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WHEEL DESIGN
The rim size is on the vehicle safety certification label
located on the drivers door shut face. The size of the
rim is determined by the drivetrain package. Original
equipment wheels/rims are designed for operation up
to the specified maximum vehicle capacity.
All models use stamped steel, cast aluminum or
forged aluminum wheels. Every wheel has raised sec-
tions between the rim flanges (1) and rim drop well (3)
called safety humps.
Initial inflation of the tire forces the bead over these
raised sections. In case of rapid loss of air pressure,
the raised sections help hold the tire on the wheel.
The wheel studs and nuts are designed for specific
applications. All aluminum and some steel wheels
have wheel stud nuts with an enlarged nose. This
enlarged nose is necessary to ensure proper retention
of the wheels. Do not use replacement studs or nuts with a different design orlesserquality.
DIAGNOSIS AND TESTING
WHEEL INSPECTION
Inspect wheels for:
Excessive run out
Dents or cracks
Damaged wheel lug nut holes
Air Leaks from any area or surface of the rim
NOTE: Do not attempt to repair a wheel by hammering, heating or welding.
If a wheel is damaged an original equipment replacement wheel should be used. When obtaining replacement
wheels, they should be equivalent in load carrying capacity. The diameter, width, offset, pilot hole and bolt circle of
the wheel should be the same as the original wheel.
WARNING: Failure to use equivalent replacement wheels may adversely affect the safety and handling of
the vehicle. Used wheels are not recommended. The service history of the wheel may have included severe
treatment or very high mileage. The rim could fail without warning.
STANDARD PROCEDURE
WHEEL REPLACEMENT
The wheel studs and nuts are designed for specific applications. They mustbe replaced with equivalent parts. Do
not use replacement parts of lesser quality or a substitute design. All aluminum and some steel wheels have wheel
stud nuts which feature an enlarged nose. This enlarged nose is necessary to ensure proper retention of the alu-
minum wheels.
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NOTE: Do not use chrome plated lug nuts with
chrome plated wheels.
NOTE: All wheel nuts should then be tightened
just snug. Gradually tighten them in sequence to
the proper torque specification.
NOTE: Never use oil or grease on studs or nuts.
Before installing the wheel, be sure to remove any
build up of corrosion on the wheel mounting surfaces.
Ensure wheels are installed with good metal-to-metal
contact. Improper installation could cause loosening of
wheel nuts. This could affect the safety and handling
of your vehicle.
To install the wheel (3), first position it properly on the mounting surface.
8–lug.
(SRT10).
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6– bolt pattern.
Wheels must be replaced if they have:
Excessive runout
Bent or dented
Leak air through welds
Have damaged bolt holes
Wheel repairs employing hammering, heating, or welding are not allowed.
Original equipment wheels are available through your dealer. Replacement wheels from any other source should be
equivalent in:
Load carrying capacity
Diameter
Width
Offset
Mounting configuration
Failure to use equivalent replacement wheels may affect the safety and handling of your vehicle. Replacement with
usedwheels is not recommended. Their service history may have included severetreatment.
DUAL REAR WHEELINSTALLATION
Dual rear wheels use a special heavy duty lug nut wrench. It is recommended to remove and install dual rear
wheels only when the proper wrench is available. The wrench is also use to remove wheel center caps for more
information refer to Owner’s Manual.
The tires on both wheels must be completely raised off the ground when tightening the lug nuts. This will ensure
correct wheel centering and maximum wheel clamping.
A two piece flat face lug nut with right-hand threads is
used for retaining the wheels on the hubs.
The dual rear wheel lug nuts should be tightened
according to the following procedure:
NOTE: Do not use more then two drops of oil on
the nut/washer (1), since the center caps attach in
this area.
Place two drops of oil to the interface of the nut/
washer (1) before installing on the wheel stud.
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Tighten the wheel lug nuts in the numbered sequential pattern until they are snug tight. Then tighten lug nut to
specified torque following same number sequence, (Refer to 22 - TIRES/WHEELS/WHEELS - SPECIFICA-
TIONS).
Tighten lug nuts in same numbered sequence a second time to the specified torque. This will ensure that the
wheels are thoroughly mated.
Check lug nut specified torque after 100 miles (160 kilometers). Also after 500 miles (800 kilometers) of vehicle
operation.
