Field Service for Sleeve Bearing Track {4169, 4170, 4171, 4174, 4175} Caterpillar

Caterpillar Products

Machines with Sleeve Bearing Track

Introduction

© 2018 Caterpillar All Rights Reserved. This guideline is for the use of Caterpillar dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law. Information contained in this document is considered Caterpillar: Confidential Yellow.

This Undercarriage Reconditioning Bulletin contains the necessary information to allow a dealer to establish a parts reusability program. Reuse and salvage information enables Caterpillar dealers and customers to benefit from cost reductions. Every effort has been made to provide the most current information that is known to Caterpillar. Continuing improvement and advancement of product design might have caused changes to your product which are not included in this publication. This Undercarriage Reconditioning Bulletin must be used with the latest technical information that is available from Caterpillar.

For questions when using this document, work with your Dealer Technical Communicator (TC).

To report suspected errors, inaccuracies, or suggestions regarding this document, submit a form for feedback in the Service Information System(SIS Web) interface.

Summary

This bulletin contains information regarding Caterpillar Sleeve Bearing Track. Sleeve Bearing Track was made available in 2002for the D11T/R/N Track-Type Tractor. This track link assembly is designed to address galling from contact of the track pin and bushing by incorporating an additional floating component of the sleeve bearing between the track pin and the bushing. Galling from the track pin that contacts the bushing is the major cause of failure of the track components of D11 track. Sleeve Bearing Track utilizes many of the existing track parts. The track links, track pins, thrust rings, retaining rings, plugs, and stoppers remain unchanged. The same basic track bushing is used in Sleeve Bearing Track. However, the ends are counterbored to accept the sleeve bearing. There are specific guidelines that must be followed to service Sleeve Bearing Track.

Illustration 1	g01158988
Sleeve Bearing Track

The information in this bulletin describes the tooling that will be used and the required service procedures. It is important to use the correct tooling. Follow each step to ensure that each track joint has minimum end play and maximum service life.

A list of important references and training materials is shown below. The operator of the track press should become familiar with this material for training prior to servicing Sleeve Bearing Track.

Safety

Illustration 2	g02139237

Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly.

This bulletin may contain hazardous steps. A safety alert symbol like the one below is used to call attention to a hazard.

Warning messages identify a specific, imminent, latent, hazard that has a reasonable probability of resulting in personal injury or death if the warning is ignored.

Illustration 3	g03186216
Example warning

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Do not attempt to disassemble or assemble this machine until you read and understand the disassembly and assembly instructions. Improper disassembly and assembly procedures could result in injury or death.

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Inspect all threaded components before use. Damaged threads may fail under hydraulic pressure. Broken threads may release flying objects that are propelled with great force. Personal injury or death can occur if struck by flying objects.

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Do not stand near the hydraulic press while the press is in operation. A component that slips or breaks under pressure may fly into the air with great force. Personal injury or death can occur if struck by flying objects.

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The machine must be on a level, hard surface before a separation of the track is made. Any time a separation of both tracks is made, the machine must have blocks correctly positioned so the machine will not move.

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The machine must be on a level, hard surface before a separation of the track is made. Any time a separation of both tracks is made, the machine must have blocks correctly positioned so the machine will not move.

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Personal injury can result from grease under high pressure. The adjuster cylinder for the track is under high hydraulic pressure. Grease under high pressure can cause injury. Do not visually inspect the adjuster to see if grease is released when the valve is opened. Check the rod to see that it moves to the rear into the front support on the track roller frame.

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Keep away from the front of the machine when the track is pushed off the final drive. A minimum distance of 7.6 m (25 ft) is needed in front of the track to permit the track to move out onto the floor.

Canceled Part Numbers and Replaced Part Numbers

This document may not include all canceled part numbers and replaced part numbers. Use NPR on SIS for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.

