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Personal injury or death can result from a fire. Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. Clean up all leaked or spilled fuel. Do not smoke while working on the fuel system. Turn the disconnect switch OFF or disconnect the battery when changing fuel filters. |
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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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
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| Illustration 1 | g00646956 |
- Open the engine compartment. The secondary fuel filter assembly is on the left side of the engine compartment.
- To drain upper filter (1) (inverted filter), place a suitable container under the drain valves. Open drain valve (3) first. Then, immediately open drain valve (2) and allow the fuel to drain into the suitable container. When the fuel stops draining, keep the drain valves open. Loosen the inverted filter for 1/4 turn. As the filter is loosened, additional fuel may drain from the drain valves. Keep turning the filter by 1/4 turns until fuel does not drain from the drain valves. Then close the drain valves and properly dispose of the fuel.
Note: Make sure that the drain valves are opened in the proper order. If you open the wrong drain valve first, an air lock in the fuel system may occur. This will not allow fuel to drain from the upper filter.
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| Illustration 2 | g00646961 |
Note: This machine is equipped with two secondary spin-on filters on a single filter base. The upper filter is upside-down. Always drain the inverted filter before you remove either filter.
- Hand tighten the upper filter until the seal 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 fuel filter that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten the fuel 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 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.
- Remove lower filter (4) .
Note: Lower filter (4) has not been drained. The filter contains fuel. When you remove the lower filter, use caution in order to avoid spilling the fuel.
- Inspect the fuel filter element for debris by cutting the filter open. Discard the used fuel filter element properly.
- Clean the mounting base of the fuel filter. Make sure that all of the old seal is removed from the mounting base of the fuel filter.
- Apply a thin coat of clean diesel fuel to the sealing surface of the new fuel filter element. Install a new fuel filter element hand tight until the seal of the fuel filter 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 fuel filter that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten the fuel filter, use the rotation index marks as a guide.
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| Illustration 3 | g00101318 |
- 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".
- Close the engine compartment.