986H Wheel Loader Machine Systems Caterpillar


Piston Pump (Steering) - Remove and Install

Usage:

986H 986

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.


------ WARNING! ------

Personal injury can result from hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.


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

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

  1. Release hydraulic system pressure.


    Illustration 1g06110020

  2. Remove hose assemblies (1), (2), and (3).


    Illustration 2g06110023

  3. Remove hose assemblies (4) and (5).


    Illustration 3g06110025


    Illustration 4g06110029

  4. Remove bolt (6). Remove bolt (7). Use to people to remove steering pump (8). The weight of steering pump (8) is approximately 54 kg (119 lb).

Installation Procedure

  1. Install steering pump (8) in the reverse order of removal.

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