784C and 785C Off-Highway Trucks Machine Systems Caterpillar


Fuel Tank - Remove

Usage:

785C 1HW

Removal Procedure

Start By:

  1. Install the retaining cable. Refer to Disassembly and Assembly, "Truck Body Retaining Cable - Remove and Install".


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! ------

Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire.

Turn the disconnect switch OFF when draining and/or removing any fuel system components.


    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.

    Note: Put identification marks on all hose assemblies, on all tube assemblies and on all wire harnesses for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss and this helps to prevent contaminants from entering the system.



    Illustration 1g00508593

  1. Position a suitable container under fuel tank (1) in order to contain the fuel for storage or disposal.

  2. Remove plug (2) from fuel tank (1) in order to drain the fuel from fuel tank (1) into an appropriate container. The capacity of fuel tank (1) is approximately 1895 L (500 US gal).

    Note: Use 5P-3413 Pipe Sealant on the threads of plug (2) prior to installation.

  3. Install plug (2) onto fuel tank (1) after fuel tank (1) has been drained.


    Illustration 2g00508599

  4. Remove six bolts (3) and the washers in order to remove guard (4).


    Illustration 3g00508600

  5. Disconnect wire harness (7) from wire harness (6) at the electrical connection. Pull wire harness (6) out of guard (5) and position wire harness (6) out of the way.


    Illustration 4g00508606

  6. Disconnect hose assembly (8) from fuel shutoff valve (10). Remove fuel shutoff valve (10).

  7. Disconnect hose assembly (9) from elbow (11). Remove elbow (11).


    Illustration 5g00508609

  8. Loosen hose clamp (12) and disconnect hose assembly (13).


    Illustration 6g00508610

  9. Attach a suitable lifting device and a hoist in order to support the weight of fuel tank (1).


    Illustration 7g00508611


    Illustration 8g00508612

  10. Remove two bolts (14), the two washers (15) and the nuts. Remove two mountings (16) and two mountings (17).


    Illustration 9g00508614

  11. Remove two bolts (18) and the washers. Remove cap (19). Remove shim pack (20). Repeat for the other side of fuel tank (1).

  12. Use the hoist in order to remove fuel tank (1). The weight of fuel tank (1) is 680 kg (1500 lb).

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