2018 Ram 3500 Chassis Cab automatic transmission

CAUTION!
Towing this vehicle in violation of the above require-
ments can cause severe engine and/or transmission
damage. Damage from improper towing is not covered
under the New Vehicle Limited Warranty.
Four-Wheel Drive Models
The manufacturer recommends towing with all wheels
OFFthe ground. Acceptable methods are to tow the vehicle
on a flatbed or with one end of vehicle raised and the
opposite end on a towing dolly.
If flatbed equipment is not available, and the transfer case
is operable, the vehicle may be towed (in the forward
direction, with ALLwheels on the ground), IFthe transfer
case is in NEUTRAL and the transmission is in PARK (for
automatic transmissions) or in gear (NOT in NEUTRAL,
for manual transmissions). Refer to “Recreational Towing”
in “Starting And Operating” for further information and
detailed instructions.
CAUTION!
• Front or rear wheel lifts must not be used (if the
remaining wheels are on the ground). Internal dam-
age to the transmission or transfer case will occur if
a front or rear wheel lift is used when towing.
• Towing this vehicle in violation of the above require-
ments can cause severe transmission and/or transfer
case damage. Damage from improper towing is not
covered under the New Vehicle Limited Warranty.
Emergency Tow Hooks — If Equipped
Your vehicle may be equipped with emergency tow hooks.
NOTE: For off-road recovery, it is recommended to use
both of the front tow hooks to minimize the risk of damage
to the vehicle.
WARNING!
• Do not use a chain for freeing a stuck vehicle. Chains
may break, causing serious injury or death.
• Stand clear of vehicles when pulling with tow hooks.
Tow straps may become disengaged, causing serious
injury.
352 IN CASE OF EMERGENCY

SERVICING AND MAINTENANCE
CONTENTS
SCHEDULED SERVICING .................357
▫ Maintenance Plan ..................... .358
▫ Heavy Duty Use Of The Vehicle ............361
 ENGINE COMPARTMENT .................362
▫ 6.4L Engine ......................... .362
▫ Checking Oil Level — Gas Engine ...........363
▫ Adding Washer Fluid ...................363
▫ Maintenance-Free Battery .................363
 DEALER SERVICE ...................... .364
▫ Engine Oil — Gas Engine .................365
▫ Engine Oil Filter ...................... .366
▫ Engine Air Cleaner Filter .................366
▫ Air Conditioner Maintenance ..............369▫
Front Driveshaft Lubrication — 2500/3500
(Four-Wheel Drive Models Only) ............374
▫ Accessory Drive Belt Inspection ............375
▫ Body Lubrication ..................... .376
▫ Windshield Wiper Blades .................377
▫ Exhaust System ....................... .380
▫ Cooling System ....................... .382
▫ Brake System ........................ .386
▫ Automatic Transmission ..................387
▫ Rear Axle And 4x4 Front Driving Axle
Fluid Level .......................... .390
▫ Transfer Case ........................ .391
 HOISTING ........................... .391
8

Maintenance Plan
Required Maintenance
Refer to the maintenance plan on the following pages for
required maintenance.
At Every Oil Change Interval As Indicated By OilChange Indicator System:
•Change oil and filter.
• Rotate the tires. Rotate at the first sign of irregular
wear, even if it occurs before the oil indicator
system turns on.
• Inspect engine cooling system protection and hoses.
• Inspect exhaust system.
• Inspect engine air cleaner if using in dusty or
off-road conditions.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Inspect battery and clean and tighten terminals as
required.
• Inspect automatic transmission fluid if equipped
with dipstick.
• Inspect brake pads, shoes, rotors, drums, hoses and
park brake.
• Inspect front end, and lubricate — If equipped with
serviceable fittings.
• Lube the front drive shaft fitting (4X4 models only).
358 SERVICING AND MAINTENANCE

Mileage or time passed (whichevercomes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Additional Inspections
Inspect the CV/Universal joints. XX X XX
Inspect front suspension, tie rod ends,
and replace if necessary. XXX X X X X
Inspect the front and rear axle surfaces.
If gear oil leakage is suspected, check
the fluid level. If using your vehicle for
police, taxi, fleet, off-road or frequent
trailer towing, change axle fluid. XXX X X X X
Inspect the brake linings, parking brake
function. XXX X X X X
Additional Maintenance
Replace engine air filter. XX X XX
Replace spark plugs. ** X
Flush and replace the engine coolant at
10 years or 150,000 miles (240,000 km)
whichever comes first. XX
Change the automatic transmission fluid
(AS66RC Transmission Only). XX X
8
SERVICING AND MAINTENANCE 359

Mileage or time passed (whichevercomes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Change the automatic transmission fluid
and sump filter (AS66RC Transmission
Only). XX
Change the automatic transmission fluid
and filter(s) (66RFE Transmission Only),
if using your vehicle for police, taxi,
fleet, or frequent trailer towing. XX
Change the automatic transmission fluid
and filter(s) (66RFE transmission). X
Inspect the transfer case fluid, change
for any of the following: police, taxi,
fleet, or frequent trailer towing. XX X X X
Change the transfer case fluid. X
Inspect and replace PCV valve if neces-
sary. X
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
360 SERVICING AND MAINTENANCE

