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Maintenance Section
Fuel System Secondary Filter
Replace
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.
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, "Caterpillar
Dealer Service Tool Catalog" for tools and supplies
suitable to collect and contain fluids on Caterpillar
products.
Dispose of all fluids according to local regulations and
mandates.
Illustration 258 g01015144
The secondary fuel filter is located on the front of the
engine.
1. Park the machine on level ground. Fully retract and
fully lower the boom. Move the transmission control
to the NEUTRAL position and engage the parking
brake. Shut off the engine.
2. Open the engine enclosure.
3. Clean the outside of the secondary fuel filter.
4. Remove cap (1) from the secondary fuel filter.
5. Remove the white plunger that is located below cap
(1) in order to prevent fuel from spilling down the
side of the filter when you remove the filter.
6. Internally, remove the fuel filter plug from the
secondary fuel filter. Remove any sediment from
the sediment chamber. Reinstall the plug. Reinstall
both the cap and the nut onto the secondary fuel
filter.
7. Valve (2) is located at the bottom of the fuel filter
element. Open valve (2) in order to drain fuel or
sediment from the fuel filter element.
8. Unscrew retaining ring (3). Remove filter element
(4) from filter base (5).
9. Clean the gasket sealing surface on filter base (5).
10. Lubricate the seals on the replacement filter
element with clean diesel fuel.
11. Install the new filter element and hand tighten the
retaining ring. Do not overtighten the retaining ring.
Note: The primary fuel filter should be changed
whenever the secondary fuel filter is changed. Refer to
Operation and Maintenance Manual, "Fuel System
Water Separator Element - Replace" for further
instructions.
12. Prime the fuel system. Refer to Operation and
Maintenance Manual, "Fuel System - Prime" for
further instructions.
13. Start the engine and check for leaks.
Fuel System Water Separator -
Drain
Personal injury or death may result from failure to
adhere to the following procedures.
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.