C3.3 Industrial Engine Caterpillar


Fuel Priming Pump - Remove and Install

Usage:

C3.3 E3J

Introduction

The priming pump is mounted above the starting motor. The priming pump is combined with the fuel filter.

Removal Procedure

Start By:

  1. Remove the assembly of the filter case and the fuel filter element. Refer to this Disassembly and Assembly Manual, "Fuel Filter Base - Remove and Install".

Note: There is an option for the three cylinder engine. The fuel priming pump and the fuel filter can be installed onto the application rather than onto the engine. If this is the case, refer to the appropriate installation manual that is supplied by the OEM for further information.

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


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.



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.

Dispose of all fluids according to local regulations and mandates.




    Illustration 1g00952432
    Typical example

  1. Disconnect the tube assembly (5). Disconnect the tube assembly (6). Install dust covers onto the connectors for the fuel priming pump.

  2. Disconnect the fuel return line from the connector (3). Install a dust cover to the connector (3).

  3. Disconnect the harness assembly from the connector (2).

  4. Support the fuel priming pump. Remove the three setscrews (1) and discard the rubber washers. Remove the fuel priming pump (4).

Installation Procedure

The priming pump is mounted above the starting motor. The priming pump is combined with the fuel filter.


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 2g00952432
    Typical example

  1. Clean the external surfaces of the fuel priming pump (4). Position the fuel priming pump (4) and install the three setscrews (1) and new rubber washers.

  2. Remove the dust covers from the fuel priming pump (4). Remove the plugs from the tube assemblies. Connect the tube assembly (5). Connect the tube assembly (6).

  3. Connect the fuel return line to the connector (3).

  4. Connect the harness assembly to the connector (2).

  5. Remove the air from the fuel system. Refer to the Operations and Maintenance Manual, "Fuel System - Prime".

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