308C CR Excavator Hydraulic System – Auxiliary Hydraulic Pump – Remove – Blade

Removal Procedure

Start By:

  1. Remove the gear pump (pilot). Refer to Disassembly and Assembly, “Gear Pump (Pilot) – Remove and Install”.


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.

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

    Illustration 1 g00884266

  1. Disconnect hose assemblies (2) and (5).
  1. Remove bolts (3) and block (1) .
  1. Remove bolts (4) and block (6).

    Illustration 2 g00884321

  1. Remove bolts (7) and remove auxiliary hydraulic pump (8) from the main hydraulic pump.

    Illustration 3 g00884383

  1. Remove O-ring seal (9) and bushing (10) from the auxiliary hydraulic pump.