797 Off-Highway Truck Power Train Caterpillar

Disassembly Procedure

Start By:

1. Remove the relief valve (rear axle motor unloader). Refer to Disassembly and Assembly, "Relief Valve (Rear Axle Motor Unloader) - Remove" for the machine that is being serviced.

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

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Illustration 1	g00683905

1. Remove tee fitting (1). Remove fitting (2) and the O-ring seal.
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   Illustration 2	g00683907

2. Remove cap (3). Remove fitting (6). Remove adapter (4) and the O-ring seal from valve body (5).
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   Illustration 3	g00683910

3. Remove O-ring seal (7) from the adapter.
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   Illustration 4	g00683911

4. Remove bolt (8) and the washer. Remove the electrical connector from clip (9). Remove locknut (11) and the washer. Remove coil assembly (10) from the cartridge.
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   Illustration 5	g00701658

5. Remove plug (12) and the O-ring seal from the body. Remove cartridge assembly (13) from the body. Remove plug (14) and the O-ring seal from the body.
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   Illustration 6	g00701660

6. Remove O-ring seal (15) from the plug.
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   Illustration 7	g00701661

7. Remove O-ring seal (16) from the plug.
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   Illustration 8	g00701662

8. Remove back up ring (17) and O-ring seal (18). Remove O-ring seal (19) from the cartridge.
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   Illustration 9	g00701664

9. Remove O-ring seal (20) from the body. Remove plug (21) and the O-ring seal from the body. Remove plug (22) and the O-ring seal from the body. Remove plug (23) and the O-ring seal from the body.
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   Illustration 10	g00701663

10. Remove O-ring seal (24) from the plug.
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    Illustration 11	g00701668

11. Remove O-ring seal (25) from the plug.
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    Illustration 12	g00701665

12. Remove O-ring seal (26) from the plug.
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    Illustration 13	g00701666

13. Remove plug (27) and the O-ring seal from the body.
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    Illustration 14	g00701667

14. Remove O-ring seal (28) from the plug.