References

Reference: Undercarriage Reconditioning Guide, SEBF8599

Reference: Undercarriage Reconditioning Bulletin, SEBF8558, "Guideline for Reusable Track Parts"

Reference: Undercarriage Reconditioning Bulletin, SEBF8553, "Reusability Guidelines and Installation Procedures for Split Master Links"

Reference: Undercarriage Reconditioning Bulletin, SEBF8562, "Procedures and Guidelines for Cleaning Phosphate Coated Track Pins"

Reference: Undercarriage Reconditioning Bulletin, SEBF8554, "Track Press Assembly Specifications Decals"

Reference: Undercarriage Reconditioning Bulletin, SEBF8594, "Nitrogen Pressure Test"

Reference: Undercarriage Reconditioning Bulletin, SEBF8566, "Caterpillar Track Data Charts"

Reference: Undercarriage Reconditioning Bulletin, SEBF8577, "Oil Volumes for Track Link Assemblies"

Reference: Shop Repair of Positive Pin Retention Track, PEVN4329

Reference: Tool Operating Manual, NEHS0650, "Caterpillar Track Press Manual"

Reference: Tool Operating Manual, NEHS0826, "Caterpillar 300 Ton Track Press Manual"

Reference: Tool Operating Manual, NEHS0803, "Caterpillar 375 Ton Track Press Manual"

Reference: Tool Operating Manual, NEHS0830, "Caterpillar Track Torque Wrench"

Reference: Servicing Handbook, PEKP9400, "Caterpillar Track Service Handbook"

Reference: Parts Sales Kit, PECP3003

Reference: Catalog, NENG2500, "Dealer Service Tool Catalog"

Reference: See Testing and Adjusting for your machine.

Reference: See Disassembly and Assembly for your machine.

Reference: See the Operation and Maintenance Manual for your machine.

Required Tooling

Sleeve Bearing Track Servicing Guidelines

Always monitor the force of the track press during the service procedures of Sleeve Bearing Track. Follow instructions for the press or calculate the tonnage of the press.

Do not exceed the recommended track press force for D11 track assembly. If the maximum force for the D11 track is exceeded, the sleeve bearing will fracture.

Always reassemble Sleeve Bearing Track with thrust rings that are coated with 9W-9621 Ring Group. Refer to Illustration 33.

Do not exceed the recommended track press force to unlock the track joints.

Carefully follow instructions for examination of the cleaned bushing. Carefully follow the instructions to inspect the sleeve bearings. Refer to Illustration 37,38, and 39.

Do not ignore the inspection procedures for Sleeve Bearing Track.

Always ensure that the track pin is free to rotate after pressing the bushing into the link bore.

Do not consider rotation of the sleeve bearing to be necessary after pressing the bushing into the link bore as long as the track pin rotates freely. Rotation of the sleeve bearing will occur under load.

Preparation for Removal of the Track Joint

The repair of the damaged track joint can be performed on the tractor or on the ground.

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Illustration 4	g01176658
Field repair of Sleeve Bearing Track

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Illustration 5	g01159309
(1) Location of the dry joint

1. If the repair will be performed on the tractor, position dry joint (1) above the front track roller frame.

2. If the repair will be performed on the ground, move the track until the master track link is in alignment above the centerline of the rear idler.

   Note: The procedure in this guideline repairs the damaged track joint on the ground.

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   Illustration 6	g01159329

3. Remove five of the track shoes that are next to the dry joint.

   Note: Use Tooling (A) to remove the track bolts.

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   Illustration 7	g01179354
   (2) Track adjuster cover

4. Remove cover (2).
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   Personal injury can result from grease under high pressure. The adjuster cylinder for the track is under high hydraulic pressure. Grease under high pressure can cause injury. Do not visually inspect the adjuster to see if grease is released when the valve is opened. Check the rod to see that it moves to the rear into the front support on the track roller frame.

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   Illustration 8	g01179371
   (3) Track adjusting mechanism

5. Release the pressure from track adjusting mechanism (3).
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   Illustration 9	g01159659

6. Place cribbing under the grouser bar.

7. Remove the bolts for the track shoe from the master track link with Tooling (A) and separate the master track link.
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   Keep away from the front of the machine when the track is pushed off the final drive. A minimum distance of 7.6 m (25 ft) is needed in front of the track to permit the track to move out onto the floor.

8. Turn the final drive in a forward direction and allow the track to fall forward.
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   Illustration 10	g01159675

   Note: All illustrations in this document are shown with the rail downward.

