308C CR Excavator Hydraulic System – Gear Pump (Pilot) – Disassemble

Disassembly Procedure


Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, “Caterpillar Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.

    Illustration 1 g00877733

  1. Remove fittings (1) from the gear pump.

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  1. Remove O-ring seal (2) .

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  1. Remove bolts (3) and remove the end frame from the housing.

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  1. Remove O-ring seal (4) and ring seal (5) from end frame (6). Remove thrust plate (7) and backup ring (8) from housing (9) .

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  1. Remove drive gear (10) and idler gear (11) from housing (9) .

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  1. Remove bushings (12) .