PL72 Pipelayers Power Train Caterpillar

Disassembly Procedure

Start By:

1. Remove the steering clutch and brake control valve.

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Illustration 1	g03853421

1. Remove O-ring seals (1).
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   Illustration 2	g03853642

2. Remove pressure reducing valves (3) and cartridge assembly (2).
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   Illustration 3	g03853779

3. Remove O-ring seals (4) and backup rings (5) from pressure reducing valves (3).
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   Illustration 4	g03855546

4. Remove backup ring (6) and O-ring seals (7) from valve cartridge assembly (2).
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   Illustration 5	g03854119

5. Remove nuts (9), coil assemblies (8), and valve assemblies (10).
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   Illustration 6	g03854164

6. Remove backup rings (11) and O-ring seals (12) from valve assembly (10).
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   Illustration 7	g03854881

7. Remove accumulators (13).
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   Illustration 8	g03854943

8. Remove O-ring seals (14) and backup rings (15) from accumulators (13).
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   Illustration 9	g03855022

9. Remove adapters (20), valve cartridge assemblies (16), and control valves (21). Remove nut (17), coil assembly (19), and valve assembly (18).
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   Illustration 10	g03855044

10. Remove O-ring seals (22).
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    Illustration 11	g03855299

11. Remove O-ring seals (23) and backup rings (24) from control valves (21).
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    Illustration 12	g03855459

12. Remove backup rings (25), O-rings seals (26) from valve cartridge assemblies (16).