301.6C and 301.8C Mini Hydraulic Excavators Machine Systems Caterpillar


Main Hydraulic Pump and Gear Pump (Pilot) - Remove

Usage:

301.6C JBB

Removal Procedure

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.


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.


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



    Illustration 1g01176990

  1. Remove cover assembly (1) .



    Illustration 2g01176991

  1. Disconnect hose assemblies (2). Disconnect hose (3) .

  1. Remove screws (5) from fuel filler assembly (4) .



    Illustration 3g01176992

  1. Disconnect hoses (6) and position fuel filler assembly (4) out of the way.



    Illustration 4g01177130

  1. Disconnect hose assemblies (7). Remove bolts (8) .



    Illustration 5g01177261

  1. Remove bolts (9) and remove the main hydraulic pump and gear pump (10) .

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