770 and 772 Off-Highway Truck/Tractors Metering Pump (Steering) - Remove and Install Caterpillar


Metering Pump (Steering) - Remove and Install
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770 and 772 Off-Highway Truck/Tractors [RENR8273]
STEERING SYSTEM
PUMP GP-METERING
770 and 772 Off-Highway Truck/Tractors Metering Pump (Steering) - Remove and Install
1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Start By:

  1. Remove the cowling. Refer to Disassembly and Assembly, "Cowling (Radiator) - Remove and Install".

Note: Put identification marks on all hoses, on all hose assemblies, on all harness assemblies, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. 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, "AVSpare Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on AVSpare products.

Dispose of all fluids according to local regulations and mandates.


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

At operating temperature, the hydraulic tank is hot and under pressure.

Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.

Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.

----------------------

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



    Illustration 1g01388714



    Illustration 2g01388744

  1. Disconnect hose assemblies (1). Remove the nut and bolt (3) .

    Note: Use an additional person in order to support metering pump (2) during removal.

  1. Remove bolts (4). Remove metering pump (2) .



    Illustration 3g01388800

  1. Remove bolts (5) and plate (6) .



    Illustration 4g01388811

  1. Remove mounts (7) .



    Illustration 5g01388818

  1. Remove washers (8). Remove adapter (9) .



    Illustration 6g01388824

  1. Remove shim (10) .

Installation Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     161-9203     Grease Cartridge     -    
B     3S-6252     Sealant     -    



    Illustration 7g01389419

  1. Install shim (10). Apply Tooling (A) to the spline.



    Illustration 8g01388818

  1. Install adapter (9). Install washers (8) .



    Illustration 9g01388811

  1. Install mounts (7) .



    Illustration 10g01389420

  1. Install plate (6) and bolts (5). Apply Tooling (B ) to the adapter in order to seal the cab.



    Illustration 11g01389429



    Illustration 12g01388714

    Note: Make sure that the universal joint has a minimum clearance of 1.5 mm (0.0591 inch) from cab frame in order to prevent a binding when the machine is being steered.

    Note: Apply Tooling (B ) to the adapter in order to seal the cab.

  1. Use an additional person in order to support metering pump (2) during installation. Position metering pump (2). Install bolts (4).

  1. Install the nut and bolt (3). Connect hose (1) .

End By: Install the cowling. Refer to Disassembly and Assembly, "Cowling (Radiator) - Remove and Install".

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