325F Excavator Machine Systems Drift Reduction Valve (Boom) - Disassemble Caterpillar

Disassemble Procedure

Start By:

1. Remove the drift reduction valve (boom).

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Illustration 1	g02241173

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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.

1. Remove bolts (10), cover (9), O-ring seal (8), spring (7), retainer (6), and spool assembly (5).

2. Remove bolts (1), cover (2), O-ring seal (3), and piston (4).
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   Illustration 2	g02241174

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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.

3. Remove relief valve (11).

4. Remove bolts (12), cover (13), spring (16), valve (17).

5. Remove O-ring seal (15) and backup ring (14) from cover (13).
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   Illustration 3	g02241175

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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.

6. Remove nut (18), screw (19), spring (21), plunger (22), body (23), spring (27), spring (28), plunger (29), valve (30), and valve (33) from body (34).

7. Remove O-ring seal (20) from screw (19).

8. Remove O-ring seal (26), backup rings (25), and O-ring seal (24) from body (23).

9. Remove backup rings (32) and O-ring seal (31) from valve (30).

10. Remove O-ring seal (35) from body (34).
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    Illustration 4	g02241176

11. Remove plugs (36) and the O-ring seals.