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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. |
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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. |
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Do not fill the fuel filters with fuel before installing the fuel filters. The fuel will not be filtered and could be contaminated. Contaminated fuel will cause accelerated wear to fuel system parts. |
Refer to Operation and Maintenance Manual, "Access Doors and Covers" for the location of the service points.
Primary Filter (Water Separator) Element
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| Illustration 1 | g03853066 |
The primary fuel filter is located inside the engine compartment on the left side of the machine.
- In order to drain the primary fuel filter, open drain valve (3) on water separator bowl (2). The water separator bowl is under primary fuel filter (1). Catch the fuel in a suitable container.
- Remove primary fuel filter (1) and water separator bowl (2). Clean the filter housing base.
- Remove the water separator bowl from the primary fuel filter.
Note: Check the water separator bowl for damage. Reuse the water separator bowl if no damage is present.
- Clean the water separator bowl and clean the groove for the O-ring. Wash the water separator bowl in a clean nonflammable solvent. Use pressure air to dry the water separator bowl.
- Lubricate the O-ring with clean diesel fuel or lubricate the O-ring with clean motor oil. Place the O-ring in the groove on the water separator bowl.
- Install the clean water separator bowl onto a new filter by hand.
- Apply clean diesel fuel to the seal of the new filter.
- Install the new filter hand tight until the seal of the filter contacts the filter mounting base. Note the position of the index marks on the filter in relation to a fixed point on the filter mounting base.
Note: There are rotation index marks on the filter that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten the filter, use the rotation index marks as a guide.
- Tighten the filter according to the instructions that are printed on the filter. Use the index marks as a guide for tightening the filter. For non-Caterpillar filters, use the instructions that are provided with the filter.
Note: You may need to use a Caterpillar strap wrench, or another suitable tool, in order to turn the filter to the amount that is required for final installation. Make sure that the installation tool does not damage the filter.
- Prime the fuel system. See Operation and Maintenance Manual, "Fuel System - Prime" for the proper procedure.
- Start the engine and check for leaks.
- Close the access door.
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| Illustration 2 | g03853072 |
The secondary fuel filter is located inside the engine compartment on the left side of the machine.
- Remove secondary fuel filter (1).
- Drain the fuel from the secondary fuel filter into a suitable container.
- Clean the mounting base for the secondary fuel filter. Make sure that you remove all of the old seal.
- Apply clean diesel fuel to the seal of the new filter.
- Install the new filter by hand until the seal of the filters contacts the base. Note the position of the index marks on the filter in relation to a fixed point on the filter base.
Note: There are rotation index marks on the filter that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten the filters, use the rotation index marks as a guide.
- Tighten the filter according to the instructions that are printed on the filter. Use the index marks as a guide. For non-Caterpillar filters, use the instructions that are provided with the filter.
Note: You may need to use a Caterpillar strap wrench, or another suitable tool, in order to turn the filter to the amount that is required for final installation. Make sure that the installation tool does not damage the filter.
- Prime the fuel system. See Operation and Maintenance Manual, "Fuel System - Prime" for the proper procedure.
- Close the access door.