324D and 325D Forest Machines Machine Systems Caterpillar

Assembly Procedure

Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. All disassembly and all assembly procedures must be performed on a clean work surface and in a clean hydraulic area. Keep cleaned parts covered and protected at all times.

Note: O-rings, gaskets, and seals should always be replaced. A used O-ring may not have the same sealing properties as a new O-ring. Use Tooling (A) during the assembly procedure.

1. Install the relief valves, as follows.
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   Illustration 1	g00702106

   1. Install new backup ring (13) and new O-ring seal (14) on the relief valve.
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      Illustration 2	g00702102

   2. Install ball valve (10), plunger (11), and spring (12) in relief valve (9).
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      Illustration 3	g00702097

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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. Install relief valve (9) in the valve body. Tighten relief valve (9) to a torque of 69 ± 7 N·m (51 ± 5 lb ft).

2. Repeat Steps 1.a through 1.c for the remaining relief valve.

3. Install the fine swing solenoid, as follows.
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   Illustration 4	g00702085

   1. Install new O-ring seals (5), (7), (6), and (8).
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      Illustration 5	g00702084

   2. Install fine swing solenoid (4).

   3. Install bolts (3). Tighten bolts (3) to a torque of 7 ± .7 N·m (62.0 ± 6.20 lb in).
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   Illustration 6	g00702083

4. Install O-ring seals (1) and (2) in the valve body.

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1. Install the swing cushion valve. Refer to Disassembly and Assembly, "Swing Cushion Valve - Install".