D8T Track-Type Tractor Power Train Equalizer Bar - Remove and Install Caterpillar

Removal Procedure

Start By:

1. Remove the equalizer bar pads.

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When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.

Note: Threaded rods cannot be used with hydraulic cylinders as tooling.

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Illustration 1	g01139630

1. Remove bolts (1) from retainer (2). Repeat for the opposite side.

   Note: The pivot shaft seal will be damaged if bolts (1) are not removed.

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   Illustration 2	g01139632
   For Tooling (A)

2. Position Tooling (A) under the front of the machine. Use Tooling (A) to raise the front of the machine slightly.
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   Illustration 3	g06385267
   For Tooling (A1)

3. Position Tooling (A1) under the front of the machine. Use Tooling (A1) to raise the front of the machine slightly. Refer to Tool Operating Manual, NEHS1303, "Lift Group (Stand - 25 Ton)" for more information on Tooling (A1).
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   Illustration 4	g01139651

4. Loosen bolts (4) that hold pin (3) in the track roller frame. Remove pin (3). Drain the oil into a suitable container. Repeat for the opposite side.
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   Illustration 5	g01139658

5. Remove bolts (5) and plate (6).
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   Illustration 6	g01139664

6. Install Tooling (C) between the front of equalizer bar assembly (9) and saddle (8) to prevent movement during the removal of pin (7).
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   Illustration 7	g01139691
   For Tooling (A)

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   Illustration 8	g06385266
   For Tooling (A1)

7. Attach a suitable lifting device to equalizer bar assembly (9). The weight of equalizer bar assembly (9) is approximately 245 kg (540 lb).
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   Illustration 9	g01584595

   Note: Do not exceed 50 tons of force for Tooling (B).

8. Use Tooling (B) to pull pin (7) out of saddle (8).

9. Adjust Tooling (B). Pull pin (7) out of saddle (8) until the step in pin (7) is clear of saddle (8). Remove Tooling (B).
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   Illustration 10	g01139687

10. Remove pin (7) from saddle (8).
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    Illustration 11	g01139750
    For Tooling (A)

11. Use Tooling (A) to raise the front of the machine to a height of approximately 1140 mm (45.0 inch). Measure the distance from Point (X) on the main frame to the ground.
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    Illustration 12	g06385397
    For Tooling (A1)

12. Use Tooling (A1) to raise the front of the machine to a height of approximately 1140 mm (45.0 inch). Measure the distance from Point (X) on the main frame to the ground.
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    Illustration 13	g01139738

13. Remove spacer (10) from each side of equalizer bar assembly (9).

14. Raise one end of equalizer bar assembly (9) to contact with the main frame rail. Lower the other end of equalizer bar assembly (9) to the ground. Remove equalizer bar assembly (9).

Installation Procedure

1. Install equalizer bar (9) in the reverse order of removal.
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   Table 2

   Torque Table
   Undercarriage Types	Torque Value
   Suspended Undercarriage	1800 ± 250 N·m (1328 ± 184 lb ft)
   Non-Suspended Undercarriage	1600 ± 200 N·m (1180± 148 lb ft)

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   Illustration 14	g03714382

   1. Tighten bolt (4A) to the torque value listed in Table 2.

   2. Tighten bolt (4B) to the torque value listed in Table 2.

   3. Torque bolt (4A) again to the torque value listed in Table 2.

   4. Torque bolt (4B) again to the torque value listed in Table 2.