521B and 522B Track Feller Bunchers Engine Supplement Caterpillar


Unit Injector Hydraulic Pump - Remove and Install

Usage:

521B F7B

Removal Procedure


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

Dispose of all fluids according to local regulations and mandates.



NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.





    Illustration 1g01020740

  1. The unit injector hydraulic pump (1) is located on the left side of the engine. Remove tube assemblies (3) and (4) .

  1. Disconnect harness assembly (2) from unit injector hydraulic pump (1) .



    Illustration 2g01023312

  1. Support unit injector hydraulic pump (1) by hand and remove bolts (5) and washers. Remove unit injector hydraulic pump (1) .

Installation Procedure

  1. Install unit injector hydraulic pump (1) in the reverse order of removal.

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