NOTE: Wheel lug nuts should be tightened to specified torque at every maintenance interval thereafter.
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STUDS
REMOVAL
1. Raise and support the vehicle.
2. Remove the wheel and tire assembly.
3. Remove the brake caliper, caliper adapter and
rotor, (Refer to 5 - BRAKES/HYDRAULIC/ME-
CHANICAL/ROTORS - REMOVAL).
4. Remove the wheel speed sensor from the hub.
5. Press the stud from the hub using remover
C-4150A (1).
6. Remove the stud (2) from the hub (1) through the
backing plate access hole (3).
INSTALLATION
1. Install the new stud (2) into the hub flange (1).
2. Install three proper sized washers onto the stud,
then install lug nut with the flat side of the nut
against the washers.
3. Tighten the lug nut until the stud is pulled into the
hub flange. Verify that the stud is properly seated
into the flange.
4. Remove the lug nut and washers.
5. Install the brake rotor, caliper adapter, and caliper,
(Refer to 5 - BRAKES/HYDRAULIC/MECHANICAL/
ROTORS - INSTALLATION).
6. Install the wheel speed sensor.
7. Install the wheel and tire assembly, use new lug nut on the stud or studs that were replaced.
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8. Remove the support and lower the vehicle.
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WHEEL COVER
REMOVAL
NOTE: The hub caps must be removed before raising the vehicle off the ground.
NOTE: You must use the flat end of the hub/cap remover/installer combination tool to pry off the wheel
skins. Insert the flat tip completely and using a back and forth motion, loosen the wheel skin. repeat this
procedure around the tire until the wheel skin pops off.
1. On 2500/3500 single rear wheel (SRW) models, insert a hub/cap remover/installer combination tool using the
blade on the end of the tool to pry the cap off in a back and forth motion.
2. On 3500 models with dual rear wheels (DRW), you must first remove the hub caps. The hub/cap remover/in-
staller combination tool must be inserted in the pry off notch of the rear hubcaps.
3. Position the hub/cap remover/installer combination tool and pull out on the tool firmly. The cap should come off.
NOTE: Failure to use a back and forth motion could damage the wheel skin chrome finish.
4. The wheel skins can now be removed from the wheel. Use the flat end of the lug nut wrench to pry off the wheel
skins. Make sure that the flat end is inserted and use a back and forth motionto remove the wheel skin.
5. On 3500 models front hub caps use the hub/cap remover/installer combination tool to pry off the cap in a back
and forth motion. The wheel skins can now be removed.
INSTALLATION
REAR
1. Install one 1 1/2 in. valve stem extension on each rear inner wheel.
NOTE: A 3/8 in. drive 10mm deep wheel socket with a 10 in. or greater extension can be used to remove the
existing valve stem cap and install the extension.
2. Install one 1 in. valve stem extension on each outer wheel.
3. Align the cooling windows of the wheel skin with the cooling windows of the wheel. Seat one side of the wheel
skin’s retainer onto the wheel. Using a rubber mallet, strike thew wheel skin on the outer circumference. Strike at
several locations around the circumference until the skin is fully seated.
NOTE: The wheel skin and the hub cap are fully seated when there is a consistent gap between the skin/cap
and the wheel.
4. Tug on the hub/cap wheel skin to ensure that they are properly installed.
FRONT
1. Alignthevalvestemwiththenotchinthewheelskin.
2. Seat on side of the wheel skin’s wire retainer on to the wheel.
3. Using a rubber mallet, strike the opposite side of the wheel skin until the skin is properly seated.
NOTE: The wheel skin and the hub cap are fully seated when there is a consistant gap between the skin/
cap and the wheel.
4. Tug on the hub cap/wheel skin to ensure that they are properly installed.
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SPARE TIRE
DESCRIPTION
SPARE / TEMPORARY TIRE
The temporary spare tire is designed for emergency use only. The original tire should be repaired or replaced at the
first opportunity, then reinstalled. Do not exceed speeds of 80 KMH (50 MPH). when using the temporary spare tire.
Refer to Owner’s Manual for complete details.
FULL SIZE, SPARE WHEEL WITH MATCHING TIRE
The spare is a full usage wheel with a matching tire, It can be used within the(posted legal) speed limits or distance
limitations as of the rest of the vehicles four tires. Refer to Owner’s Manual for complete details.