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388
SERVICING AND MAINTENANCE
Drain the fuel/water separator filters when the Water In
Fuel Indicator Light is ON. Within 10 minutes of vehicle
shutdown, turn the engine mounted filter drain valve
(located on the side of the filter assembly)
counterclockwise 1/4 turn, and turn the under body
mounted filter drain valve (located on the bottom of the
filter assembly) counterclockwise 1 full turn. Then turn the
ignition switch to the ON position, and allow any
accumulated water to drain. Leave the drain valve open
until all water and contaminants have been removed.
When clean fuel is visible, close the drain valve following
these guidelines:
1.
Rotate the drain clockwise to close until you feel
resistance from the internal seal.
2.
Continue turning the drain 1/2 of a turn to properly
compress the seal.
NOTE:
Over-compression of the seal due to over-tightening of the
drain will damage the seal, cause a leak, and require the
entire sensor to be replaced.
3.
Turn the ignition switch to OFF.
The sensor drain should not be over-tightened during
normal service operations to avoid internal damage and
future fuel leaks. The drain should be closed and secured
without the use of tools.
If more than a couple ounces/milliliters of fuel have been
drained, follow the directions
page 390.
Ú
E
M
F
F
NGINE
OUNTED
UEL
ILTER
R
— D
E
EPLACEMENT
IESEL
NOTE:
Using a fuel filter that does not meet the manufac-
turer's filtration and water separating requirements
can severely impact fuel system life and reliability.
The engine mounted filter housing is equipped with a
No-Filter-No-Run (NFNR) feature. Engine will not run if:
No filter is installed.
Inferior/Non-approved filter is used. Use of OEM
filter is required to ensure vehicle will run.
Engine Mounted Fuel Filter Assembly
1 — Drain Valve
NGINE
Diesel fuel will damage blacktop paving surfaces.
Drain the filter into an appropriate container.
Do not prefill the fuel filter when installing a new fuel
filter. There is a possibility debris could be introduced
into the fuel filter during this action. It is best to
install the filter dry and allow the in-tank lift pump to
prime the fuel system.
1.
Ensure engine is turned off.
2.
Place drain pan under the fuel filter drain hose.
3.
Open the water drain valve a quarter turn counter-
clockwise and completely drain fuel and water into
the approved container.
4.
Close the water drain valve.
5.
Remove lid using a socket or strap wrench. Rotate
counterclockwise for removal. Remove used o-ring
and discard it.
6.
Remove the used filter cartridge from the housing
and dispose of according to your local regulations.
CAUTION!
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