D7E Track-Type Tractor Power Train Track Adjuster and Recoil Cylinder - Remove and Install Caterpillar


Track Adjuster and Recoil Cylinder - Remove and Install
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
277-7200  Electric Hydraulic Pump 
8S-7620 Base As 
8S-7650 Cylinder As 
8S-7615 Pin 
8S-7640  Stand 
8S-7611 Tube 
8S-7615 Pin 
183-4797  Roller Lifting Fork As 

Start By:

  1. Remove the idler.


    Illustration 1g01884194

  1. Use Tooling (A) to raise the machine. Raise the machine to remove the front track roller. Use Tooling (B) to support the machine.


    Illustration 2g01954136

  2. Remove plate assembly (1). Repeat for the opposite side.


    Illustration 3g01884195

  3. Use Tooling (C) and a suitable lifting device to remove track roller (3). The weight of track roller (3) is approximately 73 kg (160 lb). Remove bolts (2) and track roller (3).


    Illustration 4g01884582


    Illustration 5g01884584

    ------ WARNING! ------

    Recoil system contains high-pressure nitrogen cylinder. Parts can separate with explosive force if proper care is not used during disassembly.

    This action can cause serious injury or death.

    Do not disassemble any part of this cylinder until you have read and understand the instructions given in the service manual. Observe the instructions given in the service manual.



    NOTICE

    Operating the machine with low pressure in the Nitrogen accumulator for the recoil system may cause damage to the machine. Replace any accumulator that will not maintain nitrogen pressure.


    Note: Loss of Nitrogen (N2) charge in the recoil system may cause extra loosening of the track. This pressure may be retained inside the track roller frame. Take caution when removing the track adjust cover.

  4. Attach a suitable lifting device to track adjuster and recoil cylinder (5). The weight of track adjuster and recoil cylinder (5) is approximately 186 kg (410 lb). Remove bolts (4). Reposition track adjuster and recoil cylinder (5).

  5. Reposition the suitable lifting device and remove track adjuster and recoil cylinder (5).


    Illustration 6g01884842


    Illustration 7g06025470

  6. Attach a suitable lifting device to track adjuster (6). The weight of track adjuster (6) is approximately 86 kg (190 lb). The weight of recoil cylinder (8) is approximately 100 kg (220 lb). Remove bolts (7) and separate track adjuster (6) from recoil cylinder (8).

    Note: After removal of the track adjuster, fill grease to grease fitting (9) on the track adjustor bearing.

Installation Procedure

  1. Install track adjuster and recoil cylinder (5) in the reverse order of removal.


      Illustration 8g01885013


      Illustration 9g03329012

    1. Measure Dimension (Y) to ensure that recoil cylinder (8) is installed correctly into the roller frame. Dimension (Y) should measure 15 - 40 mm (0.6 ± 1.6 inch).

      Note: If dimension (Y) is less than the specified measurement check for incorrect installation of recoil cylinder. If dimension (Y) is greater than the specified measurement, the recoil cylinder needs checked for proper charge levels. Refer to KENR5160 (Testing and Adjusting) for the proper testing and charging procedure.

    2. Tighten bolts (2) to a torque of 900 ± 100 N·m (665 ± 75 lb ft).

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