RAM 2021 RAM 3500 User Manual

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374 SERVICING AND MAINTENANCE

1. Ensure engine is turned off.

2. Place drain pan under the fuel filter drain hose.

. O

pen the water drain valve a quarter turn

ounterclockwise and completely drain fuel

and water into the approved container.

4. Close the water drain valve.

. Remove lid using a socket or strap wrench.

otate counterclockwise for removal. Remove

used o-ring and discard it.

6. Remove the used filter cartridge from the

ousing and dispose of according to your local

regulations.

7. Wipe clean the sealing surfaces of the lid and

ousing.

8. Install new o-ring back into ring groove on the

ilter housing and lubricate with clean engine

oil.

9. Remove new filter cartridge from plastic bag

nd install into housing.

NOTE:

Do not remove cartridge from bag until you reach

is 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

lbs (30.5 N.m). Do not overtighten the lid.

12. P

rime the engine, then start the engine and

confirm there are no leaks Ú page 375.

UNDERBODY MOUNTED FUEL FILTER

EPLACEMENT — DIESEL ENGINE

NOTE:

 Using a fuel filter that does not meet the manu-

facturer's filtration and water separating

quirements can severely impact fuel system

life and reliability.

 The underbody mounted filter housing will

cause the engine not to run if:

 No filter is installed.

Underbody Mounted Fuel Filter Assembly

1. Ensure engine is turned off.

. P

lace drain pan under the fuel filter drain hose.

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.

1 — Drain Valve