wheel JEEP LIBERTY 2002 KJ / 1.G Workshop Manual

TIRES
DESCRIPTION
DESCRIPTION - TIRES
Tires are designed and engineered for each specific
vehicle. They provide the best overall performance
for normal operation. The ride and handling charac-
teristics match the vehicle's requirements. With
proper care they will give excellent reliability, trac-
tion, skid resistance, and tread life.
Driving habits have more effect on tire life than
any other factor. Careful drivers will obtain in most
cases, much greater mileage than severe use or care-
less drivers. A few of the driving habits which will
shorten the life of any tire are:
²Rapid acceleration
²Severe brake applications
²High speed driving
²Excessive speeds on turns
²Striking curbs and other obstacles
Radial-ply tires are more prone to irregular tread
wear. It is important to follow the tire rotation inter-
val,(Refer to 22 - TIRES/WHEELS - STANDARD
PROCEDURE). This will help to achieve a greater
tread life.
TIRE IDENTIFICATION
Tire type, size, aspect ratio and speed rating are
encoded in the letters and numbers imprinted on the
side wall of the tire. Refer to the chart to decipher
the tire identification code (Fig. 11).
Performance tires have a speed rating letter after
the aspect ratio number.
LETTER SPEED RATING
S 180 km/h (112 mph)
T 190 km/h (118 mph)
U 200 km/h (124 mph)
H 210 km/h (130 mph)
V 240 km/h (149 mph)
W 270 km/h (168 mph)
Y 300 km/h (186 mph)
The speed rating is not always printed on the tire
sidewall.
TIRE CHAINS
Tire snow chains may be used oncertainmodels.
Refer to the Owner's Manual for more information.
DESCRIPTION - RADIAL-PLY TIRES
Radial-ply tires improve handling, tread life and
ride quality, and decrease rolling resistance.
Radial-ply tires must always be used in sets of
four. Under no circumstances should they be used on
the front only. They may be mixed with temporary
spare tires when necessary. A maximum speed of 50
MPH is recommended while a temporary spare is in
use.
Radial-ply tires have the same load-carrying capac-
ity as other types of tires of the same size. They also
use the same recommended inflation pressures.
The use of oversized tires, either in the front or
rear of the vehicle, can cause vehicle drive train fail-
ure. This could also cause inaccurate wheel speed
signals when the vehicle is equipped with Anti-Lock
Brakes.
The use of tires from different manufactures on the
same vehicle is NOT recommended. The proper tire
pressure should be maintained on all four tires.
DESCRIPTION - SPARE TIRE &TEMPORARY
The temporary spare tire is designed for emer-
gency use only. The original tire should be repaired
or replaced at the first opportunity, then reinstalled.
Do not exceed speeds of 50 M.P.H. when using the
temporary spare tire. Refer to Owner's Manual for
complete details.
Fig. 11 Tire Identification
22 - 6 TIRES/WHEELSKJ

DESCRIPTION - REPLACEMENT TIRES
The original equipment tires provide a proper bal-
ance of many characteristics such as:
²Ride
²Noise
²Handling
²Durability
²Tread life
²Traction
²Rolling resistance
²Speed capability
It is recommended that tires equivalent to the orig-
inal equipment tires be used when replacement is
needed.
Failure to use equivalent replacement tires may
adversely affect the safety and handling of the vehi-
cle.
The use of oversize tires may cause interference
with vehicle components. Under extremes of suspen-
sion and steering travel, interference with vehicle
components may cause tire damage.
WARNING: FAILURE TO EQUIP THE VEHICLE WITH
TIRES HAVING ADEQUATE SPEED CAPABILITY
CAN RESULT IN SUDDEN TIRE FAILURE.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - TIRE INFLATION
Under inflation will cause rapid shoulder wear, tire
flexing, and possible tire failure (Fig. 12).
Over inflation will cause rapid center wear and
loss of the tire's ability to cushion shocks (Fig. 13).
Improper inflation can cause:
²Uneven wear patterns²Reduced tread life
²Reduced fuel economy
²Unsatisfactory ride
²Vehicle drift
For proper tire pressure specification refer to the
Tire Inflation Pressure Chart provided with the vehi-
cle.
Tire pressures have been chosen to provide safe
operation, vehicle stability, and a smooth ride. Tire
pressure should be checked cold once a month. The
spare tire pressure should be check at least twice
annually. Tire pressure decreases as the ambient
temperature drops. Check tire pressure frequently
when ambient temperature varies widely.
Inflation pressures specified on the placards are
cold inflation pressure. The vehicle must sit for at
least 3 hours to obtain the correct cold inflation pres-
sure reading. Or driven less than one mile after sit-
ting for 3 hours. Tire inflation pressures may
increase from 2 to 6 pounds per square inch (psi)
during operation, due to increased tire temperature.
WARNING: OVER OR UNDER INFLATED TIRES CAN
AFFECT VEHICLE HANDLING AND TREAD WEAR.
THIS MAY CAUSE THE TIRE TO FAIL SUDDENLY,
RESULTING IN LOSS OF VEHICLE CONTROL.
Fig. 12 Under Inflation
1 - THIN TIRE THREAD AREAS
Fig. 13 Over Inflation Wear
1 - THIN TIRE THREAD AREA
KJTIRES/WHEELS 22 - 7
TIRES (Continued)

