RAM Chassis Cab (2021 year). Manual in english — page 23

362

SERVICING AND MAINTENANCE

Summer tires do not contain the all season

designation or mountain/snowflake symbol on the

tire sidewall. Use Summer tires only in sets of four;

failure to do so may adversely affect the safety and

handling of your vehicle.

Snow Tires

Some areas of the country require the use of snow

tires during the Winter. Snow tires can be identified

by a “mountain/snowflake” symbol on the tire

sidewall.

If you need snow tires, select tires

equivalent in size and type to the original

equipment tires. Use snow tires only in

sets of four; failure to do so may

adversely affect the safety and handling of your

vehicle.

Snow tires generally have lower speed ratings than

what was originally equipped with your vehicle and

should not be operated at sustained speeds over

75 mph (120 km/h). For speeds above 75 mph

(120 km/h) refer to original equipment or an

authorized tire dealer for recommended safe

operating speeds, loading and cold tire inflation

pressures.
While studded tires improve performance on ice,

skid and traction capability on wet or dry surfaces

may be poorer than that of non-studded tires.

Some states prohibit studded tires; therefore, local

laws should be checked before using these tire

types.

S

PARE

T

IRES

— I

F

E

QUIPPED

For restrictions when towing with a spare tire

designated for temporary emergency use

Ú

page 175.

Spare Tire Matching Original Equipped Tire

And Wheel — If Equipped

Your vehicle may be equipped with a spare tire and

wheel equivalent in look and function to the

original equipment tire and wheel found on the

front or rear axle of your vehicle. This spare tire

may be used in the tire rotation for your vehicle. If

your vehicle has this option, refer to an authorized

tire dealer for the recommended tire rotation

pattern.

Compact Spare Tire — If Equipped

The compact spare is for temporary emergency

use only. You can identify if your vehicle is

equipped with a compact spare by looking at the

spare tire description on the Tire and Loading

Information Placard located on the driver’s side

door opening or on the sidewall of the tire.

Compact spare tire descriptions begin with the

letter “T” or “S” preceding the size designation.

Example: T145/80D18 103M.
T, S = Temporary Spare Tire
Since this tire has limited tread life, the original

equipment tire should be repaired (or replaced)

and reinstalled on your vehicle at the first

opportunity.

WARNING!

Do not use Summer tires in snow/ice conditions.

You could lose vehicle control, resulting in

severe injury or death. Driving too fast for

conditions also creates the possibility of loss of

vehicle control.

CAUTION!

Because of the reduced ground clearance, do

not take your vehicle through an automatic car

wash with a compact or limited use temporary

spare installed. Damage to the vehicle may

result.

SERVICING AND MAINTENANCE

363

Do not install a wheel cover or attempt to mount a

conventional tire on the compact spare wheel,

since the wheel is designed specifically for the

compact spare tire. Do not install more than one

compact spare tire and wheel on the vehicle at any

given time.

Collapsible Spare Tire — If Equipped

The collapsible spare is for temporary emergency

use only. You can identify if your vehicle is

equipped with a collapsible spare by looking at the

spare tire description on the Tire and Loading

Information Placard located on the driver’s side

door opening or on the sidewall of the tire.
Collapsible spare tire description example:

165/80-17 101P.

Since this tire has limited tread life, the original

equipment tire should be repaired (or replaced)

and reinstalled on your vehicle at the first

opportunity.
Inflate collapsible tire only after the wheel is

properly installed to the vehicle. Inflate the

collapsible tire using the electric air pump before

lowering the vehicle.
Do not install a wheel cover or attempt to mount a

conventional tire on the collapsible spare wheel,

since the wheel is designed specifically for the

collapsible spare tire.

Full Size Spare — If Equipped

The full size spare is for temporary emergency use

only. This tire may look like the originally equipped

tire on the front or rear axle of your vehicle, but it is

not. This spare tire may have limited tread life.

When the tread is worn to the tread wear

indicators, the temporary use full size spare tire

needs to be replaced. Since it is not the same as

your original equipment tire, replace (or repair) the

original equipment tire and reinstall on the vehicle

at the first opportunity.

Limited Use Spare — If Equipped

The limited use spare tire is for temporary

emergency use only. This tire is identified by a label

located on the limited use spare wheel. This label

contains the driving limitations for this spare. This

tire may look like the original equipped tire on the

front or rear axle of your vehicle, but it is not.

Installation of this limited use spare tire affects

vehicle handling. Since it is not the same as your

original equipment tire, replace (or repair) the

original equipment tire and reinstall on the vehicle

at the first opportunity.

WARNING!

Compact and collapsible spares are for

temporary emergency use only. With these

spares, do not drive more than 50 mph (80 km/

h). Temporary use spares have limited tread life.

When the tread is worn to the tread wear

indicators, the temporary use spare tire needs to

be replaced. Be sure to follow the warnings,

which apply to your spare. Failure to do so could

result in spare tire failure and loss of vehicle

control.

WARNING!

