2021 RAM CHASSIS CAB air filter

368SERVICING AND MAINTENANCE
ENGINE OIL
Engine Oil Selection — Gasoline Engine

For best performance and maximum protection
under all types of operating conditions, the
manufacturer only recommends engine oils that
are API Certified and meet the requirements of
FCA Material Standard MS-12633.

NOTE:
Hemi engines (6.4L) at times can tick right after
startup and then quiet down after approxi -
mately 30 seconds. This is normal and will not
harm the engine. This characteristic can be
caused by short drive cycles. For example, if the
vehicle is started then shut off after driving a
short distance. Upon restarting, you may experi -
ence a ticking sound. Other causes could be if
the vehicle is unused for an extended period of
time, incorrect oil, extended oil changes or
extended idling. If the engine continues to tick
or if the Malfunction Indicator Light (MIL) comes
on, see the nearest authorized dealer.
Engine Oil Selection — Diesel Engine
For best performance and maximum protection
under all types of operating conditions, the
manufacturer only recommends engine oils
that are API CK-4 certified and meet the requirements of FCA US LLC. Use Mopar or an
equivalent oil meeting FCA Material Standard
MS-10902. Products meeting Cummins CES
20081 may also be used. The identification of
these engine oils are typically located on the
back of the oil container.
American Petroleum Institute (API) Engine
Oil Identification Symbol

This symbol means that the oil has been
certified by the American Petroleum
Institute (API). The manufacturer only
recommends API Certified engine oils.

This symbol certifies 0W-20, 5W-20, 0W-30,
5W-30 and 10W-30 engine oils.
For diesel engines, oils with a high ash content
may produce damaging deposits on cylinder
head valves and/or after-treatment system
damage. A maximum sulfated ash content of
1.00 mass % is recommended for all oil used in
the engine.
The same oil change interval is to be followed
for synthetic oil as for petroleum-based oil. Also,
synthetic oil must meet the same performance
specifications as petroleum oil.
Synthetic Engine Oils
You may use synthetic engine oils provided the
recommended oil quality requirements are met,
and the recommended maintenance intervals
for oil and filter changes are followed.
Synthetic engine oils which do not have both the
engine oil certification mark and the correct SAE
viscosity grade number should not be used.
Materials Added To Engine Oil
The manufacturer strongly recommends
against the addition of any additives (other than
leak detection dyes) to the engine oil. Engine oil
is an engineered product and its performance
may be impaired by supplemental additives.
CAUTION!
Do not use chemical flushes in your engine oil
as the chemicals can damage your engine.
Such damage is not covered by the New
Vehicle Limited Warranty.

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SERVICING AND MAINTENANCE369
Disposing Of Used Engine Oil And Oil
Filters
Care should be taken in disposing of used
engine oil and oil filters from your vehicle.
Used oil and oil filters, indiscriminately
discarded, can present a problem to the
environment. Contact an authorized dealer,
service station or governmental agency for
advice on how and where used oil and oil filters
can be safely discarded in your area.
ENGINE OIL FILTER
The engine oil filter should be replaced with a
new filter at every engine oil change.
Engine Oil Filter Selection
A full-flow type disposable oil filter should
be used for replacement. The quality of
replacement filters varies considerably.
Only high quality Mopar certified filters should
be used.
ENGINE AIR CLEANER FILTER
For the proper maintenance intervals
Úpage 354.
NOTE:
Be sure to follow the “Severe Duty Conditions”
maintenance interval if applicable. Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner
filters varies considerably. Only high quality
filters should be used to ensure most efficient
service. Mopar engine air cleaner filters are a
high quality filter and are recommended.
Engine Air Cleaner Filter Inspection And
Replacement — Gasoline Engine
Inspect engine air cleaner filter for dirt and or
debris, if you find evidence of either dirt or
debris you should change your engine air
cleaner filter.
NOTE:
When replacing the engine air cleaner filter on
vehicles equipped with a 6.4L gasoline engine,
replace with a dry (non-oiled) filter only.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 vehicle with the air induction
system (air cleaner, hoses, etc.) removed.
Failure to do so can result in serious personal
injury.
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370SERVICING AND MAINTENANCE
Engine Air Cleaner Filter Removal

1. With suitable tool fully loosen (six)
fasteners on engine air cleaner filter.

Engine Air Cleaner Filter

2. Lift the engine air cleaner filter cover to access the engine air cleaner filter.
3. Remove the engine air cleaner filter from the housing assembly.
Engine Air Cleaner Filter Assembly

Engine Air Cleaner Filter Installation
NOTE:
Inspect and clean the housing if dirt or debris is
present before replacing the engine air cleaner
filter.

