Ram 4500 Chassis Cab 2018 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 369

2. Lift the air cleaner cover to access the air cleaner filter. 3. Remove the air cleaner filter element from the housingassembly.
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
370 SERVICING AND MAINTENANCE

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.
2. Install the air cleaner cover onto the housing assembly locating 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
(Continued)
WARNING! (Continued)
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.
• 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.
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SERVICING AND MAINTENANCE 371

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.
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.
372 SERVICING AND MAINTENANCE

2. With the glove compartment door open, remove theglove 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. 3. There are glove compartment travel stops on both sides
of 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.
Right Side Of Glove Compartment
1 — Glove Compartment Tension Tether
2 — Glove Compartment Door
Glove Compartment
1 — Glove Compartment Travel Stops
2 — Glove Compartment Tension Tether
3 — Glove Compartment Door
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SERVICING AND MAINTENANCE 373

5. Remove the filter cover by pushing in on the finger tabson each end of the filter cover.
Filter Cover
Finger Tabs
374 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.
Finger TabCabin Air Filter8
SERVICING AND MAINTENANCE 375

8. Reinstall the glove compartment on the hinges.
9. Pull the tension tether outward and reinstall the glovecompartment past the travel stops by pushing in on the
glove compartment sides. 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.
Glove Compartment Installation
Right Side Of Glove Compartment
1 — Glove Compartment Tension Tether
2 — Glove Compartment Travel Stop
376 SERVICING AND MAINTENANCE

Front Driveshaft Lubrication — 2500/3500
(Four-Wheel Drive Models Only)
Lubricate the front driveshaft grease fitting at each oil
change.
The grease fitting is located at the rear of the front
driveshaft, near the centering mechanism of double cardan
joint. Refer to the “Maintenance Plan” for the proper
maintenance intervals. Use Mopar Type MS-6560 (lithium-
based grease), or equivalent.
Accessory Drive Belt Inspection
WARNING!
•Do not attempt to inspect an accessory drive belt
with vehicle running.
(Continued)
Front Drive Shaft Double Cardan Joint
Double Cardan Joint
1 — Double Cardan Joint
2 — Grease Fitting
3 — Exploded View – Grease Fitting
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SERVICING AND MAINTENANCE 377

WARNING!(Continued)
•When working near the radiator cooling fan, discon-
nect the fan motor lead. The fan is temperature
controlled and can start at any time regardless of
ignition mode. You could be injured by the moving
fan blades.
• You can be badly injured working on or around a
motor vehicle. Only do service work for which you
have the knowledge and the proper equipment. If
you have any doubt about your ability to perform a
service job, take your vehicle to a competent me-
chanic.
When inspecting accessory drive belts, small cracks that
run across ribbed surface of belt from rib to rib, are
considered normal. These are not a reason to replace belt.
However, cracks running along a rib (not across) are not
normal. Any belt with cracks running along a rib must be
replaced. Also have the belt replaced if it has excessive
wear, frayed cords or severe glazing. Conditions that would require replacement:
•
Rib chunking (one or more ribs has separated from belt
body)
• Rib or belt wear
• Longitudinal belt cracking (cracks between two ribs)
• Belt slips
• “Groove jumping (belt does not maintain correct posi-
tion on pulley)
• Belt broken (note: identify and correct problem before
new belt is installed)
Accessory Belt (Serpentine Belt)
378 SERVICING AND MAINTENANCE