Compact and Collapsible spares are for tempo

-

rary emergency use only. With these spares, do

not drive more than 50 mph (80 km/h). Tempo

-

rary use spares have limited tread life. When the

tread is worn to the tread wear indicators, the

temporary use spare tire needs to be replaced.

Be sure to follow the warnings, which apply to

your spare. Failure to do so could result in spare

tire failure and loss of vehicle control.

8

364

SERVICING AND MAINTENANCE

W

HEEL

A

ND

W

HEEL

T

RIM

C

ARE

All wheels and wheel trim, especially aluminum

and chrome plated wheels, should be cleaned

regularly using mild (neutral Ph) soap and water to

maintain their luster and to prevent corrosion.

Wash wheels with the same soap solution

recommended for the body of the vehicle and

remember to always wash when the surfaces are

not hot to the touch.
Your wheels are susceptible to deterioration

caused by salt, sodium chloride, magnesium

chloride, calcium chloride, etc., and other road

chemicals used to melt ice or control dust on dirt

roads. Use a soft cloth or sponge and mild soap to

wipe away promptly. Do not use harsh chemicals or

a stiff brush. They can damage the wheel’s

protective coating that helps keep them from

corroding and tarnishing.

When cleaning extremely dirty wheels including

excessive brake dust, care must be taken in the

selection of tire and wheel cleaning chemicals and

equipment to prevent damage to the wheels.

Mopar® Wheel Treatment or Mopar® Chrome

Cleaner or their equivalent is recommended or

select a non-abrasive, non-acidic cleaner for

aluminum or chrome wheels.

NOTE:

If you intend parking or storing your vehicle for an

extended period after cleaning the wheels with

wheel cleaner, drive your vehicle and apply the

brakes to remove the water droplets from the

brake components. This activity will remove the

red rust on the brake rotors and prevent vehicle

vibration when braking.
Dark Vapor Chrome, Black Satin Chrome, or Low

Gloss Clear Coat Wheels

WARNING!

Limited use spares are for emergency use only.

Installation of this limited use spare tire affects

vehicle handling. With this tire, do not drive

more than the speed listed on the limited use

spare wheel. Keep inflated to the cold tire

inflation pressures listed on your Tire and

Loading Information Placard located on the

driver’s side B-pillar or the rear edge of the

driver’s side door. Replace (or repair) the original

equipment tire at the first opportunity and

reinstall it on your vehicle. Failure to do so could

result in loss of vehicle control.

CAUTION!

Avoid products or automatic car washes that use

acidic solutions or strong alkaline additives or

harsh brushes. Many aftermarket wheel

cleaners and automatic car washes may

damage the wheel's protective finish. Such

damage is not covered by the New Vehicle

Limited Warranty. Only car wash soap, Mopar®

Wheel Cleaner or equivalent is recommended.

CAUTION!

Do not use scouring pads, steel wool, a bristle

brush, metal polishes or oven cleaner. These

products may damage the wheel's protective

finish. Such damage is not covered by the New

Vehicle Limited Warranty. Only car wash soap,

Mopar® Wheel Cleaner or equivalent is

recommended.

CAUTION!

If your vehicle is equipped with these specialty

wheels, DO NOT USE wheel cleaners, abrasives,

or polishing compounds. They will permanently

damage this finish and such damage is not cov

-

ered by the New Vehicle Limited Warranty. HAND

WASH ONLY USING MILD SOAP AND WATER

WITH A SOFT CLOTH. Used on a regular basis;

this is all that is required to maintain this finish.

SERVICING AND MAINTENANCE

365

S

NOW

T

RACTION

D

EVICES

Use of traction devices require sufficient tire-to-body clearance. Due to limited clearance, the following snow traction devices are recommended. Follow these

recommendations to guard against damage:



Snow traction device must be of proper size for the tire, as recommended by the snow traction device manufacturer.



No other tire sizes are recommended for use with the snow traction device.



Please follow the table below for the recommended tire size, axle and snow traction device:

3500 SRW CAB CHASSIS

Trim Level

Axle

Tire/Wheel Size

Snow Traction Device (maximum

projection beyond tire profile or

equivalent)

4x2
4x4

Rear

LT275/70R18E

U Class

3500 DRW CAB CHASSIS

Trim Level

Axle

Tire/Wheel Size

Snow Traction Device (maximum

projection beyond tire profile or

equivalent)

4x2

Rear

LT235/80R17E

U Class

4x4

Front/Rear

4500/5500 DRW CAB CHASSIS

Trim Level

Axle

Tire/Wheel Size

Snow Traction Device (maximum

projection beyond tire profile or

equivalent)

4x2

Rear

225/70R19.5G

U Class

4x4

8

366

SERVICING AND MAINTENANCE

(Continued)

T

IRE

R

OTATION

R

ECOMMENDATIONS

Tires on the front and rear axles of vehicles

operate at different loads and perform different

steering, driving, and braking functions. For these

reasons, they wear at unequal rates.
These effects can be reduced by timely rotation of

tires. The benefits of rotation are especially

worthwhile with aggressive tread designs such as

those on On/Off Road type tires. Rotation will

increase tread life, help to maintain mud, snow,

and wet traction levels, and contribute to a

smooth, quiet ride.

