302.5C Mini Hydraulic Excavator Machine Systems Caterpillar


Main Hydraulic Pump and Gear Pump (Pilot) - Remove

Usage:

302.5C GBB

Removal Procedure

Start By:

  1. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".


NOTICE

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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.


Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

  1. Drain the oil from the hydraulic system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".



    Illustration 1g01175471

  1. Disconnect hose assemblies (4) from gear pump (5) .

  1. Disconnect hose assemblies (1) and hose assembly (6) from main hydraulic pump (3) .

  1. Remove bolts (2). Remove gear pump (5) and main hydraulic pump (3) .

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