1. Install the engine air cleaner filter into the housing assembly with the engine air
cleaner filter inspection surface facing
downward.

2. Install the engine air cleaner filter cover onto the housing assembly. 3. Tighten the fasteners (six) on the engine air
cleaner filter assembly.
Engine Air Cleaner Filter Inspection and
Replacement — Diesel Engine
Inspect engine air cleaner filter for dirt and or
debris, if you find evidence of either dirt or
debris you should change your engine air
cleaner filter.
Engine Air Cleaner Filter Removal

1. Remove the screws from the engine air cleaner filter cover.

Engine Air Cleaner Filter Cover

1 — Fasteners
2 — Air Hose Clamp
3 — Engine Air Cleaner Filter Cover
1 — Engine Air Cleaner Filter Cover
2 — Engine Air Cleaner Filter
1 — Engine Air Cleaner Filter Cover
2 — Screws

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SERVICING AND MAINTENANCE371
2. Lift the engine air cleaner filter cover to
access the engine air cleaner filter.
3. Remove the engine air cleaner filter from the housing assembly.

Engine Air Cleaner Filter
Engine Air Cleaner Filter Installation
NOTE:
Inspect and clean the housing if dirt or debris is
present before replacing the engine air cleaner
filter.

1. Install the engine air cleaner filter into the
housing assembly with the engine air
cleaner filter inspection surface facing
downward.

2. Install the engine air cleaner filter cover onto the housing assembly locating tabs.
3. Install screws to secure the engine air cleaner filter 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.
1 — Engine Air Cleaner Filter
2 — Engine Air Cleaner Filter Inspection Surface
WARNING!
Use only refrigerants and compressor lubri -
cants approved by the manufacturer for
your air conditioning system. Some unap -
proved refrigerants are flammable and can
explode, injuring you. Other unapproved
refrigerants or lubricants can cause the
system to fail, requiring costly repairs.
Refer to Warranty Information Book, for
further warranty information.
The air conditioning system contains refrig -
erant under 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 conditioning components.
Such damage is not covered by the New
Vehicle Limited Warranty.
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372SERVICING AND MAINTENANCE
Refrigerant Recovery And Recycling
R-134a — If Equipped
R-134a Air Conditioning Refrigerant is
a hydrofluorocarbon (HFC) that is an
ozone-friendly substance. The manufacturer
recommends that air conditioning service be
performed by an authorized dealer or other
service facilities using recovery and recycling
equipment.
NOTE:
Use only manufacturer approved A/C system
PAG compressor oil and refrigerants.
Refrigerant Recovery And Recycling
R-1234yf — If Equipped
R-1234yf Air Conditioning Refrigerant is a
hydrofluoroolefin (HFO) that is endorsed
by the Environmental Protection Agency and
is an ozone-friendly substance with a low
global-warming potential. The manufacturer
recommends 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 Air Filter Replacement
For the proper maintenance intervals
Úpage 354.
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 compartment
door. Lift the clip out of glove compartment
door and release into dash panel.

Right Side Of Glove Compartment

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.
1 — Glove Compartment Door
2 — Glove Compartment Tension Tether

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SERVICING AND MAINTENANCE373
3. There are travel stops on both sides of the
glove compartment. Push inward on right
side of the glove compartment travel stop to
disengage the stop. Then pull the right of
the glove compartment outward (away from
the hinge) to disengaging the right side of
the compartment from the hinge. Continue
by removing the left side from the hinge by
slightly lowering the compartment while
pulling outward until it is completely
disengaged from the hinge.