For the proper maintenance intervals

Ú

page 303.

More frequent rotation is permissible if desired.

The reasons for any rapid or unusual wear should

be corrected prior to rotation being performed.

Tire Rotation (Rearward Cross)

NOTE:

On Canadian vehicles only, if your vehicle is

equipped with All-Season type tires on the front

and On/Off Road type tires mounted on the rear,

do not use a front to back rotation pattern. Instead,

rotate your tires side to side at the recommended

intervals.

WARNING!

Using tires of different size and type (M+S,

Snow) between front and rear axles can cause

unpredictable handling. You could lose control

and have a collision.

CAUTION!

To avoid damage to your vehicle or tires, observe

the following precautions:



Because of restricted traction device clear

-

ance between tires and other suspension

components, it is important that only traction

devices in good condition are used. Broken

devices can cause serious damage. Stop the

vehicle immediately if noise occurs that could

indicate device breakage. Remove the

damaged parts of the device before further

use.



Install device as tightly as possible and then

retighten after driving about 0.5 mile

(0.8 km). Autosock devices do not require

retightening.



Do not exceed 30 mph (48 km/h).



Drive cautiously and avoid severe turns and

large bumps, especially with a loaded vehicle.



Do not drive for a prolonged period on dry

pavement.



Observe the traction device manufacturer’s

instructions on the method of installation,

operating speed, and conditions for use.

Always use the suggested operating speed of

the device manufacturer’s if it is less than

30 mph (48 km/h).



Do not use traction devices on a compact

spare tire.

CAUTION!

SERVICING AND MAINTENANCE

367

Dual Rear Wheels

Tire Rotation

The tires used on dual wheel assemblies should be

matched for wear to prevent overloading one tire in

a set. To check if tires are even, lay a straight edge

across all four tires. The straight edge should touch

all the tires.
NOTE:

If your vehicle is equipped with a Tire Pressure

Information System (TPIS):



The Tire Pressure Information System (TPIS)

uses unique sensors in the inner rear wheels to

help identify them from the outer rear wheels,

because of this, the inner and outer wheel loca

-

tions can’t be switched.



After a tire rotation is completed, as shown

below, the system can auto learn the locations

of each sensor ID. Auto learning/localization

occurs when the vehicle ignition status is

changed from Off to On and speeds of greater

than 5 mph (8 km/h) are obtained and remain

over 5 mph (8 km/h) for at about a 15 minute

period. You may need to drive for 20 minutes to

account slower speeds and stops.



If the tires are rotated incorrectly, the Auto local

-

ization of the TPIS sensors will fail to locate

correctly resulting in incorrect locations for the

pressure values displayed in the Instrument

Cluster.

DEPARTMENT OF TRANSPORTATION

UNIFORM TIRE QUALITY GRADES

The following tire grading categories

were established by the National

Highway Traffic Safety Administration.

The specific grade rating assigned by the

tire's manufacturer in each category is

shown on the sidewall of the tires on

your vehicle.
All passenger vehicle tires must conform

to Federal safety requirements in

addition to these grades.

T

READWEAR

The Treadwear grade is a comparative

rating, based on the wear rate of the tire

when tested under controlled conditions

on a specified government test course.

For example, a tire graded 150 would

wear one and one-half times as well on

the government course as a tire graded

100. The relative performance of tires

depends upon the actual conditions of

their use, however, and may depart

significantly from the norm due to

CAUTION!



4500/5500 Dual Rear Tires may only have

one approved direction of rotation. This is to

accommodate the asymmetrical design (tread

pattern) of the On/Off road tire.



When replacing a flat, the spare tire may have

to be remounted on the rim or installed at a

different location to maintain the correct

placement of the tire on the wheel relative to

the tire/wheel position on the vehicle. For

example, if the spare is used to replace an

outer rear tire it will have to be remounted on

the rim so that the wheel is dished inward.

That way the tread design of asymmetrical

tires will maintain proper position.

8

368

SERVICING AND MAINTENANCE

variations in driving habits, service

practices, and differences in road

characteristics and climate.

T

RACTION

G

RADES

The Traction grades, from highest to

lowest, are AA, A, B, and C. These grades

represent the tire's ability to stop on wet

pavement, as measured under

controlled conditions on specified

government test surfaces of asphalt and

concrete. A tire marked C may have poor

traction performance.

T

EMPERATURE

G

RADES

The Temperature grades are A (the

highest), B, and C, representing the tire's

resistance to the generation of heat and

its ability to dissipate heat, when tested

under controlled conditions on a

specified indoor laboratory test wheel.

