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104
Maintenance Section
Fuel System Primary Filter (Water Separator) Element - Replace
5. If the engine starts and the engine runs rough or
the engine misfires, operate at low idle until the
engine is running smoothly. If the engine cannot
be started, or if the engine continues to misfire or
smoke, repeat Step 2.
The fuel system can also be primed by using the key
switch. Turn the key to the ON position for 2 minutes.
After 2 minutes the fuel system should be primed. If
necessary, by cycling the key switch the system will
prime again for 2 minutes.
Fuel System Primary Filter
(Water Separator Element -
Replace
Fuel leaked or spilled onto hot surfaces or electri-
cal components can cause a fire. To help prevent
possible injury, turn the start switch off when
changing fuel filters or water separator elements.
Clean up fuel spills immediately.
NOTICE
Do not allow dirt to enter the fuel system. Thoroughly
clean the area around a fuel system component that
will be disconnected. Fit a suitable cover over any
disconnected fuel system components.
NOTICE
Do not fill fuel filters with fuel before installing
them. The fuel will not be filtered and could be
contaminated. Contaminated fuel will cause ac-
celerated wear to fuel system parts. The fuel sys-
tem should be primed prior to starting the engine.
Water in the fuel can cause the engine to run rough.
Water in the fuel may cause an electronic unit injector
to fail. If the fuel has been contaminated with water,
the element should be changed before the regularly
scheduled interval.
The primary filter/water separator also provides
filtration to help extend the life of the secondary fuel
filter. The element should be changed regularly. If a
vacuum gauge is installed, the primary filter/water
separator should be changed at 50 kPa to 70 kPa
(7.25 psi to 10.15 psi).
i06614133
Illustration 91
1. Close the main fuel supply valve.
2. Place a suitable container below the primary fuel
filter to catch any fluid that may spill. Clean any
split fluid.
3. Clean the outside of the primary fuel filter.
4. Using a suitable tool, remove the spin on filter (4)
from filter base (1). Discard old filter element.
5. Ensure the seal surface (2) is clean. Apply clean
diesel fuel to the O ring seal (3) on the new spin on
filter.
6. Install the new spin on filter to the filter base (1).
Spin on the filter until the O ring seal (3) contact
the sealing surface (2). Then, rotate the spin on
filter ¾ of a full turn.
7. The secondary fuel filter should be replaced when
the primary fuel filter is replaced. For more
information refer to this Operation and
Maintenance Manual, "Fuel System Secondary
Filter - Replace".
8. Dispose of the fluid and old filter in accordance
with local regulations.
M0076814-03
g06046186
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