Page 717 of 865
3. Placement of the jack:
Front Jacking Location
When changing the front wheel, assemble the jack drive
tube to the jack and connect the drive tube to the
extension tube. Place the jack under the axle as close to
the tire as possible with the drive tubes extending to the
front. Connect the jack tube extension and wheel wrench.
Front Jacking Location
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WHAT TO DO IN EMERGENCIES 715
Page 718 of 865
Rear Jacking Location
When changing a rear wheel, assemble the jack drive
tube to the jack and connect the drive tube to the
extension tube. Place the jack under the axle between the
spring and the shock absorber with the drive tubes
extending to the rear.Connect the jack tube extension and wheel wrench.
CAUTION!
Before raising the wheel off the ground, make sure
that the jack will not damage surrounding truck parts
and adjust the jack position as required.
NOTE: If the bottle jack will not lower by turning the dial
(thumbwheel) by hand, it may be necessary to use the
jack drive tube in order to lower the jack.
4. By rotating the wheel wrench clockwise, raise the vehicle until the wheel just clears the surface.
WARNING!
Raising the vehicle higher than necessary can make
the vehicle unstable and cause a collision. It could
slip off the jack and hurt someone near it. Raise the
vehicle only enough to remove the tire.
Rear Jacking Location
716 WHAT TO DO IN EMERGENCIES
Page 719 of 865
5. Remove the wheel nuts and pull the wheel off. Onsingle rear-wheel (SRW) trucks, install the spare wheel
and wheel nuts with the cone shaped end of the wheel
nuts toward the wheel. On 3500 dual rear-wheel
models (DRW) trucks, if the outer tire is being re-
placed then leave the inner wheel on the vehicle. If the
inner wheel is being replaced remove the outer wheel
and replace the inner wheel. The wheel nuts are a
two-piece assembly with a flat face. Lightly tighten the
wheel nuts. To avoid the risk of forcing the vehicle off
the jack, do not fully tighten the wheel nuts until the
vehicle has been lowered.
Rear Inner Wheel Proper Placement (Dual Rear Wheel
Equipped)
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WHAT TO DO IN EMERGENCIES 717
Page 720 of 865
6. Finish tightening the lug nuts. Push down on thewrench while at the end of the handle for increased
leverage. Tighten the lug nuts in a star pattern until
each nut has been tightened twice. For the correct lug
nut torque refer to “Torque Specifications” in this
section. If in doubt about the correct tightness, have
them checked with a torque wrench by you authorized
dealer or service station.
WARNING!
A loose tire or jack thrown forward in a collision or
hard stop could injure someone in the vehicle. Al-
ways stow the jack parts and the extra tire and wheel
in the places provided.
Dual Rear Wheel Placement
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Page 721 of 865
7. Install the wheel center cap and remove the wheelblocks. Do not install chrome or aluminum wheel
center caps on the spare wheel. This may result in cap
damage.
8. Lower the jack to its fully closed position. Stow the replaced tire, jack, and tools as previously described.
NOTE: If the bottle jack will not lower by turning the dial
(thumbwheel) by hand, it may be necessary to use the
jack drive tube in order to lower the jack.
9. Adjust the tire pressure when possible.
NOTE: Do not oil wheel studs. For chrome wheels, do
not substitute with chrome plated wheel nuts.To Stow The Flat Or Spare
NOTE: Have the flat tire repaired or replaced immedi-
ately.
WARNING!
A loose tire thrown forward in a collision or hard
stop could injure the occupants in the vehicle. Have
the deflated (flat) tire repaired or replaced immedi-
ately.
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WHAT TO DO IN EMERGENCIES 719
Page 722 of 865
1. Turn the wheel so that the valve stem is facing theground and toward the rear of the vehicle for conve-
nience in checking the spare tire inflation. Slide the
wheel retainer through the center of the wheel. 2. Lift the spare tire with one hand to give clearance to
tilt the retainer at the end of the cable and position it
properly across the wheel opening.
Reinstalling The Retainer
Pushing The Retainer Through The Center Of The
Wheel And Positioning It
720 WHAT TO DO IN EMERGENCIES
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3. Attach the wheel wrench to the jack extension tubewith the curved angle facing away from the vehicle.
Insert the tube through the access hole between the
lower tailgate and the top of the bumper and into the
winch mechanism tube. 4. Rotate the wheel wrench handle clockwise until the
wheel is drawn into place against the underside of the
vehicle. Continue to rotate until you feel the winch
mechanism slip, or click three or four times. It cannot
be overtightened. Push against the tire several times to
ensure it is firmly in place.
Wheel Wrench And Jack Extension Tube Assembled And
In Position
Rotating The Wheel Wrench Handle
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WHAT TO DO IN EMERGENCIES 721
Page 726 of 865

Hub Caps/Wheel Covers — If Equipped
The hub caps must be removed before raising the vehicle
off the ground.
CAUTION!
Use extreme caution when removing the front and
rear center caps. Damage can occur to the center cap
and/or the wheel if screwdriver type tools are used. A
pulling motion, not a pry off motion, is recom-
mended to remove the caps.
For single rear wheel (SRW) models, use the flat blade on
the end of the lug wrench to pull the hub cap off. Insert
the blade end into the pull off notch and carefully pull the
hub cap off with a back and forth motion. On 3500 models with dual rear wheels (DRW), you must
first remove the hub caps. The jack handle driver has a
hook at one end that will fit in the pull off notch of the
rear hub caps. Position the hook and pull straight out on
the ratchet firmly. The hub cap should pop off. The wheel
skins can now be removed. For the front hub cap, use the
flat blade on the end of the lug wrench to pull the caps
off. The wheel skin can now be removed.
CAUTION!
•
Use a pulling motion to remove the hub cap. Do not
use a twisting motion when removing the hub cap,
damage to the hub cap; finish may occur.
• The rear hub caps on the dual rear wheel has two
pull off notches. Make sure that the hook of the
jack handle driver is located squarely in the cap
notch before attempting to pull off.
724 WHAT TO DO IN EMERGENCIES