Sustained high temperature can cause

the material of the tire to degenerate

and reduce tire life, and excessive

temperature can lead to sudden tire

failure. The grade C corresponds to a

level of performance, which all

passenger vehicle tires must meet

under the Federal Motor Vehicle Safety

Standard No. 109. Grades B and A

represent higher levels of performance

on the laboratory test wheel, than the

minimum required by law.

STORING THE VEHICLE

If you are storing your vehicle for more than three

weeks, we recommend that you take the following

steps to minimize the drain on your vehicle's

battery:



Disconnect the negative cable from battery.



Any time you store your vehicle or keep it out of

service (i.e., vacation) for two weeks or more,

run the air conditioning system at idle for about

five minutes in the fresh air and high blower

setting. This will ensure adequate system lubri

-

cation to minimize the possibility of compressor

damage when the system is started again.

BODYWORK

P

ROTECTION

F

ROM

A

TMOSPHERIC

A

GENTS

Vehicle body care requirements vary according to

geographic locations and usage. Chemicals that

make roads passable in snow and ice and those

that are sprayed on trees and road surfaces during

other seasons are highly corrosive to the metal in

your vehicle. Outside parking, which exposes your

vehicle to airborne contaminants, road surfaces on

which the vehicle is operated, extreme hot or cold

weather and other extreme conditions will have an

adverse effect on paint, metal trim, and underbody

protection.
The following maintenance recommendations will

enable you to obtain maximum benefit from the

corrosion resistance built into your vehicle.

WARNING!

The traction grade assigned to this tire is based

on straight-ahead braking traction tests, and

does not include acceleration, cornering,

hydroplaning, or peak traction characteristics.

WARNING!

The temperature grade for this tire is estab

-

lished for a tire that is properly inflated and not

overloaded. Excessive speed, under-inflation, or

excessive loading, either separately or in combi

-

nation, can cause heat buildup and possible tire

failure.

SERVICING AND MAINTENANCE

369

What Causes Corrosion?

Corrosion is the result of deterioration or removal

of paint and protective coatings from your vehicle.
The most common causes are:



Road salt, dirt and moisture accumulation.



Stone and gravel impact.



Insects, tree sap and tar.



Salt in the air near seacoast localities.



Atmospheric fallout/industrial pollutants.

B

ODY

A

ND

U

NDERBODY

M

AINTENANCE

Cleaning Headlights

Your vehicle is equipped with plastic headlights

and fog lights that are lighter and less susceptible

to stone breakage than glass headlights.
Plastic is not as scratch resistant as glass and

therefore different lens cleaning procedures must

be followed.
To minimize the possibility of scratching the lenses

and reducing light output, avoid wiping with a dry

cloth. To remove road dirt, wash with a mild soap

solution followed by rinsing.
Do not use abrasive cleaning components,

solvents, steel wool or other aggressive material to

clean the lenses.

P

RESERVING

T

HE

B

ODYWORK

Washing



Wash your vehicle regularly. Always wash your

vehicle in the shade using Mopar® Car Wash, or

a mild car wash soap, and rinse the panels

completely with water.



If insects, tar, or other similar deposits have

accumulated on your vehicle, use Mopar®

Super Kleen Bug and Tar Remover to remove.



Use a high quality cleaner wax, such as Mopar®

Cleaner Wax to remove road film, stains and to

protect your paint finish. Use precautions to not

scratch the paint.



Avoid using abrasive compounds and power

buffing that may diminish the gloss or thin out

the paint finish.

Special Care



If you drive on salted or dusty roads or if you

drive near the ocean, hose off the undercarriage

at least once a month.



It is important that the drain holes in the lower

edges of the doors, rocker panels, and trunk be

kept clear and open.



If you detect any stone chips or scratches in the

paint, touch them up immediately.



If your vehicle is damaged due to a collision or

similar cause that destroys the paint and protec

-

tive coating, have your vehicle repaired as soon

as possible.



If you carry special cargo such as chemicals,

fertilizers, de-icer salt, etc., be sure that such

materials are well packaged and sealed.



If a lot of driving is done on gravel roads,

consider mud or stone shields behind each

wheel.



Use Mopar® Touch Up Paint on scratches as

soon as possible. An authorized dealer has

touch up paint to match the color of your

vehicle.

CAUTION!



Do not use abrasive or strong cleaning mate

-

rials such as steel wool or scouring powder

that will scratch metal and painted surfaces.



Use of power washers exceeding 1,200 psi

(8,274 kPa) can result in damage or removal

of paint and decals.

8

370

SERVICING AND MAINTENANCE

INTERIORS

S

EATS

A

ND

F

ABRIC

P

ARTS

Use Mopar® Total Clean to clean fabric upholstery

and carpeting.

Stain Repel Fabric Cleaning Procedure —

If Equipped

Stain Repel seats may be cleaned in the following

manner:



Remove as much of the stain as possible by

blotting with a clean, dry towel.



Blot any remaining stain with a clean, damp

towel.



For tough stains, apply Mopar® Total Clean, or

a mild soap solution to a clean, damp cloth and

remove stain. Use a fresh, damp towel to

remove soap residue.