9. Use cribbing to provide clearance for Tooling (G).
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   Illustration 11	g01159681

10. Use a permanent pen to mark the track pins and bushings for proper reinstallation.

    Note: to determine reusability, examine the track joint.

11. Calibrate the hydraulic system.

    Note: Tooling (B) should be calibrated with Tooling (F). Tooling (B) should be used as a master gauge in the field. Connect Tooling (X) and Tooling (Y) with Tooling (C). Use calibrated Tooling (B) and assembled Tooling (C) to check the accuracy of Tooling (D) on Tooling (E).

    Recommended calibration range of the master gauge is 34500.0 kPa (5000.00 psi) to 60300.0 kPa (8745.00 psi). Connect the master gauge to the high-pressure hose on Tooling (E). Record the correct assembly pressure on the mounted gauge when the correct assembly pressure is achieved. The recorded pressure is the pressure that should be used to assemble the track.

Removal of the Damaged Joint

Note: This Undercarriage Reconditioning Bulletin uses Tooling (G) to repair the track.

Note: Refer to Servicing Handbook, PEKP9400, "Caterpillar Track Service Handbook". For current reuse information, refer to Undercarriage Reconditioning Bulletin, SEBF8558, "Guideline for Reusable Track Parts".

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Illustration 12	g01159691
(4) Bolster

1. Remove bolster (4) from Tooling (G) and install Tooling (AA).

   Note: Use Tooling (H) to suspend Tooling (G). Tooling (G) will be easier to maneuver by using Tooling (H).

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   Illustration 13	g01159706

2. Position Tooling (G) around the track link assembly.
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   Illustration 14	g01159712

3. Install Tooling (BB) in the bolster.
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   NOTICE
   Using the wrong pin receiver will result in interference between the receiver inside diameter and the retainer ring.

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   Illustration 15	g01159719
   (4) Bolster

4. Install the bolster (4) on Tooling (G).
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   Illustration 16	g01159702

5. Connect the hydraulic lines to Tooling (G).
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   Illustration 17	g01159721

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   Illustration 18	g01159722

6. Align Tooling (AA) and Tooling (BB) on the track link assembly.
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   Illustration 19	g01159724

7. Remove the track pin with Tooling (G).
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   Illustration 20	g01159727

8. Install Tooling (CC) after the first track pin is removed.

9. Remove the track pins that are next to the dry joint. Install Tooling (CC) as each additional track pin is removed.

10. Remove Tooling (G) and one guide pin.
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    Illustration 21	g01159729

11. Use Tooling (J) to spread the track links.

    Note: Use only minimal force. Excessive force will cause the track links to move on the bushing, resulting in incorrect bushing projection and possible interference of the track links.

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    Illustration 22	g01159731

12. After the track links have been spread apart, carefully separate the track joint.

13. Move Tooling (J) to the adjacent pair of track links.
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    Illustration 23	g01159732

14. Attach a hoist to the pair of track links which will be removed.

15. Remove Tooling (CC).

16. Use Tooling (J) to spread the adjacent pair of track links and remove the damaged track joint.

17. Remove the thrust rings and remove the retaining rings as each track pin is pressed out of the bore of the track link.

    Note: If the retaining ring does not fall out of the groove on the track link, use a hammer and a chisel to remove the retaining ring. Be careful not to damage the groove of the track link. The angle and depth of the groove are important.

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    Illustration 24	g01159733

18. Remove the sleeve bearings from each end of the bushing.

    Note: Sleeve bearings may be interchanged freely within any track joint.

Preparation for Assembly

Assembly that involves track bushings and track links must be done on the track press. Tooling for removal of the bushing in the field is not available. Refer to Undercarriage Reconditioning Bulletin, SEBF8609, "Shop Repair Procedure for Sleeve Bearing Track".

Note: Clean the track pins, bushings, thrust rings, and track links. A cross section of a track joint is shown in Illustration 1 to help the serviceman identify the track components. Inspection is easier when the track pins are clean. Cleaning the track pins removes any foreign material and contaminated oil.