Refer to “Fluids And Lubricants” in “Technical Specifica-
tions” for further information.
WARNING!
•Use only manufacturer’s recommended brake fluid.
Refer to “Fluids And Lubricants” in “Technical
Specifications” for further information. Using the
wrong type of brake fluid can severely damage your
brake system and/or impair its performance. The
proper type of brake fluid for your vehicle is also
identified on the original factory installed hydraulic
master cylinder reservoir.
• To avoid contamination from foreign matter or mois-
ture, use only new brake fluid or fluid that has been
in a tightly closed container. Keep the master cylin-
der reservoir cap secured at all times. Brake fluid in
a open container absorbs moisture from the air
resulting in a lower boiling point. This may cause it
to boil unexpectedly during hard or prolonged brak-
ing, resulting in sudden brake failure. This could
result in a collision.
(Continued)
WARNING! (Continued)
•Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing the
brake fluid to catch fire. Brake fluid can also damage
painted and vinyl surfaces, care should be taken to
avoid its contact with these surfaces.
• Do not allow petroleum based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
This could result in a collision.
Automatic Transmission
Selection Of Lubricant
It is important to use the proper transmission fluid to
ensure optimum transmission performance and life. Use
only the manufacturer ’s specified transmission fluid. Refer
to “Fluids And Lubricants” in “Technical Specifications”. It
is important to maintain the transmission fluid at the
correct level using the recommended fluid. No chemical
flushes should be used in any transmission; only the
approved lubricant should be used.
8
SERVICING AND MAINTENANCE 387

CAUTION!
Using a transmission fluid other than the manufactur-
er ’s recommended fluid may cause deterioration in
transmission shift quality and/or torque converter
shudder, and will require more frequent fluid and
filter changes. Refer to “Fluids And Lubricants” in
“Technical Specifications” for fluid specifications.
Special Additives
The manufacturer strongly recommends against using any
special additives in the transmission. Automatic Transmis-
sion Fluid (ATF) is an engineered product and its perfor-
mance may be impaired by supplemental additives. There-
fore, do not add any fluid additives to the transmission.
The only exception to this policy is the use of special dyes
for diagnosing fluid leaks. Avoid using transmission seal-
ers as they may adversely affect seals.
CAUTION!
Do not use chemical flushes in your transmission as
the chemicals can damage your transmission compo-
nents. Such damage is not covered by the New Vehicle
Limited Warranty.
Fluid Level Check
Check the fluid level when the engine is fully warmed up
and the transmission fluid is at normal operating tempera-
ture. Driving with an improper fluid level will greatly
reduce the life of the transmission and of the fluid. Check
the fluid level whenever the vehicle is serviced.
Fluid Level Check — Procedure
It is best to check the fluid level when the transmission is at
normal operating temperature (170-180°F / 77-82°C for 66RFE
transmission, or 158–176°F / 70–80°C for AS66RC transmis-
sion). This normally occurs after at least 15 miles (25 km) of
driving. At normal operating temperature the fluid cannot be
held comfortably between the fingertips. You can read the
transmission sump temperature in the instrument cluster dis-
play (refer toInstrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further information).
Use the following procedure to check the transmission
fluid level properly:
1. Monitor the transmission temperature using the instru- ment cluster display, and operate the vehicle as required
to reach the normal operating temperature. If the trans-
mission is not functioning properly, or the vehicle
cannot be driven, see the NOTE and CAUTION below
about checking the fluid level at colder temperatures.
388 SERVICING AND MAINTENANCE

Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission (6.4L Engine with 66RFE Trans-
mission) (For Diesel Engine See Diesel Supplement) Use only ATF+4 Automatic Transmission Fluid. Failure to
use ATF+4 fluid may affect the function or performance of
your transmission. We recommend Mopar ATF+4 fluid.
Automatic Transmission (6.4L Engine with AS66RC Trans-
mission) Use only Mopar ASRC Automatic Transmission Fluid or
equivalent. Failure to use the proper fluid may affect the
function or performance of your transmission.
Transfer Case We recommend you use Mopar BW44-44 Transfer Case
Fluid.
Front and Rear Axle Fluid (4500/5500) We recommend you use GL-5 SAE 75W-90 Synthetic (MS-
9763). Limited slip additive is not required for Limited-Slip
Rear Axles.
Brake Master Cylinder We recommend you use Mopar DOT 3 and SAE J1703. If
DOT 3 brake fluid is not available, then DOT 4 is accept-
able.
Power Steering Reservoir We recommend you use Mopar Power Steering Fluid +4,
Mopar ATF+4 Automatic Transmission Fluid.
9
TECHNICAL SPECIFICATIONS 435