For grease stains, apply Mopar® Multi-Purpose

Cleaner to a clean, damp cloth and remove

stain. Use a fresh, damp towel to remove soap

residue.



Do not use any harsh solvents or any other form

of protectants on Stain Repel products.

Seat Belt Maintenance

Do not bleach, dye or clean the belts with chemical

solvents or abrasive cleaners. This will weaken the

fabric.
If the belts need cleaning, use a mild soap solution

or lukewarm water. Do not remove the belts from

the vehicle to wash them. Dry with a soft cloth.
Sun damage can also weaken the fabric. Replace

the belts if they appear frayed or worn or if the

buckles do not work properly.
NOTE:

If the belts retract slowly, inspect the upper turning

loop for soiling. If soiling is present, clean with a

wet soft cloth until all residue is removed.

P

LASTIC

A

ND

C

OATED

P

ARTS

Use Mopar® Total Clean to clean vinyl upholstery.

WARNING!

Do not use volatile solvents for cleaning

purposes. Many are potentially flammable, and

if used in closed areas they may cause

respiratory harm.

WARNING!

A frayed or torn seat belt could rip apart in a col

-

lision and leave you with no protection. Inspect

the seat belt system periodically, checking for

cuts, frays, or loose parts. Damaged parts must

be replaced immediately. Do not disassemble or

modify the seat belt system. If your vehicle is

involved in a collision, or if you have questions

regarding seat belt or retractor conditions, take

your vehicle to an authorized FCA dealer or

authorized FCA Certified Collision Care Program

facility for inspection.

CAUTION!



Direct contact of air fresheners, insect repel

-

lents, suntan lotions, or hand sanitizers to the

plastic, painted, or decorated surfaces of the

interior may cause permanent damage. Wipe

away immediately.



Damage caused by these type of products

may not be covered by your New Vehicle

Limited Warranty.

SERVICING AND MAINTENANCE

371

Cleaning Plastic Instrument Cluster

Lenses

The lenses in front of the instruments in this

vehicle are molded in clear plastic. When cleaning

the lenses, care must be taken to avoid scratching

the plastic.
Clean with a wet soft cloth. A mild soap solution

may be used, but do not use high alcohol content

or abrasive cleaners. If soap is used, wipe clean

with a clean damp cloth. Dry with a soft cloth.

L

EATHER

S

URFACES

Mopar® Total Clean is specifically recommended

for leather upholstery.
Your leather upholstery can be best preserved by

regular cleaning with a damp soft cloth. Small

particles of dirt can act as an abrasive and damage

the leather upholstery and should be removed

promptly with a damp cloth. Stubborn soils can be

removed easily with a soft cloth and Mopar® Total

Clean. Care should be taken to avoid soaking your

leather upholstery with any liquid. Please do not

use polishes, oils, cleaning fluids, solvents,

detergents, or ammonia-based cleaners to clean

your leather upholstery.

NOTE:

If equipped with light colored leather, it tends to

show any foreign material, dirt, and fabric dye

transfer more so than darker colors. The leather is

designed for easy cleaning, and the manufacturer

recommends Mopar® total care leather cleaner

applied on a cloth to clean the leather seats as

needed.

G

LASS

S

URFACES

All glass surfaces should be cleaned on a regular

basis with Mopar® Glass Cleaner, or any

commercial household-type glass cleaner. Never

use an abrasive type cleaner. Use caution when

cleaning the inside rear window equipped with

electric defrosters or windows equipped with radio

antennas. Do not use scrapers or other sharp

instruments that may scratch the elements.
When cleaning the rear view mirror, spray cleaner

on the towel or cloth that you are using. Do not

spray cleaner directly on the mirror.

CAUTION!

Do not use Alcohol and Alcohol-based and/or

Ketone based cleaning products to clean leather

upholstery, as damage to the upholstery may

result.

8

372

TECHNICAL SPECIFICATIONS

VEHICLE IDENTIFICATION NUMBER (VIN)

The VIN is found on the left front corner of the

instrument panel, visible through the windshield.

Vehicle Identification Number

NOTE:

It is illegal to remove or alter the VIN.

BRAKE SYSTEM

If power assist is lost for any reason (for example,

repeated brake applications with the engine off),

the brakes will still function. However, you will

experience a substantial increase in braking effort

to stop the vehicle.

If either the front or rear hydraulic system loses

normal braking capability, the remaining system

will still function with some loss of overall braking

effectiveness. This will be evident by increased

pedal travel during application, greater pedal force

required to slow or stop, and activation of the

“Brake Warning Light” and/or the “ABS Warning

Light” during brake use.

H

YDRAULIC

B

RAKE

A

SSIST

—

I

F

E

QUIPPED

The brake system power assist is provided by a

hydro-boost unit which shares fluid with the power

steering system. You may experience some

clicking or hissing noises from the hydro-boost

system during hard braking conditions.
NOTE:

Under cold temperatures, pedal effort will be

higher than normal until the power steering fluid

reaches operating temperature.