Note: For current reuse information of the track components, refer to Undercarriage Reconditioning Bulletin, SEBF8558, "Guideline for Reusable Track Parts".

Note: Whenever any track joint is disassembled, always replace the seal with a new seal.

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Illustration 25	g01159773
(5) Spot face of the track link

1. Remove any burrs or material from the spot face of track link (5) that will interfere with Tooling (EE).

2. Remove the old seals.
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   Illustration 26	g02085489

3. Thoroughly clean the track link counterbores for the seals with Tooling (K) and (L).

   Note: Tooling (L) should be rated at the maximum rpm rating of Tooling (K). Make sure that all debris is removed from the retaining ramp on the track link.

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   Illustration 27	g02085494

4. Wipe the track link counterbore with Tooling (Z).

   Note: Tooling (Z) is a lint free cloth.

5. Inspect the bushing for reusability.

   Note: Refer to Undercarriage Reconditioning Bulletin, SEBF8558, "Guideline for Reusable Track Parts". Determine the type of seal which will be used after inspecting the bushing.

   Post turn seals are now available for all D11T/R/N track link assemblies. These new seals have a smaller diameter than the original seals. If a bushing has a maximum of 50 percent end grooving and the bushing is being reused, the post turn seal should be used. The post turn seal will contact a new, unworn surface of the bushing which will provide a better reliability of the seal after service. Reference Information Release Memo, PELJ0242, "New D11R/N Post Turn Track Seals" for more information.

   Use the new 241-1854 Seal Installer with the D11T/R/N post turn seal.

   The original seal is still available for use when the bushings are replaced. If the end grooving exists inside 4C-8613 End Groove Gauge, the bushing should be replaced. Ignore the shiny band of contact area. Reference Undercarriage Reconditioning Bulletin, SEBF8558, "Guideline for Reusable Track Parts".

   Refer to Table 3 or Parts Sales Kit, PECP3003 for the seal part numbers.

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   Table 3

   	Original Seal	Post Turn Seal
   Seal Assembly	222-7007	261-4338
   Seal Kit	248-5531	261-4408

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   Illustration 28	g01176012
   Original seal (1) Seal (2) Link (3) Bushing (4) Thrust ring (5) Pin

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   Illustration 29	g01176060
   Post turn seal (1) Seal (2) Link (3) Bushing (4) Thrust ring (5) Pin

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   Illustration 30	g01159785

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   Illustration 31	g01159786

6. Install the new seals with Tooling (M). Make sure that the seal is seated properly in the track link counterbore and use a firm even pressure to properly seat the seal.

   Note: For ease of seal installation, the outer load ring may be lubricated with a light weight oil.

   Note: Do not lubricate the track pin or the pin bore to reduce walking of the track pin.

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   NOTICE
   Do not damage the seal face or the bushing ends. Cleaning the bushing ends with abrasives will damage the seal surface. It is critical that the bushing faces are not scratched from metal to metal contact or sliding them on any surface. If parts are to be put in storage, protect them from damage and corrosion. Corrosion in the seal band area will cause the seal to fail.

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   Illustration 32	g02085496

7. Install the optional 9W-9621 Ring Group on Tooling (M) with the adhesive side facing upward.

   Note: The facing group is optional to help achieve proper articulation of the track joint after installation on the tractor. However, unlocking the track joint is the best practice to achieve the proper end play.

   Note: Thrust rings can be ordered with the applied ring. This assembly is 257-8845 Track Link Ring.

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   Illustration 33	g02085500

8. Slide the thrust ring onto Tooling (M). Press firmly on the thrust ring until the ring adheres to the thrust ring.

9. Remove the thrust ring from Tooling (M).

10. Repeat Steps 7 through 9 for reverse side of thrust ring.

11. Install the thrust ring into the track link counterbore.

    Note: Applying a thin layer of molybdenum grease to the face of the thrust ring may help hold the thrust ring in the track link counterbore.

12. Repeat Steps 7 through 11 for the other track link counterbores.
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    Illustration 34	g01159791

13. Inspect each track pin for excessive wear or damage, plugged crossholes, or other signs of damage such as spalling or galling.

