336E Excavator and 336E MHPU Mobile Hydraulic Power Unit Machine Systems Pressure Reducing Valve (Implement and Swing Priority) - Disassemble Caterpillar


Pressure Reducing Valve (Implement and Swing Priority) - Disassemble
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1.1. Disassembly Procedure

Disassembly Procedure

Start By:

  1. Remove the pressure reducing valve .


    Illustration 1g01211507


    Illustration 2g01211508

    ------ WARNING! ------

    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 plug assembly (1).

  2. Remove spring (5), stopper (4), seat (3), and spool (2).


    Illustration 3g01211510

    ------ WARNING! ------

    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 plug assembly (10), spring (9), stopper (8), seat (7), and spool (6).


    Illustration 4g01211511

  4. Remove O-ring seal (12), nut (14), and seat (11) from plug (13). Repeat for the remaining plug (13).


    Illustration 5g01211512

  5. Remove plugs (15).


    Illustration 6g01211513

  6. Remove O-ring seals (16) from plugs (15).

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