836K Landfill Compactor and 834K Wheel Dozer Machine Systems Caterpillar

Separation Procedure

Start By:

1. Remove the cab.

2. Remove the center drive shaft.

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At operating temperature the implement hydraulic oil tank is hot and under pressure. Hot oil can cause burns. To prevent possible injury, release the pressure in the implement hydraulic system before hydraulic lines or components are disconnected or removed.

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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.

1. Drain the hydraulic system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Capacities - Refill" for the capacity of the hydraulic tank. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".
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   Illustration 1	g01416912

2. Install Tooling (F) to the rear wheels.
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   Illustration 2	g00749039

3. Position Tooling (A) under the rear part of the front frame on each side.
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   Illustration 3	g03501500

4. Position Tooling (B) under the front part of the rear frame on each side.
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   Illustration 4	g00749042

5. Position Tooling (C) on the rear part of the rear frame.
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   Illustration 5	g02106157

6. Remove pin assembly (1). Repeat for the opposite side of the machine.
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   Illustration 6	g03505482

7. Remove cover and bracket assemblies (2).
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   Illustration 7	g03505484

8. Disconnect harness assembly (3). Remove grommets (4) and place harness assembly (3) to the side. Remove hose assemblies (5) and place to the side.
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   Illustration 8	g03505551

9. Turn valve handles (6) to the OFF position.
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   Illustration 9	g03505555

10. Disconnect all hose assemblies (7) from the rear frame and place to the side.
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    Illustration 10	g03505598

11. Disconnect valves (8) from bracket assembly (9) and set valves (8) to the side. Remove bracket assembly (9).
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    Illustration 11	g03505631

12. Attach Tooling (J) and a suitable lifting device to both sides of front frame (10). The weight of front frame (10) is approximately 9072 kg (20000 lb).
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    Illustration 12	g03505656

13. Place the forks of a suitable lift truck under blade (11). Use suitable chains in order to secure blade (11) to the lift truck.
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    Illustration 13	g03505657

14. Remove bolts (14), plate (12), and shims (13) (not shown) from the bottom of the upper hitch.
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    Illustration 14	g03505675

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    Illustration 15	g03505677

15. Remove bolts (15) and (16).

16. Remove plate (17) from the top of the upper hitch.

17. Remove shims (18).
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    Illustration 16	g00700685
    Typical Example

18. Use a suitable lifting device in order to install Tooling (D) on the upper hitch pin. The weight of Tooling (D) is approximately 91 kg (200 lb).

19. Use a suitable lifting device and Tooling (D) in order to remove the upper hitch pin. The weight of Tooling (D) and the upper hitch pin as a unit is approximately 118 kg (260 lb).
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    Illustration 17	g03505721

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    Illustration 18	g03505726

20. Use suitable cribbing in order to position Tooling (E) to lower hitch pin assembly (20).

21. Remove bolt (19). Use Tooling (E) in order to remove lower hitch pin (20).
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    Illustration 19	g03505740

22. Make sure that spacer (22) at the bottom of upper hitch assembly (21) does not hang up on the rear frame during separation.
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    Illustration 20	g00700669
    Typical Example

23. Slowly pull the front frame away from the rear frame. Continue to move Tooling (B) and the suitable lifting device. Pull the two frames until the frames are separated by approximately 610 mm (24.0 inch).

24. Install Tooling (F) to the front wheels and lower the front frame onto Tooling (B). The bearings and the seals can be serviced at this time.

    Note: Steps 25 through 31 are used for the removal of the upper hitch bearings.

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    Illustration 21	g03505740

25. Remove spacer (22) from the upper hitch assembly (21) of the front loader frame.
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    Illustration 22	g03505754

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    Illustration 23	g03505755

26. Mark the radial positions of upper cap (23) and of lower cap (24).

27. Remove bolts (25), lower cap (24), and upper cap (23).
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    Illustration 24	g03505767

28. Remove shims (26).
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    Illustration 25	g01416909

29. Use a suitable lifting device in order to install Tooling (G) to the upper hitch assembly. The weight of Tooling (G) is approximately 91 kg (200 lb).

30. Use Tooling (G) and the suitable lifting device in order to remove the bearing cups and the bearing cones from the bore in the upper hitch.
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    Illustration 26	g03505768

31. Remove lip seal (27) from the upper cap and from the lower cap of the upper hitch assembly.

    Note: Steps 32 through 36 are used for the removal of the lower hitch bearings.

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    Illustration 27	g03505773

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    Illustration 28	g03505776

32. Remove bolts (28), upper cap (29), and lower cap (30) from the lower hitch assembly of the front frame.
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    Illustration 29	g03505780

33. Remove shims (31).
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    Illustration 30	g01416907
    typical example

34. Use the suitable lifting device in order to install Tooling (H) to the lower hitch assembly. The weight of Tooling (H) is approximately 91 kg (200 lb).

35. Use Tooling (H) and the suitable lifting device in order to remove the bearing cups and the bearing cones from the bore in the lower hitch.
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    Illustration 31	g03505787

36. Remove lip seal (32) from the upper cap and from the lower cap of the lower hitch assembly.