WHEEL AND TIRE TORQUE SPECIFICATIONS

Proper lug nut/bolt torque is very important to

ensure that the wheel is properly mounted to the

vehicle. Any time a wheel has been removed and

reinstalled on the vehicle, the lug nuts/bolts

should be torqued using a properly calibrated

torque wrench using a six sided (hex) deep wall

socket.

T

ORQUE

S

PECIFICATIONS

**Use only authorized dealer recommended lug nuts/

bolts and clean or remove any dirt or oil before tightening.

Inspect the wheel mounting surface prior to

mounting the tire and remove any corrosion or

loose particles.
NOTE:

Dual wheels are flat mounted, center piloted. The

lug nuts are a two-piece assembly. When the tires

are being rotated or replaced, clean these lug nuts

at the interface between the lug nut/bolt and the

washer. Do not oil wheel studs.

Lug Nut/

Bolt

Torque

Lug Nut/

Bolt Type

**Lug

Nut/Bolt

Size

Lug Nut/

Bolt

Socket

Size

130 Ft-Lb

(176 N·m)

Cone

M14 x

1.50

22 mm

129 Ft-Lb

(175 N·m)

Flanged

TECHNICAL SPECIFICATIONS

373

Two-Piece Lug Nut

Inspect the wheel mounting surface prior to

mounting the tire and remove any corrosion or

loose particles.

Wheel Mounting Surface

Retighten the wheel nuts in the same sequence to

the torques listed in the table. Go through the

sequence a second time to verify that specific

torque has been achieved. Retighten to

specifications after 25 miles (40 km) and check

the lug nut/bolt torque to be sure that all the lug

nuts/bolts are properly tightened.

8/10 Lug Nuts/Bolts Torque Patterns

It is recommended that wheel stud nuts be kept

torqued to specifications at all times. Torque wheel

stud nuts to specifications at each lubrication

interval.
All wheel nuts should be tightened occasionally to

eliminate the possibility of wheel studs being

sheared or the bolt holes in the wheels becoming

elongated. This is especially important during the

first few hundred miles/kilometers of operation to

allow the wheel nuts to become properly set. All

wheel nuts should first be firmly seated against the

wheel. The wheel nuts should then be tightened to

recommended torque. Tighten the wheel nuts to

final torque in increments. Progress around the

bolt circle, tightening the wheel nut opposite to the

wheel nut just previously tightened until final

torque is achieved.

FUEL REQUIREMENTS — GASOLINE ENGINE

While operating on gasoline with the required

octane number, hearing a light knocking sound

from the engine is not a cause for concern.

However, if the engine is heard making a heavy

knocking sound, see a dealer immediately. Use of

gasoline with a lower than recommended octane

number can cause engine failure and may void or

not be covered by the New Vehicle Limited

Warranty.
Poor quality gasoline can cause problems such as

hard starting, stalling, and hesitations. If you

experience these symptoms, try another brand of

gasoline before considering service for the vehicle.

1 — 10 Bolt Pattern
2 — 8 Bolt Pattern

WARNING!

To avoid the risk of forcing the vehicle off the

jack, do not tighten the lug nuts/bolts fully until

the vehicle has been lowered. Failure to follow

this warning may result in personal injury.

9

374

TECHNICAL SPECIFICATIONS

6.4L E

NGINE

Do not use E-85 flex fuel or ethanol blends greater

than 15% in this engine.

This engine is designed to meet all

emission regulations and provide

satisfactory fuel economy and

performance when using high quality

unleaded gasoline having a posted octane number

of 87 as specified by the (R+M)/2 method.

R

EFORMULATED

G

ASOLINE

Many areas of the country require the use of

cleaner burning gasoline referred to as

“reformulated gasoline”. Reformulated gasoline

contains oxygenates and are specifically blended

to reduce vehicle emissions and improve air

quality.
The use of reformulated gasoline is recommended.

Properly blended reformulated gasoline will

provide improved performance and durability of

engine and fuel system components.

M

ATERIALS

A

DDED

T

O

F

UEL

Besides using unleaded gasoline with the proper

octane rating, gasolines that contain detergents,

corrosion and stability additives are

recommended. Using gasolines that have these

additives will help improve fuel economy, reduce

emissions, and maintain vehicle performance.

Designated TOP TIER Detergent Gasoline

contains a higher level of detergents to

further aide in minimizing engine and

fuel system deposits. When available,

the usage of TOP TIER Detergent Gasoline is

recommended. Visit www.toptiergas.com for a list

of TOP TIER Detergent Gasoline Retailers.
Indiscriminate use of fuel system cleaning agents

should be avoided. Many of these materials

intended for gum and varnish removal may contain

active solvents or similar ingredients. These can

harm fuel system gasket and diaphragm materials.

G

ASOLINE

/O

XYGENATE

B

LENDS

Some fuel suppliers blend unleaded gasoline with

oxygenates such as ethanol.

