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SERVICING AND MAINTENANCE 349
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
counterclockwise 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.
7. Wipe clean the sealing surfaces of the lid and
housing.
8. Install new o-ring back into ring groove on the
filter housing and lubricate with clean engine
oil.
9. Remove new filter cartridge from plastic bag
and install into housing.
NOTE:
Do not remove cartridge from bag until you reach
this step in order to keep cartridge clean.
10. Push down on the cartridge to ensure it is
properly seated. Do not pre-fill the filter
housing with fuel.
11. Install lid onto housing and tighten to 22.5 ft lb
(30.5 N.m). Do not overtighten the lid.
12. Prime the engine, then start the engine and
confirm there are no leaks Ú page 350.
UNDERBODY MOUNTED FUEL FILTER
R
EPLACEMENT
NOTE:
Using a fuel filter that does not meet the manu-
facturer's filtration and water separating
requirements can severely impact fuel system
life and reliability.
The underbody mounted filter housing will
cause the engine not to run if:
a. No filter is installed.
Underbody Mounted Fuel Filter Assembly
1. Ensure engine is turned off.
2. Place drain pan under the fuel filter drain hose.
3. Open the water drain valve one full turn
counterclockwise 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.
7. Wipe clean the sealing surfaces of the lid and
housing.
1 — Drain Valve
CAUTION!
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.
8
22_DPF_OM_EN_USC_t.book Page 349
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