol tong with the crane and place it on the mandrel.

Ref: TP-L&D-6.2.2-41 Rev 0



Retract the cylinder to tighten the connection between the tool and the actuator. Monitor the pressure gauge on the hydraulic source to tighten the connection to the required torque.

Ref: TP-L&D-6.2.2-41 Rev 0



Warning! Monitor the pressure gauge on the hydraulic source: Ensure that the torque does not exceed the maximum torque when tightening components of the tool.

Ref: TP-L&D-6.2.2-41 Rev 0


Procedures used to maintain internal/external body, inspect, record And file certifications


http://intranet/sites/NABU/NABU%20Contolled%20Documents/TS/04%20Forms/Conventional%20Casing%20Job%20Package%20V1.6.xlsx?web=1

Follow the link below to find the information needed for record keeping.

Ref: TP-L&D-6.2.2-41 Rev 0


Non-destructive Testing And Inspection Requirements


Ref: TP-L&D-6.2.2-41 Rev 0



COMPONENT INSPECTION CRITERIAEXTERNAL LOWER DRIVE ASSEMBLY

Ref: TP-L&D-6.2.2-41 Rev 0



Inspection Categories

The four inspection categories as per API 8Bare outlined in the following table.

Ref: TP-L&D-6.2.2-41 Rev 0


Section 4: Troubleshoot, Repair

Ref: TP-L&D-6.2.2-41 Rev 0



Environmental Factors

Cold Environment

If operating the Casing Drive System in a cold environment, consider the possible effects of ice and snow on the equipment.

• If there is any ice on the outside of the casing when using the external lower drive assembly, the dies might slip.

• If the dies slip while a connection is being tightened, the surface of the dies will be scrubbed prematurely.

• If ice has accumulated on the dies, they might slip while being picked up on the hook load. Consequently, they could slide in the connection collar and possibly damage the slip segments.

• Use caution during operation if a joint in the rotary table is over-filled and mud is frozen to the outside of the joint.

Ref: TP-L&D-6.2.2-41 Rev 0




Dirty Environment

If working with a CDS in a dirty environment, be sure to take the time to clean the dies.

• Clean away any excess grease build-up and/or varnish on the outside of the joint.

• If the dies slip while a connection is being tightened, the surface of the dies will be scrubbed prematurely.

• If debris has accumulated on the dies, they might slip while being picked up on the hook load. Consequently, they could slide in the connection collar and possibly damage the slip segments.

Ref: TP-L&D-6.2.2-41 Rev 0




Unfreezing and Cleaning External Tools

To clean and unfreeze external tools without pulling out the dies use a wire filing brush.

• Install three wire files on a 36”×2” flat iron.

• Rub short stiff bristles of wire files on the dies.

• Repeat process every 5 to 10 joints

Ref: TP-L&D-6.2.2-41 Rev 0



Paint Marks

Use a paint marker to make it easier to use the CDS both during daytime and nighttime operation. Additional lighting may be required for night time operation.

• Apply a paint mark on the outside of the casing to make it easier to stop the lower drive assembly at the right place before energizing.(i.e., the casing should be touching the stop bumper).

Apply the mark to indicate the point at which the elevators should stop (approximately 80 in. on the external lower drive assembly. The distance between the stop bumper to the bottom of the external lower drive assembly is 41 in.). Refer to Figure on next slide.

• Apply a small amount of paint to the connection collar of the internal lower drive assembly to make it easier to see at night.

Ref: TP-L&D-6.2.2-41 Rev 0



Paint Marks

Ref: TP-L&D-6.2.2-41 Rev 0



Stuck GrapplesIf the grapples become stuck, unscrew the internal CDS from the stump.Follow the procedure below:

1. Put a thread protector on the bottom of the joint.

2. With just the single joint of casing in the CDS, set the RELEASE pressure on the hydraulics to 1500 psi.

3. Confirm that the RELEASE lever is in the RELEASE position.

4. Gently spud the casing joint into the floor; very little force is necessary.

5. If the joint is shouldered up against the stop bumper, cut away the rubber on the stop bumper. If the joint is not shouldered up, go to the next step.

6. Release the CDS and lay the joint down.

7. Inspect the lower drive assembly and the joint for wear and/or damage.

8. Apply grease to the back of the grapples.Ref: TP-L&D-6.2.2-41 Rev 0



Grapples Will Not Retract

If the grapples do not retract fully on the up-stroke, inspect the CDS to isolate the cause.

To temporarily resolve the problem, install an O-ring around the grapples at the die area.

Alternatively, if no O-rings are available, apply a few lengths of electrical tape around the grapples at the die area. This will ensure that the grapples remain tight until the CDS can be inspected and/or serviced..

Caution: After completing cementing operations, trapped pressure inside the casing may prevent the actuator from retracting the grapples or dies. This may appear to the operator as actuator failure.

Ref: TP-L&D-6.2.2-41 Rev 0



ICDS Actuator Failure

If the actuator fails during a job with the internal lower drive assembly and it cannot be removed, follow the procedure below:

1. Set the casing in the slips.

2. Lessen the weight of the drive assembly on the casing.

3. Remove the connection collar.

4. Place a sling around the bottom of the split collar.

5. If possible, lower the top drive while pulling up on the sling. If the top drive cannot be lowered, pull up on the sling; keep the actuator level.

6. Grapples will pull to the RELEASE position.

7. Lift up on the top drive and the sling at the same time.

8. Slack off on the sling to allow the grapples to reset.

Ref: TP-L&D-6.2.2-41 Rev 0



ECDS Actuator FailureIf the actuator fails during a job with the external lower drive assembly and it cannot be removed, follow the procedure below.

1. Set the casing in the slips.

2. Reduce the weight of the drive assembly on the casing.

3. Remove the connection collar.

4. Place a sling around the push/pull collar.

5. If possible, lower the drive assembly while pulling up on the sling. If the drive assembly cannot be lowered, pull up on the sling; keep the actuator level.

6. The slips should pull to the RELEASE position. If they do not pull into the RELEASE position, remove the link pins and lift up on one slip segment at a time.

7. Lift up on the drive assembly and the sling simultaneously.

8. Slack off on the sling to allow the grapples to resetRef: TP-L&D-6.2.2-41 Rev 0


QUESTIONS !!!!

Ref: TP-L&D-6.2.2-41 Rev 0