D250E Series II and D300E Series II Articulated Trucks Machine Systems Caterpillar

Disassembly Procedure

Start By:

1. Remove the piston pump from the engine. Refer to Disassembly and Assembly, "Piston Pump (Brake) - Remove".

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Illustration 1	g00465553

1. Remove O-ring seal (1) from piston pump (2). Remove four bolts (3) that secure the pressure compensator valve to the piston pump.
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   Illustration 2	g00465554

2. Remove three O-ring seals (4) between the pressure compensator valve and the piston pump.
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   Illustration 3	g00465774

3. Use retaining ring pliers (A) to remove retaining ring (5).
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   Illustration 4	g00465771

4. Remove four bolts (6) that secure cover (7) to the piston pump. Place the cover aside.

   Note: Cover (7) compresses a spring. Remove the cover slowly.

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   Illustration 5	g00465777

5. Use driver group (B) to remove shaft seal (8) from cover (7).
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   Illustration 6	g00465783

6. Remove gasket (9) from the piston pump.
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   Illustration 7	g00465784

7. Remove spring (10) and collar (11) from the piston pump.
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   Illustration 8	g00465785

8. Remove four bolts (12) that secure cover (13) to the housing.
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   Illustration 9	g00465786

9. Separate cover (13) and housing (14). Remove clip (15). Remove the chain link.
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   Illustration 10	g00465828

10. Remove housing (14) and the piston pump from cover (13). Remove gasket (16) from the cover.
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    Illustration 11	g00465834

11. Remove shaft (17) from the piston pump.