    Note: Refer to Undercarriage Reconditioning Bulletin, SEBF8558, "Guideline for Reusable Track Parts".

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    NOTICE
    Do not grind the end of the pin. Any change in the pin end will adversely affect assembly and result in damage to tooling and track. Small burrs may be removed with very light grinding.

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    Illustration 35	g02085501

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    Illustration 36	g01237935

14. Lubricate the stopper with a light weight oil and install the stopper in the end of the track pin with Tooling (N).

    Note: The stopper must be installed 7.0 ± 7.0 mm (0.28 ± 0.28 inch) below the surface of the track pin.

    Note: Absorption of the oil by the stopper causes the rubber to swell. Swelling of the stopper locks the stopper in place. Installing all stoppers before inspecting the remaining track components will allow time for the stoppers to swell. The plastic plugs will be installed later.

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    Illustration 37	g01159804

    Note: The 4.0 mm (0.16 inch) galled ring on the sleeve bearing refers to a continuous area 4.0 mm (0.16 inch) wide. The rings of galling should be measured individually if the sleeve bearing has smaller thin rings of galling. The widths of the rings of galling should be added. The rings of galling cannot exceed 4.0 mm (0.16 inch).

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    Illustration 38	g01159807
    The rings of galling exceed 4.0 mm (0.16 inch).

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    Illustration 39	g01159808
    The individual rings add up to 4.0 mm (0.16 inch).

15. Inspect the sleeve bearings for galling.

16. Install sleeve bearings into the bushings.

    Note: The sleeve bearings may be installed in any orientation.

Assembly of Track

1. Attach a hoist to the new set of track links.

2. Use Tooling (J) to spread the adjacent track links open so the bushing can pass by the seals.
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   NOTICE
   Maximum care should be used to prevent the bushing from contacting the seal lips as the joint is brought into alignment. The seal lips can be cut as the bushing slides past.

3. Align the bushing with the seals and lower the hoist to position the pairs of track links together.
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   Illustration 40	g01165055

4. Install Tooling (CC).

5. Release the hydraulic pressure and remove Tooling (J).

6. Repeat Steps 1 through 5 for the opposite end of the new set of track links.
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   Illustration 41	g01160912

7. Install Tooling (G) around the joint of the track assembly with the proper Tooling (DD) and (BB).

8. Align tooling with the track links and the track pin.

9. Install the new track pin with the crosshole toward the wear surface of the track links. Position the track pin so the oil hole faces the same side of the track as the other track pins.
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   NOTICE
   The track pin must always be installed so the cross drilled hole is towards the wear surface of the track links. The track pin must be installed in this position to ensure minimum load on the track pin in the area of the cross drilled hole. The track pin may break if installed with the cross drilled hole in any other position.

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   Illustration 42	g01160925
   (6) New track pin

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   NOTICE
   When the pin is installed to the correct depth, it will protrude above the spot face on the link surface. The pin projection adapters have the proper pin projection built in and the correct pin projection should occur automatically, provided the tooling is maintained in good condition and all foreign material (burrs and cold-flowed material) is removed from the spot face surfaces on the links. Correct pin projection is necessary to align the retaining ring groove on the pin with the retaining ring ramp in the link. Unless these are in alignment, the ring will not provide the desired retention.

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   NOTICE
   Make sure the correct hydraulic pressure is used for the assembly procedure. Hydraulic pressure outside the specification will result in poorly assembled joints or joints with excessive end play.

10. Press the track pin into the pin bores of the link until the track pin is approximately 13.0 mm (0.50 inch) from the spot face of the track link.
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    Illustration 43	g01169983

11. Install Tooling (EE) on Tooling (G).

12. Press the track pin completely into the bores of the track link.

    Note: Do not remove Tooling (CC) from the bore of the track link until the track pin is installed completely.

13. Measure the pin projection of the track assembly. A pin projection of 1.80 ± 0.13 mm (0.071 ± 0.005 inch) is recommended.

14. Move the tooling to the second joint and repeat Steps 8 through 13.
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    Illustration 44	g02085503

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    Illustration 45	g01160080

15. Install a retaining ring on each end of the track pin.
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    Illustration 46	g01165079

16. Install Tooling (FF) and align Tooling (FF).

    Note: Rotate the extruders several times as the spring-loaded centers are compressed.

