82
Maintenance Section
Fuel System Secondary Filter - Replace
Inspect the gasket for damage and for
deterioration. Replace the gasket, if necessary.
7. Install the gasket. Lubricate the gasket with
clean diesel fuel.
NOTICE
The primary filter/water separator maybe prefilled with
fuel to avoid rough running/stalling of the engine due
to air. Do not fill the secondary filter with fuel before
installation. The fuel would not be filtered and could
be contaminated. Contaminated fuel will cause accel-
erated wear to fuel system parts.
8. Install a new element in the can. The can may
be filled with fuel at this time.
9. Install the can on the base. Tighten the can by
hand. Do not use tools in order to tighten the can.
NOTICE
The water separator is under suction during normal
engine operation. Ensure that the vent plug is tight-
ened securely to help prevent air from entering the fu-
el system.
10. Open the main fuel supply valve.
11. Start the engine and check for leaks. Run the
engine for one minute. Stop the engine and
check for leaks again.
Leaks are difficult to detect while the engine is
running. The primary filter/water separator is
under suction. A leak will allow air to enter the
fuel. The air in the fuel can cause low power due
to aeration of the fuel. If air enters the fuel, ensure
that all components are properly tightened.
i01007602
Fuel System Secondary Filter -
Replace
SMCS Code: 1261-510-SE
Fuel leaked or spilled onto hot surfaces or elec-
trical components can cause a fire. To help pre-
vent possible injury, turn the start switch off when
changing fuel filters or water separator elements.
Clean up fuel spills immediately.
1. Stop the engine.
2. Turn off the start switch, or disconnect the battery
(starting motor) when maintenance is performed
on fuel filters.
3. Shut off the fuel tank supply valve to the engine.
NOTICE
Use a suitable container to catch any fuel that might
spill. Clean up any spilled fuel immediately.
4. Unlock the fuel priming pump (if equipped). This
relieves any residual pressure in the fuel system.
5. Remove the used fuel filter. Use a cloth, or use a
container to catch excess fuel.
6. Clean the gasket sealing surface of the fuel
filter base. Ensure that all of the old gasket is
removed.
7. Apply clean diesel fuel to the new fuel filter
gasket.
NOTICE
Do not fill the secondary fuel filter with fuel before in-
stalling. The fuel would not be filtered and could be
contaminated. Contaminated fuel will cause acceler-
ated wear to fuel system parts.
8. Install a new fuel filter, and tighten the fuel filter
until the gasket contacts the base.
9. Tighten the fuel filter by hand according to the
instructions that are shown on the fuel filter.
Do not overtighten the fuel filter.
10. Lock the fuel priming pump (if equipped). Open
the fuel tank supply valve.
11. If the engine stalls, refer to the Operation and
Maintenance Manual, “Fuel System - Prime” topic
(Maintenance Section) for more information.
i00909035
Fuel System Water Separator
- Drain
SMCS Code: 1263-543
Fuel leaked or spilled onto hot surfaces or electri-
cal components can cause a fire.
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