Glove Compartment
4. Remove the filter cover by pushing in on the
finger tabs on each end of the filter cover.

Filter Cover
Filter Cover Removal
5. Remove the cabin air filter by pulling it
straight out of the housing.

Cabin Air Filter

6. 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.
7. Reinstall the glove compartment on the hinges.
1 — Glove Compartment Travel Stop
2 — Glove Compartment Tension Tether
3 — Glove Compartment Door
1 — Finger Tabs
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.
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378SERVICING AND MAINTENANCE
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.
NOTE:
Water In Fuel (WIF) sensor is re-usable. Service
kit comes with new o-ring for filter canister and
WIF sensor.
PRIMING IF THE ENGINE HAS RUN OUT
O
F FUEL

1. Add a substantial amount of fuel to the
tank, approximately 2 to 5 gal (8L to 19L).
2. Three priming cycles must be completed.
Turn ignition to the RUN position and wait
approximately 30 seconds. This will activate
the in tank fuel pump. Turn the ignition
switch to the off position, and leave off for at
least 30 seconds. Repeat this procedure
three times before cranking the engine.
3. Start the engine using the “Normal Starting” procedure Ú page 119.
4. Once the engine starts, allow the engine to idle for a minimum of 30 seconds.
NOTE:
The engine may run rough until the air is forced
from all the fuel lines. NOTE:
A maximum blend of 5% biodiesel, meeting
ASTM specification D-975 may be used with
your Cummins diesel engine. (Chassis Cab
models not configured with B20 capability.)
A maximum blend of 20% biodiesel, meeting
ASTM specification D-7467 may be used with
your Cummins diesel engine. (Pickup models
and Chassis Cab models configured with B20
capability.)
WARNING!
Do not open the high pressure fuel system
with the engine running. Engine operation
causes high fuel pressure. High pressure fuel
spray can cause serious injury or death.
CAUTION!
Do not engage the starter motor for more
than 15 seconds at a time. Allow two minutes
between the cranking intervals.
WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable under
certain conditions and be hazardous or
explosive when mixed with diesel fuel.
CAUTION!
Due to lack of lubricants in alcohol or
gasoline, the use of these fuels can cause
damage to the fuel system.

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392SERVICING AND MAINTENANCE
Air Cleaner Assembly
Inspect air cleaner housing for proper assembly
and fit. Make certain that the air cleaner is
properly positioned and that the cover is tight.
Check all hoses leading to the air cleaner for
tightness. The air filter element must also be
clean and serviced according to the instructions
outlined in the Scheduled Maintenance section
of this manual.
Tampering With Noise Control System
Prohibited

Federal law prohibits the following acts or the
causing thereof: (1) the removal or rendering
inoperative by any person, other than for purposes
of maintenance, repair, or replacement, of any
device or element of design incorporated into any
new vehicle for the purpose of noise control prior to
its sale or delivery to the ultimate purchaser or while
it is in use, or (2) the use of the vehicle after such
device or element of design has been removed or
rendered inoperative by any person.

Among those acts presumed to constitute
tampering are the acts listed below. AIR CLEANER

Removal of the air cleaner.
Removal of the air cleaner filter element from
the air cleaner housing.
Removal of the air ducting.
EXHAUST SYSTEM
Removal or rendering inoperative exhaust
system components including the muffler or
tailpipe.
ENGINE COOLING SYSTEM
Removal or rendering inoperative the fan
clutch.
Removal of the fan shroud.
Noise Emission Warranty
The manufacturer warrants that this vehicle as
manufactured by the manufacturer, was
designed, built and equipped to conform at the
time it left the manufacturer's control with all
applicable U.S. EPA Noise Control Regulations.
This warranty covers this vehicle as designed,
built and equipped by the manufacturer, and is
not limited to any particular part, component or
system of the vehicle manufactured by the
manufacturer. Defects in design, assembly or in
any part, component or system of the vehicle as
manufactured by the manufacturer, which, at
the time it left the manufacturer's control,
caused noise emissions to exceed Federal
standards, are covered by this warranty for the
life of the vehicle.

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