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    NOTICE
    Careful alignment is necessary to make sure the lands of the extruder do not contact the pin ends. Contact can cause the extruding land to break off the extruder assembly, damaging the tooling and the link assembly.

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    Illustration 47	g02085506

17. Press the retaining rings into the groove of the track link. The maximum allowable force for installing the retaining rings is 1245 kN (280000 lb).

18. Remove Tooling (FF).

    Note: Tap the tooling with a hammer if the tooling sticks to the end of the retaining ring.

19. Install Tooling (GG) on both sides of the track joint.
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    Illustration 48	g02085507

20. Unlock the track joint by applying force to the track pin through Tooling (GG). The maximum allowable force for unlocking the track joint is 1334 kN (300000 lb).

    Before unlocking, the joint will not articulate. Applying and releasing the unlocking force allows the links to move slightly outward. Unlocking gives the joint end play and the ability to articulate. Unlocking force must be adjusted to achieve proper end play values.

    Note: The maximum allowed unlocking force may not achieve full articulation of the track joint. However, installing the optional facing group on the thrust ring may aid in proper articulation of the joint once the track is put into service on the tractor.

21. Repeat Steps 15 through 20 for the second joint.

22. Remove Tooling (G) from the track link assembly.

23. Check the end play of the track links.

24. Use a pry bar to apply force on the track links at one of the recently assembled joints.
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    Illustration 49	g02085509

25. While the force is applied, set Tooling (Q) to zero.

26. Remove the force between these track links and apply force between the other two track links of the track joint.

27. Read the total end play on the dial indicator while the force is applied to the track links.

    Note: Acceptable end play is 0.03 mm to 0.20 mm (0.001 inch to 0.008 inch).

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    Illustration 50	g02085510

28. Check each assembled track joint for articulation. Articulation of the track joint will aid in field installation.

29. Repeat Steps 23 through 28 for the second track joint.

Lubrication of the Track Joint

Refer to Undercarriage Reconditioning Bulletin, SEBF8594, "Nitrogen Pressure Test Unit".

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Illustration 51	g02085511
Tooling (S)

1. Introduce nitrogen into the oil cavity to a pressure of 138.0 kPa (20.0 psi) with Tooling (S).

   Note: The cavity must be sealed and pressure observed for 10 seconds.

   Note: A pressure drop of 3.5 kPa (0.50 psi) or less is acceptable.

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   NOTICE
   Do not allow a surge of air to enter the track joint and do not use pressure in excess of 138 kPa (20 psi).

2. Fill track joints with oil. Refer to Undercarriage Reconditioning Bulletin, SEBF8577, "Oil Volumes for Track Link Assemblies".

   Note: Caterpillar uses only synthetic oil for filling the track pins. This oil was previously used for arctic applications. This oil is now the standard oil from the factory. This oil is recommended for use at the turn of the bushing or at reseal. Refer to Table 4.

   Note: The synthetic oil is available in the following quantities:

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   Table 4

   Part Number	Part Description	Quantity
   242-3466	Gear Oil (75W-140)	19 L (5.0 US gal)
   242-3467	Gear Oil (75W-140)	208 L (55.0 US gal)

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   Illustration 52	g02086973

3. Use Tooling (O) to install the plastic plug in the rubber stopper.

   Note: Install the tapered end of the plug into the stopper first.

   Note: The plastic plug must protrude 0.0 mm to 5.0 mm (0.00 inch to 0.20 inch) out of the rubber stopper. The plug can vibrate into the cavity of the track pin if the plug is pushed fully into the stopper hole.

Preparation for Installation of the Track Shoes

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Illustration 53	g01160153

1. All paint, loose rust, metal debris, and dirt must be removed from the mating surfaces of the track components.

   Remove the paint on the mating surfaces of new link assemblies or new track shoes before installation of the track shoes. The correct clamping force cannot be achieved if the paint is not removed. The following methods may be used to remove the paint:

   • Use a sandpaper of 24 grit to remove the paint from the mating surfaces of the track links and the track shoes. A light mist of water should be sprayed on the mating surface during sanding. The water will help keep the sandpaper clean during sanding.