Problems that result from using gasoline

containing more than 15% ethanol (E-15) or

gasoline containing methanol are not the

responsibility of the manufacturer and may void or

not be covered under New Vehicle Limited

Warranty.

D

O

N

OT

U

SE

E-85 I

N

N

ON

-F

LEX

F

UEL

V

EHICLES

Non-Flex Fuel Vehicles (FFV) are compatible with

gasoline containing up to 15% ethanol (E-15). Use

of gasoline with higher ethanol content may void

the New Vehicle Limited Warranty.
If a Non-FFV vehicle is inadvertently fueled with

E-85 fuel, the engine will have some or all of these

symptoms:



Operate in a lean mode.



OBD II Malfunction Indicator Light on.



Poor engine performance.



Poor cold start and cold drivability.



Increased risk for fuel system component corro

-

sion.

CAUTION!

DO NOT use E-85, gasoline containing methanol,

or gasoline containing more than 15% ethanol

(E-15). Use of these blends may result in starting

and drivability problems, damage critical fuel

system components, cause emissions to exceed

the applicable standard, and/or cause the

Malfunction Indicator Light to illuminate. Please

observe pump labels as they should clearly

communicate if a fuel contains greater than

15% ethanol (E-15).

TECHNICAL SPECIFICATIONS

375

CNG A

ND

LP F

UEL

S

YSTEM

M

ODIFICATIONS

Modifications that allow the engine to run on

Compressed Natural Gas (CNG) or Liquid Propane

(LP) may result in damage to the engine,

emissions, and fuel system components. Problems

that result from running CNG or LP are not the

responsibility of the manufacturer and may void or

not be covered under the New Vehicle Limited

Warranty.

M

ETHYLCYCLOPENTADIENYL

M

ANGANESE

T

RICARBONYL

(MMT) I

N

G

ASOLINE

MMT is a manganese-containing metallic additive

that is blended into some gasoline to increase

octane. Gasoline blended with MMT provides no

performance advantage beyond gasoline of the

same octane number without MMT. Gasoline

blended with MMT reduces spark plug life and

reduces emissions system performance in some

vehicles. The manufacturer recommends that

gasoline without MMT be used in your vehicle. The

MMT content of gasoline may not be indicated on

the gasoline pump; therefore, you should ask your

gasoline retailer whether the gasoline contains

MMT. MMT is prohibited in Federal and California

reformulated gasoline.

F

UEL

S

YSTEM

C

AUTIONS

NOTE:

Intentional tampering with the emissions control

system can result in civil penalties being assessed

against you.

FUEL REQUIREMENTS – DIESEL ENGINE

Use good quality diesel fuel from a reputable

supplier in your vehicle. Federal law requires that

you must fuel this vehicle with Ultra Low Sulfur

Highway Diesel fuel (15 ppm Sulfur maximum) and

prohibits the use of Low Sulfur Highway Diesel fuel

(500 ppm Sulfur maximum) to avoid damage to the

emissions control system.
For most year-round service, Number 2 diesel fuel

meeting ASTM (formerly known as the American

Society for Testing and Materials) specification

D-975 Grade S15 will provide good performance. If

the vehicle is exposed to extreme cold (below 20°F

or -7°C), or is required to operate at colder-than-

normal conditions for prolonged periods, use

climatized Number 2 diesel fuel or dilute the

Number 2 diesel fuel with 50% Number 1 diesel

fuel. This will provide better protection from fuel

gelling or wax-plugging of the fuel filters.

CAUTION!

Follow these guidelines to maintain your

vehicle’s performance:



The use of leaded gasoline is prohibited by

Federal law. Using leaded gasoline can impair

engine performance and damage the emis

-

sions control system.



An out-of-tune engine or certain fuel or ignition

malfunctions can cause the catalytic

converter to overheat. If you notice a pungent

burning odor or some light smoke, your engine

may be out of tune or malfunctioning and may

require immediate service. Contact an autho

-

rized dealer for service assistance.



The use of fuel additives, which are now being

sold as octane enhancers, is not recom

-

mended. Most of these products contain high

concentrations of methanol. Fuel system

damage or vehicle performance problems

resulting from the use of such fuels or addi

-

tives is not the responsibility of the manufac

-

turer and may void or not be covered under

the New Vehicle Limited Warranty.

9

376

TECHNICAL SPECIFICATIONS

Diesel fuel is seldom completely free of water. To

prevent fuel system trouble, drain the

accumulated water from the fuel/water separator

using the fuel/water separator drain provided on

both fuel filters. If you buy good quality fuel and

follow the cold weather advice above, fuel

conditioners should not be required in your vehicle.

If available in your area, a high cetane “premium”

diesel fuel may offer improved cold-starting and

warm-up performance.

F

UEL

S

PECIFICATIONS

The Cummins® Turbo Diesel engine has been

developed to take advantage of the high energy

content and generally lower cost Number 2 Ultra

Low Sulfur diesel fuel or Number 2 Ultra Low Sulfur

climatized diesel fuels. Experience has shown that

it also operates on Number 1 Ultra Low Sulfur

diesel fuels or other fuels within specification.
NOTE:



If you accidentally fill the fuel tank with gasoline

on your diesel vehicle, Do not start the vehicle.

