303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Pilot Valve (Blade) - Disassemble Caterpillar

Disassembly Procedure

Start By:

1. Remove the pilot valve. Refer to, "Pilot Valve (Blade) - Remove".

Note: Cleanliness is an important factor. Before the disassembly procedure, thoroughly clean the exterior of the component in order to prevent dirt from entering the internal mechanism.

Note: During the disassembly of the pilot valve, put identification marks on each component for assembly purposes.

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Illustration 1	g01226866

1. Remove boot (1) from the pilot valve assembly.

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Illustration 2	g01226869

2. Remove adjusters (2) from the pilot valve assembly.

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Illustration 3	g01226871

3. Remove bolts (3) and remove lever (4) from the pilot valve assembly.

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Illustration 4	g01226875

4. Loosen setscrew (5) .

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Illustration 5	g01226880

5. Remove pin (6) from the pilot valve assembly.

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Illustration 6	g01226897

6. Remove camdrive (7) from the pilot valve assembly.

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Illustration 7	g01226898

7. Remove bolts (8) and remove housing (9) from the pilot valve assembly.

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Illustration 8	g01226905

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

8. Remove sleeves (10). Remove rod (11) from sleeves (10). Remove O-ring seal (12) from sleeves (10) .

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Illustration 9	g01226907

9. Remove shims (13) .

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Illustration 10	g01226911

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

10. Remove spool assembly (14) .

11. Remove the following items from spool assembly (14) : bolt (15) (not shown), sleeve (16), spring (17), shims (18) and washer (19) .

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Illustration 11	g01226937

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

12. Remove spool assembly (20) .

13. Remove the following items from spool assembly (20) : bolt (21) (not shown), collar (22) (not shown), sleeve (23), spring (24), shims (25) and washer (26) .

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Illustration 12	g01226915

14. Remove springs (27) .