525D, 535D, 545D and 555D Wheel Skidders Machine Systems Caterpillar

Assembly Procedure

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Illustration 1	g06243168

1. Install O-ring seal (26).

2. Install backup ring (29) and O-ring seal (27).

3. Install backup ring (30) and O-ring seal (28).
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   Illustration 2	g06243159

4. Install pressure reducing valve (25). Tighten pressure reducing valve (25) to a torque of 60 ± 2 N·m (44 ± 1 lb ft).
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   Illustration 3	g06243149

5. Install O-ring seal (20).

6. Install backup ring (23) and O-ring seal (21).

7. Install backup ring (24) and O-ring seal (22).
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   Illustration 4	g06243152

8. Install pressure reducing valve (19). Tighten pressure reducing valve (19) to a torque of 60 N·m (44 lb ft).
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   Illustration 5	g06243139

9. Install O-ring seal (14).

10. Install backup ring (17) and O-ring seal (15).

11. Install backup ring (18) and O-ring seal (16).
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    Illustration 6	g06243086

12. Install pressure reducing valve (13). Tighten pressure reducing valve (13) to a torque of 60 N·m (44 lb ft).
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    Illustration 7	g06243033

13. Install O-ring seal (10), O-ring seal (11), and backup ring (12).
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    Illustration 8	g06243022

14. Install check valve assembly (9). Tighten check valve assembly (9) to a torque of 80 ± 12 N·m (59 ± 9 lb ft).
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    Illustration 9	g06242697

15. Install O-ring seal (4).

16. Install backup ring (7), O-ring seal (5), backup ring (8), and O-ring seal (6).

17. Install coil assembly (3) and nut (2). Tighten nut (2) to a torque of 9.5 ± 1.5 N·m (84 ± 13 lb in).

18. Repeat Steps 15 through 17 for the remaining solenoid valve.
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    Illustration 10	g06242687

19. Install solenoid valves (1). Tighten solenoid valves (1) to a torque of 43 ± 3 N·m (32 ± 2 lb ft).

End By:

1. Install the pilot oil accumulator (dead engine lower).