C7.1 Industrial Engine Caterpillar


Fuel Priming Pump - Remove and Install - Electric Fuel Lift Pump (EFLP)

Usage:

C7.1 770

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
370-8376  Cap Kit 


NOTICE

Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training.

Before beginning ANY work on the fuel system, refer to Operation and Maintenance Manual, "General Hazard Information and High Pressure Fuel Lines" for safety information.

Refer to System Operation, Testing and Adjusting, "Cleanliness of Fuel System Components" for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel 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.

Dispose of all fluids according to local regulations and mandates.


  1. Turn the fuel supply to the OFF position.

  2. Turn the battery disconnect switch to the OFF position.


    Illustration 1g02237533

  3. Make a temporary identification mark on plastic tube assembly and hose assembly in order to show the correct position of the tube assemblies.

  4. Slide hose clamp (2) along hose assembly (1). Disconnect hose assembly (1) from the assembly of fuel priming pump (7).

  5. Use Tooling (A) in order to plug the hose assembly with new plug. Use Tooling (A) in order to cap all open connectors on the fuel priming pump with new caps.

  6. Disconnect plastic tube assembly (6) from the assembly of fuel priming pump (7). Use Tooling (A) in order to plug the tube assemblies with new plugs. Use Tooling (A) in order to cap all open connectors on the fuel priming pump with new caps.

  7. Disconnect the harness assembly from fuel priming pump connection (8).

  8. Remove bolts (3) and bolt (4).

  9. Remove the assembly of priming pump (7) from bracket (5).


    Illustration 2g02237534

  10. If necessary, follow Step 10.a through Step 10.d in order to disassemble the assembly of the fuel priming pump (7).

    1. Remove allen head screws (11) from fuel priming pump (7).

    2. Remove fuel priming pump (7) from manifold (10).

    3. Remove O-ring seal (12) (not shown).

    4. If necessary, remove connection (13) from manifold (10). Remove O-ring seal (14) (not shown) from connection (13).

Installation Procedure


NOTICE

Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training.

Before beginning ANY work on the fuel system, refer to Operation and Maintenance Manual, "General Hazard Information and High Pressure Fuel Lines" for safety information.

Refer to System Operation, Testing and Adjusting, "Cleanliness of Fuel System Components" for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system.


  1. Ensure that the fuel priming pump is clean and free from wear and damage. If necessary, replace the fuel priming pump.


    Illustration 3g02237534

  2. If necessary, follow Step 2.a through Step 2.c in order to assemble fuel priming pump (7).

    1. If necessary, install a new O-ring seal (14) to connection (13). Install connection (13) to manifold (10). Tighten the connection to a torque of 20 N·m (177 lb in).

    2. Install a new O-ring seal (12) to fuel priming pump (7).

    3. Position fuel priming pump (7) onto manifold (10). Install allen head screws (11). Tighten the allen head screws to a torque of 9 N·m (80 lb in).


    Illustration 4g02237533

  3. Position assembly of fuel priming pump (7) onto mounting bracket (5).

  4. Install bolt (4) and bolts (3) to the fuel priming pump. Tighten bolt (4) and bolts (3) to a torque of 22 N·m (195 lb in).

  5. Remove plug from hose assembly. Remove cap from connector on the fuel priming pump. Connect hose assembly (1) to fuel priming pump (7). Slide hose clamp (2) along hose assembly (1).

    Note: Ensure that the hose clamp is correctly positioned.

  6. Remove plug from plastic tube assembly. Remove cap from connector on the fuel priming pump. Connect plastic tube assembly (6) to fuel priming pump (7).

  7. Connect the harness assembly to fuel priming pump connection (8).

  8. Turn the fuel supply to the ON position.

  9. Turn the battery disconnect switch to the ON position.

  10. Prime the fuel system. Refer to Operation and Maintenance Manual, "Fuel System - Prime"for the correct procedure.

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