5230B Excavator Machine Systems Gear Pump (Pump Drive Lubrication) - Assemble Caterpillar


Gear Pump (Pump Drive Lubrication) - Assemble
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1.1. Assembly Procedure

Assembly Procedure

Note: Prior to assembly, all parts of the pump need to be clean and free of dirt and debris. Lubricate the internal parts of the pump with clean hydraulic oil. Check the condition of the O-ring seals and rings. If any seals or rings are worn or damaged, replace using new parts.




    Illustration 1g00813016

  1. Install isolation plate (15), back up ring (6), the O-ring (3 shape) (5), and the ring retainer (4) in body assembly (3) .



    Illustration 2g00813011

  1. Install 2 pressure plates (12), idler gear (13), and drive shaft (14) in body assembly (3) .



    Illustration 3g00813013

  1. If bushings (11) were removed, reinstall bushings (11) in flange (1). Install O-ring seal (10) in the flange.



    Illustration 4g00813010



    Illustration 5g00814078

  1. If lip seals (8) were removed from flange (1), then reinstall lip seals (8) in flange (1) with the following procedure:

    1. Install the first lip seal (8) with the flat surface of the lip seal toward the rear of the pump.

    1. Install retaining ring (9) .

      Note: Install the ring retainer in the flange so that the ring opening is positioned over the drain hole.

    1. Install the second lip seal (8) with the flat surface of the lip seal toward the front of the pump. Refer to Illustration 5.



    Illustration 6g00815041

  1. Install ring retainer (4) , the O-ring (3 shape) (5), back up ring (6), and the isolation plate (7) in body assembly (3) .



    Illustration 7g00813089

  1. Position flange (1) on body assembly (3). Install eight bolts (2) and the washers in flange (1) .

End By: Install the gear pump (pump drive lubrication). Refer to Disassembly and Assembly, "Gear Pump (Pump Drive Lubrication) - Install".

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