Ram 3500 Chassis Cab 2018 Owner's Manual

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
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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

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.
• 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.
Double Cardan Joint
1 — Double Cardan Joint
2 — Grease Fitting
3 — Exploded View – Grease Fitting
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SERVICING AND MAINTENANCE 375

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) •
Noise (objectionable squeal, squeak, or rumble is heard
or felt while drive belt is in operation)
Some conditions can be caused by a faulty component such
as a belt pulley. Belt pulleys should be carefully inspected
for damage and proper alignment.
Belt replacement on some models requires the use of
special tools, we recommend having your vehicle serviced
at an authorized dealer.
Body Lubrication
Locks and all body pivot points, including such items as
seat tracks, door hinge pivot points and rollers, liftgate,
tailgate, decklid, sliding doors and hood hinges, should be
lubricated periodically with a lithium based grease, such as
Mopar Spray White Lube to assure quiet, easy operation
and to protect against rust and wear. Prior to the applica-
tion of any lubricant, the parts concerned should be wiped
clean to remove dust and grit; after lubricating excess oil
and grease should be removed. Particular attention should
also be given to hood latching components to ensure
proper function. When performing other underhood ser-
vices, the hood latch, release mechanism and safety catch
should be cleaned and lubricated.
Accessory Belt (Serpentine Belt)
376 SERVICING AND MAINTENANCE

The external lock cylinders should be lubricated twice a
year, preferably in the Fall and Spring. Apply a small
amount of a high quality lubricant, such as Mopar Lock
Cylinder Lubricant directly into the lock cylinder.
Windshield Wiper Blades
Clean the rubber edges of the wiper blades and the
windshield periodically with a sponge or soft cloth and a
mild nonabrasive cleaner. This will remove accumulations
of salt or road film.
Operation of the wipers on dry glass for long periods may
cause deterioration of the wiper blades. Always use washer
fluid when using the wipers to remove salt or dirt from a
dry windshield.
Avoid using the wiper blades to remove frost or ice from
the windshield. Keep the blade rubber out of contact with
petroleum products such as engine oil, gasoline, etc.
NOTE:Life expectancy of wiper blades varies depending
on geographical area and frequency of use. Poor perfor-
mance of blades may be present with chattering, marks,
water lines or wet spots. If any of these conditions are
present, clean the wiper blades or replace as necessary. The wiper blades and wiper arms should be inspected
periodically, not just when wiper performance problems
are experienced. This inspection should include the follow-
ing points:
•
Wear Or Uneven Edges
• Foreign Material
• Hardening Or Cracking
• Deformation Or Fatigue
If a wiper blade or wiper arm is damaged, replace the
affected wiper arm or blade with a new unit. Do not
attempt to repair a wiper arm or blade that is damaged.
Wiper Blade Removal/Installation
CAUTION!
Do not allow the wiper arm to spring back against the
glass without the wiper blade in place or the glass may
be damaged.
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SERVICING AND MAINTENANCE 377

1. Lift the wiper arm to raise the wiper blade off of theglass, until the wiper arm is in the full up position. 2. To disengage the wiper blade from the wiper arm, flip
up the locking tab.
Windshield Wiper Arm
1—Wiper
2 — Locking Tab
3—WiperArm
Wiper Locking Assembly
1—Wiper
2 — Locking Tab
378 SERVICING AND MAINTENANCE