2018 Ram 3500 Chassis Cab Owner's Manual

NOTE:Be sure to follow the “Severe Duty Conditions”
maintenance interval if applicable.
WARNING!
The air induction system (air cleaner, hoses, etc.) can
provide a measure of protection in the case of engine
backfire. Do not remove the air induction system (air
cleaner, hoses, etc.) unless such removal is necessary
for repair or maintenance. Make sure that no one is
near the engine compartment before starting the ve-
hicle with the air induction system (air cleaner, hoses,
etc.) removed. Failure to do so can result in serious
personal injury.
Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner filters varies
considerably. Only high quality filters should be used to
assure most efficient service. Mopar engine air cleaner
filters are a high quality filter and are recommended.
Engine Air Cleaner Filter Inspection and
Replacement
Inspect engine air cleaner filter for dirt and or debris, if you
find evidence of either dirt or debris you should change
your air cleaner filter. Engine Air Cleaner Filter Removal
1. Release the spring clips from the air cleaner cover.
Air Cleaner Filter Cover
1 — Clean Air Hose Clamp
2 — Spring Clips
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SERVICING AND MAINTENANCE 367

2. Lift the air cleaner cover to access the air cleaner filter. 3. Remove the air cleaner filter element from the housingassembly.
Engine Air Cleaner Filter Installation
NOTE: Inspect and clean the housing if dirt or debris is
present before replacing the air filter element.
1. Install the air cleaner filter element into the housing assembly with the air cleaner filter inspection surface
facing downward.
Open Air Cleaner Filter Assembly
1 — Air Cleaner Cover
2 — Air Cleaner FilterAir Cleaner Filter
1 — Air Cleaner Filter
2 — Air Cleaner Filter Inspection Surface
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2. Install the air cleaner cover onto the housing assemblylocating tabs.
3. Latch the spring clips and lock the air cleaner cover to the housing assembly.
Air Conditioner Maintenance
For best possible performance, your air conditioner should
be checked and serviced by an authorized dealer at the
start of each warm season. This service should include
cleaning of the condenser fins and a performance test.
Drive belt tension should also be checked at this time.
WARNING!
•Use only refrigerants and compressor lubricants ap-
proved by the manufacturer for your air conditioning
system. Some unapproved refrigerants are flam-
mable and can explode, injuring you. Other unap-
proved refrigerants or lubricants can cause the sys-
tem to fail, requiring costly repairs. Refer to
Warranty Information Book, for further warranty
information.
(Continued)
WARNING! (Continued)
•The air conditioning system contains refrigerant un-
der high pressure. To avoid risk of personal injury or
damage to the system, adding refrigerant or any
repair requiring lines to be disconnected should be
done by an experienced technician.
CAUTION!
Do not use chemical flushes in your air conditioning
system as the chemicals can damage your air condition-
ing components. Such damage is not covered by the
New Vehicle Limited Warranty.
Refrigerant Recovery And Recycling R134a — If
Equipped
R-134a Air Conditioning Refrigerant is a hydrofluoro-
carbon (HFC) that is an ozone-friendly substance. The
manufacturer recommends that air conditioning service be
performed by an authorized dealer or other service facili-
ties using recovery and recycling equipment.
NOTE: Use only manufacturer approved A/C system PAG
compressor oil and refrigerants.
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SERVICING AND MAINTENANCE 369

Refrigerant Recovery And Recycling — R–1234yf
R–1234yf Air Conditioning Refrigerant is a hydrofluo-
roolefin (HFO) that is endorsed by the Environmental
Protection Agency and is an ozone-friendly substance with
a low global-warming potential. The manufacturer recom-
mends that air conditioning service be performed by an
authorized dealer using recovery and recycling equipment.
NOTE:Use only manufacturer approved A/C system
PAG compressor oil, and refrigerants.
Cabin Filter Replacement (A/C Air Filter)
Refer to the “Maintenance Plan” for the proper mainte-
nance intervals.
WARNING!
Do not remove the cabin air filter while the vehicle is
running, or while the ignition is in the ACC or ON/
RUN mode. With the cabin air filter removed and the
blower operating, the blower can contact hands and
may propel dirt and debris into your eyes, resulting in
personal injury. The cabin air filter is located in the fresh air inlet behind the
glove compartment. Perform the following procedure to
replace the filter:
1. Open the glove compartment and remove all contents.
2. With the glove compartment door open, remove the
glove compartment tension tether and tether clip by
sliding the clip toward the face of the glove compart-
ment door. Lift the clip out of glove compartment door
and release into dash panel.
Right Side Of Glove Compartment
1 — Glove Compartment Tension Tether
2 — Glove Compartment Door
370 SERVICING AND MAINTENANCE

3. There are glove compartment travel stops on both sidesof the glove compartment door, push inward on both
sides of the glove compartment to release the glove
compartment travel stops. 4. Disengage the glove compartment door from its hinges
by opening the glove compartment past the travel stop
and pulling it toward you.
5. Remove the filter cover by pushing in on the finger tabs on each end of the filter cover.
Glove Compartment
1 — Glove Compartment Travel Stops
2 — Glove Compartment Tension Tether
3 — Glove Compartment DoorFilter Cover
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SERVICING AND MAINTENANCE 371

Finger TabsFinger Tab
372 SERVICING AND MAINTENANCE

6. Remove the cabin air filter by pulling it straight out ofthe housing.
7. Install the cabin air filter with the arrow on the filter pointing toward the floor. When installing the filter
cover, press on each end until you hear an audible click.
CAUTION!
The cabin air filter is identified with an arrow to
indicate airflow direction through the filter. Failure to
properly install the filter will result in the need to
replace it more often. 8. Reinstall the glove compartment on the hinges.
9. Pull the tension tether outward and reinstall the glove
compartment past the travel stops by pushing in on the
glove compartment sides.
Cabin Air Filter
Glove Compartment Installation
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SERVICING AND MAINTENANCE 373

NOTE:Ensure the glove compartment door hinges and
glove compartment travel stops are fully engaged.
10. Reattach the glove compartment tension tether by inserting the tether clip in the glove compartment and
sliding the clip away from the face of the glove
compartment door.
Front Driveshaft Lubrication — 2500/3500
(Four-Wheel Drive Models Only)
Lubricate the front driveshaft grease fitting at each oil
change.
Right Side Of Glove Compartment
1 — Glove Compartment Tension Tether
2 — Glove Compartment Travel Stop
Front Drive Shaft Double Cardan Joint
374 SERVICING AND MAINTENANCE