525B Wheel Skidder and 535B Wheel Skidder Engine Supplement Caterpillar

Removal Procedure

Start By:

1. Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect" for the machine that is being serviced.
2. Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "System Pressure - Release" for the machine that is being serviced.
3. Remove the winch. Refer to Disassembly and Assembly, RENR4344, "Winch - Remove".
4. Remove the bottom guard that covers the rear axle. Refer to Disassembly and Assembly, RENR4336, "Bottom Guard (Rear Axle) - Remove and Install".

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

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Illustration 1	g00704404

1. Support the arch with Tooling (A) .

2. Drain the fuel tank.

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Illustration 2	g00597307

3. The fuel tank drain is located in the articulation joint.

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Illustration 3	g00597396

4. Pull hose assembly (1) out of the opening in the rear frame. Remove face seal plug (2) from the end of hose assembly (1) .

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Illustration 4	g00704072

5. Open the ball valve with handle (3). Drain the fuel into a suitable container for storage or disposal. The capacity of the fuel tank is 315 L (83 US gal).

6. Close the ball valve with handle (3). Install face seal plug (2) to the end of hose assembly (1) .

7. Remove nut (4) and handle (3) .

8. Remove bolt (5) and clip (6) .

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Illustration 5	g00704087

9. Remove two bolts (7) and guard (8).

10. Remove two bolts (9).

11. Repeat Step 9 and 10 on the opposite side of the machine.

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Illustration 6	g00704093

12. Remove four bolts (10) and guard (11). Repeat this step for the opposite side of the machine.

13. Remove four bolts (12) .

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Illustration 7	g00704107

14. Install Tooling (B) to guard (13). Attach a hoist and suitable lifting slings to Tooling (B), as shown. Use the hoist to remove guard (13). The weight of guard (13) is 34 kg (75 lb).

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Illustration 8	g00704254

15. Use Tooling (C) and shop air to place a vacuum on the hydraulic tank.

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Illustration 9	g00704163

16. Disconnect hose (14) and (15) .

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Illustration 10	g00704176

17. Remove four bolts (16) .

    Note: Two of the bolts are hidden.

18. Slide guard (17) toward the rear of the machine.

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Illustration 11	g00704188

19. Disconnect tube (18) and tube (19) .

20. Disconnect four hose assemblies (20) .

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Illustration 12	g00704198

21. Disconnect four electrical connectors (21) .

22. Disconnect three hoses (22) and two hoses (23) .

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Illustration 13	g00704225

23. Disconnect tube (24) and tube (25).

24. Disconnect two hoses (26) and two hoses (28) .

25. Disconnect two electrical connectors (27) .

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Illustration 14	g00704231

26. Remove two bolts (29) and backup alarm (30) .

27. Remove four nuts (31) .

28. After all hydraulic tubes, hoses, and fittings have been plugged, remove the shop air from Tooling (C) in order to remove the vacuum from the hydraulic tank.

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Illustration 15	g00704241

29. Attach a hoist and a suitable lifting sling to bank valve (32). Use the hoist to remove bank valve (32). The weight of bank valve (32) is 43 kg (95 lb).

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Illustration 16	g00704259

30. Remove two tubes (33) and two tubes (34) .

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Illustration 17	g00704264

31. Remove four hoses (35) .

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Illustration 18	g00704270

32. Disconnect two hoses (36) .

33. Disconnect electrical connector (37) .

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Illustration 19	g00704310

34. Attach a hoist and a suitable lifting sling to the head end of the boom cylinder.

35. Remove bolt (39) and lock pin (40). Remove pin (41) .

36. Use the hoist to lift boom cylinder (38). Place the head end of boom cylinder (38) to the side of the frame.

37. Repeat Steps 34, 35, and 36 for the other boom cylinder.

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Illustration 20	g00704273

38. Remove four bolts (42), bolt (43), and two bolts (44).

39. Install Tooling (B) on guard (45). Attach a hoist and suitable lifting slings to Tooling (B), as shown.

40. Use a hoist to remove guard (40). The weight of guard (45) is 23 kg (50 lb).

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Illustration 21	g00704328

41. Install Tooling (B) on fuel tank (46). Attach a hoist and suitable lifting slings to Tooling (B), as shown.

42. Use a hoist to remove fuel tank (46). The weight of fuel tank (46) is 36 kg (80 lb).