If you restart your vehicle you risk damaging the

engine and fuel system. Please call an autho

-

rized dealer for service.



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).



In addition, commercially available fuel addi

-

tives are not necessary for the proper operation

of your Cummins® diesel engine. However, if

seasonably adjusted fuel is not available and

you are operating below 20°F (-6°C), Mopar®

Premium Diesel Fuel Treatment (or equivalent)

may be beneficial to avoid fuel gelling.



Number 1 Ultra Low Sulfur diesel fuel should

only be used where extended arctic conditions

(0°F or -18°C) exist.

B

IODIESEL

F

UEL

R

EQUIREMENTS

Chassis Cab Models

A maximum blend of 5% biodiesel meeting ASTM

specification D975 may be used with your

Cummins® diesel engine. If operation with

biodiesel blends greater than 5% but not greater

than 20% (B6-B20) is desired, the truck must first

be reconfigured by an authorized Ram dealer and

the provisions in the following section must be

adhered to.

Pickup Models And Chassis Cab Models

Ordered With B20 Option

Your vehicle has been validated and approved for

the use of biodiesel in blends up to 20% (B20)

provided that you comply with the requirements

outlined below. It is important that you understand

and comply with these requirements. Failure to

comply with Oil Change requirements for vehicles

operating on biodiesel blends up to B20 will result

in premature engine wear. Such wear is not

covered by the New Vehicle Limited Warranty.
Biodiesel is a fuel produced from renewable

resources typically derived from animal fat,

rapeseed oil (Rapeseed Methyl Ester (RME) base),

or soybean oil (Soy Methyl Ester (SME or SOME)

base). Biodiesel fuel has inherent limitations which

require that you understand and adhere to the

following requirements if you use blends of

biodiesel greater then 5% but not greater than

20% (B6-B20). There are no unique restrictions for

the use of B5. Use of blends greater than 20% is

not approved. Use of blends greater than 20% can

result in engine damage. Such damage is not

covered by the New Vehicle Limited Warranty.

WARNING!

Do not use alcohol or gasoline as a fuel blending

agent. They can be unstable under certain

conditions and hazardous or explosive when

mixed with diesel fuel.

CAUTION!

If the “Water in Fuel Indicator Light” remains on,

DO NOT START engine before you drain the water

from the fuel filter(s) to avoid engine damage

Ú

page 322.

TECHNICAL SPECIFICATIONS

377

Fuel Quality — Must Comply With ASTM

Standards

The quality of biodiesel fuel may vary widely. Only

fuel produced by a BQ9000 supplier to the

following specifications may be blended to meet

biodiesel blend (B6–B20) fuel meeting ASTM

specification D-7467:



Petrodiesel fuel meeting ASTM specification

D-975 and biodiesel fuel (B100) meeting ASTM

specification D-6751.

Fuel Oxidation Stability — Must Use Fuel

Within Six Months Of Manufacture

Biodiesel fuel has poor oxidation stability which

can result in long term storage problems. Fuel

produced to approved ASTM standards, if stored

properly, provides for protection against fuel

oxidation for up to six months.

Fuel Water Separation — Must Use

Mopar®/Cummins® Approved Fuel Filter

Elements

You must use Mopar®/Cummins® approved fuel

filter elements in both your engine mounted filter

and frame mounted filter.
Biodiesel fuel has a natural affinity to water and

water accelerates microbial growth. Your Mopar®/

Cummins® filtration system is designed to provide

adequate fuel water separation capabilities.

Bio-Diesel Fuel Properties — Low Ambient

Temperatures

Biodiesel fuel may gel or solidify at low ambient

temperatures, which may pose problems for both

storage and operation. Precautions can be

necessary at low ambient temperatures, such as

storing the fuel in a heated building or a heated

storage tank, or using cold temperature additives.

Fuel In Oil Dilution — Must Adhere To

Required Oil Change Interval

Fuel dilution of lubricating oil has been observed

with the use of biodiesel fuel. Fuel in oil must not

exceed 5%. To ensure this limit is met your oil

change interval must be maintained to the

following schedule:



Ram 3500/4500/5500 Chassis Cab — 12,500

Miles (20,000 km)*

(*unless otherwise notified with a oil service

message)

CAUTION!



Under no circumstances should oil change

intervals exceed 12,500 miles (20,000 km) if

operation occurs with greater than 5%

biodiesel blends. Oil change intervals should

not exceed six months in either case. Failure

to comply with these Oil Change requirements

for vehicles operating on biodiesel blends up

to B20 may result in premature engine wear.

Such wear is not covered by the New Vehicle

Limited Warranty.



B20 Biodiesel capable: The engine may suffer

severe damage if operated with concentra

-

tions of Biodiesel higher than 20%.

9