   • A paint remover may be used to remove the paint from the mating surfaces of the track links and the track shoes. Make sure that the paint remover does not contact the track seal. The paint remover can damage the track seal.

   • Do not use a torch to remove the paint from the mating surfaces of the track links and master track links. The high temperatures can damage the track seals.

   • Do not drag the track link assembly across the ground to remove the paint from the mating surfaces of the track links. Dragging of the track link assembly may damage the master track joint and other track components. High spots may be created on the track links. Dragging the track link assembly may cause the track joints to open.

   Note: The track bolts and the threads of the track nuts must be in good condition.

2. Lubricate the threads of the track bolts and lubricate the mating surface of the bolt head with Tooling (U).

3. Clean the teeth of the split master links.

4. Remove dirt, loose rust, and debris from the bolt holes of the master track link.

   Note: Reuse track bolts in good condition and replace damaged track bolts.

Installation of the Track Chain

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Illustration 54	g01160155

1. Fasten a cable and chain to the track.
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   Illustration 55	g01160156

2. Fasten the other end of the cable to another tractor or similar machine to pull the track over the front idler.

3. Block the other end of the track. Refer to Step 6 of "Preparation for Removal of the Track Joint".

4. Pull the track until the track bushings engage with the sprocket segments on the final drive.
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   NOTICE
   Make sure to pull the cable in a straight line.

5. Start the machine and turn the final drive in a reverse direction to pull the track together.
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   Illustration 56	g01160160

6. Place the lower end of the master track link in alignment with the upper end of the master track link.

   Note: Make sure that the teeth of both ends of the master track link are engaged properly with no interference.

   Note: Close one master link so the teeth are in full contact. The other master link should have no more than a 3.2 mm (0.13 inch) gap between the teeth.

7. Place the master track shoe in position.

8. Start all four master track bolts by hand.
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   Illustration 57	g01160163

9. Use Tooling (A) to tighten the master track bolts to a torque of 1500 ± 150 N·m (1105.0 ± 110.0 lb ft).

   Note: Do not force the track bolts if the holes are not aligned or the threads will be damaged.

10. Tighten the master track bolts by another 180 degrees. Follow the correct pattern to tighten the track bolts.

    Note: Do not tighten the track bolts more than the recommended torque.

11. All blocks, chains, and tooling should be removed.

12. Install the remaining track shoes and use Tooling (A) to tighten the standard track bolts to 1500 ± 150 N·m (1105.0 ± 110.0 lb ft).

13. Tighten the standard track bolts by another 120 degrees. Follow the correct pattern to tighten the track bolts.

Recommended Track Adjustment Procedure

1. Allow the machine to coast to a stop without using the brakes.

2. If slack is present between the rear idler and the sprocket, lightly power the machine in a forward direction.

   Note: Ensure that all the slack is between the sprocket and the front idler.

   Note: The track should be adjusted if packing conditions prevail on the job.

   Show/hide table

   Illustration 58	g01160164
   Machines that do not have a carrier roller

   Show/hide table

   Illustration 59	g01317614
   Machines that have a carrier roller

3. Place a tight line over the grouser tips from the sprocket to the front idler. For machines that do not have a carrier roller, Distance (A) is measured from the line to the grouser tip at the lowest point of sag. For machines that have a carrier roller, Distance (A) is an average measurement of the lowest point of sag between the front idler and the carrier roller and the lowest point of sag between the carrier roller and the final drive.

   Note: Distance (A) for machines that do not have a carrier roller is equal to 165 ± 10 mm (6.5 ± 0.4 inch). Distance (A) for machines that have a carrier roller is equal to 75 ± 10 mm (3.0 ± 0.4 inch).

   Note: Do not attempt to tighten the track if Distance (B) exceeds the dimensions in Table 5. Internal damage to the roller frame may occur if this dimension is exceeded.

4. Refer to the Machine Operation and Maintenance Guide for proper track adjustment procedures if the track is too tight or too loose.