Jeep cherokee 2000 Service Manual page 1323

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DESCRIPTION AND OPERATION
WHEEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
DIAGNOSIS AND TESTING
WHEEL INSPECTION. . . . . . . . . . . . . . . . . . . . . . . 7
TIRE AND WHEEL RUNOUT . . . . . . . . . . . . . . . . . 7
DESCRIPTION AND OPERATION
WHEEL
DESCRIPTION
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 capac-
ity.
All models use stamped steel, cast aluminum or
forged aluminum wheels. Every wheel has raised sec-
tions between the rim flanges and rim drop well
called safety humps (Fig. 1).
Fig. 1 Safety Rim
1 – FLANGE
2 – RIDGE
3 – WELL
Initial inflation of the tire forces the bead over
these raised sections. In case of rapid loss of air pres-
WHEELS
TABLE OF CONTENTS
page
SERVICE PROCEDURES
WHEEL INSTALLATION . . . . . . . . . . . . . . . . . . . . . 8
TIRE AND WHEEL BALANCE. . . . . . . . . . . . . . . . . 9
SPECIFICATIONS
TORQUE CHART . . . . . . . . . . . . . . . . . . . . . . . . . 11
sure, 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 or lesser quality.
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 ham-
mering, 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
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 WARN-
ING.
TIRE AND WHEEL RUNOUT
Radial runout is the difference between the high
and low points on the tire or wheel (Fig. 2).
Lateral runout is the wobble of the tire or wheel.
TIRES AND WHEELS
TO USE EQUIVALENT
22 - 7
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