PL72 Pipelayers Power Train Caterpillar

Assembly Procedure

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Illustration 1	g03855459

1. Install O-rings seals (26) and backup rings (25) onto valve cartridge assemblies (16).
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   Illustration 2	g03855299

2. Install O-ring seals (23) and backup rings (24) onto control valves (21).
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   Illustration 3	g03855044

3. Install O-ring seals (22) onto adapters (20).
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   Illustration 4	g03855022

4. Install adapters (20), valve cartridge assemblies (16), and control valves (21). Tighten control valves (21) to a torque of 34 ± 2 N·m (25 ± 1 lb ft).

5. Install valve assembly (18). Tighten valve assembly (18) to a torque of 34 ± 1 N·m (25 ± 1 lb ft).

6. Install coil assembly (19) and nut (17). Tighten nut (17) to a torque of 8 ± 2 N·m (71 ± 18 lb in).
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   Illustration 5	g03854943

7. Install O-ring seals (14) and backup rings (15) onto accumulators (13).
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   Illustration 6	g03854881

8. Install accumulators (13). Tighten accumulators (13) to a torque of 95 ± 7 N·m (70 ± 5 lb ft).
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   Illustration 7	g03854164

9. Install O-ring seals (12) and backup rings (11) onto valve assembly (10).
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   Illustration 8	g03854119

10. Install valve assembly (10). Tighten valve assembly (10) to a torque of 50 ± 5 N·m (37 ± 4 lb ft).

11. Install coil assemblies (8) and nuts (9). Tighten nuts (9) to a torque of 13 ± 2 N·m (115± 18 lb in)
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    Illustration 9	g03855546

12. Install O-ring seals (7) and backup ring (6) onto valve cartridge assembly (2).
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    Illustration 10	g03853779

13. Install O-ring seals (4) and backup rings (5) onto pressure reducing valves (3).
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    Illustration 11	g03853642

14. Install pressure reducing valves (3) and cartridge assembly (2). Tighten pressure reducing valves (3) to a torque of 47 ± 3 N·m (35 ± 2 lb ft).
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    Illustration 12	g03853421

15. Install O-ring seals (1).

End By:

1. Install the steering clutch and brake control valve.