DIAGNOSIS AND TESTING - TREAD WEAR
INDICATORS
Tread wear indicators are molded into the bottom
of the tread grooves. When tread depth is 1.6 mm
(1/16 in.), the tread wear indicators will appear as a
13 mm (1/2 in.) band (Fig. 14).
Tire replacement is necessary when indicators
appear in two or more grooves or if localized balding
occurs.
DIAGNOSIS AND TESTING - TIRE WEAR
PATTERNS
Under inflation will cause wear on the shoulders of
tire. Over inflation will cause wear at the center of
tire.
Excessive camber causes the tire to run at an
angle to the road. One side of tread is then worn
more than the other (Fig. 15).
Excessive toe-in or toe-out causes wear on the
tread edges and a feathered effect across the tread
(Fig. 15).
DIAGNOSIS AND TESTING - TIRE NOISE OR
VIBRATION
Radial-ply tires are sensitive to force impulses
caused by improper mounting, vibration, wheel
defects, or possibly tire imbalance.
To find out if tires are causing the noise or vibra-
tion, drive the vehicle over a smooth road at varyingspeeds. Note the noise level during acceleration,
deceleration and slight left and right steering inputs.
STANDARD PROCEDURE - REPAIRING LEAKS
For proper repairing, a radial tire must be removed
from the wheel. Repairs should only be made if the
defect, or puncture, is in the tread area (Fig. 16). The
tire should be replaced if the puncture is located in
the sidewall.
Deflate tire completely before removing the tire
from the wheel. Use lubrication such as a mild soap
solution when dismounting or mounting tire. Use
tools free of burrs or sharp edges which could dam-
age the tire or wheel rim.
Before mounting tire on wheel, make sure all rust
is removed from the rim bead and repaint if neces-
sary.
Install wheel on vehicle, and tighten to proper
torque specification.
CLEANING
Remove the protective coating on the tires before
delivery of a vehicle. This coating may cause deteri-
oration of the tires.
To remove the protective coating, apply warm
water and let it soak for a few minutes. Afterwards,
scrub the coating away with a soft bristle brush.
Steam cleaning may also be used to remove the coat-
ing.
NOTE: DO NOT use gasoline, mineral oil, oil-based
solvent or a wire brush for cleaning.
SPECIFICATIONS
SPECIFICATIONS
DESCRIPTION SPECIFICATION
Tire P215/75R16
Tire P235/70R16
Spare Tire P215/75D16
POLYSPARE ONLY ON
169
SPARE TIRE
REMOVAL
(1) Raise the license plate.
(2) Remove the two bolts securing the wheel cover
to the wheel.
(3) Remove the two lug nuts and the one wheel
lock (if equipped) securing the tire/wheel to the spare
tire carrier.
(4) Remove the spare tire.
Fig. 14 Tread Wear Indicators
1 - TREAD ACCEPTABLE
2 - TREAD UNACCEPTABLE
3 - WEAR INDICATOR
22 - 8 TIRES/WHEELSKJ
TIRES (Continued)

INSTALLATION
(1) Install the spare tire onto the studs on the car-
rier.
(2) Install the two lug nuts and one wheel lock (if
equipped). Tighten the nuts to 115 N´m (85 ft.lbs.)
(3) Close the plastic wheel cover and install the
two mounting bolts. Tighten the nuts to 115 N´m (85
ft.lbs.)
(4) Close the license plate to cover the bolts and
latch.
WHEELS
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. 17).
Fig. 15 Tire Wear Patterns
Fig. 16 Tire Repair Area
1 - REPAIRABLE AREA
Fig. 17 Safety Rim
1 - FLANGE
2 - RIDGE
3 - WELL
KJTIRES/WHEELS 22 - 9
SPARE TIRE (Continued)

Initial inflation of the tire forces the bead over
these raised sections. In case of rapid loss of air pres-
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 - WHEELS
Inspect wheels for:
²Excessive run out
²Dents or cracks
²Damaged wheel lug nut holes
²Air Leaks from any area or surface of the rim
NOTE: Do not attempt to repair a wheel by hammer-
ing, 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 RECOM-
MENDED. THE SERVICE HISTORY OF THE WHEEL
MAY HAVE INCLUDED SEVERE TREATMENT OR
VERY HIGH MILEAGE. THE RIM COULD FAIL WITH-
OUT WARNING.
STANDARD PROCEDURE
STANDARD PROCEDURE - WHEEL
REPLACEMENT
Wheels must be replaced if they have:
²Excessive runout
²Bent or dented
²Leak air through welds
²Have 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:
²Load carrying capacity
²Diameter
²Width
²Offset²Mounting configuration
Failure to use equivalent replacement wheels may
affect the safety and handling of your vehicle.
Replacement withusedwheels is not recommended.
Their service history may have included severe treat-
ment.
STANDARD PROCEDURE - WHEEL MOUNTING
The wheel studs and nuts are designed for specific
applications. They must be 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 aluminum wheels.
NOTE: Do not use chrome plated lug nuts with
chrome plated wheels.
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 han-
dling of your vehicle.
To install the wheel, first position it properly on
the mounting surface. All wheel nuts should then be
tightened just snug. Gradually tighten them in
sequence to the proper torque specification (Fig. 18).
Never use oil or grease on studs or nuts.
Fig. 18 Lug Nut Tightening Pattern
22 - 10 TIRES/WHEELSKJ
WHEELS (Continued)

SPECIFICATIONS
SPECIFICATION
TORQUE SPECIFICATIONS
DESCRIPTION N´m Ft. Lbs. In. Lbs.
Lug Nut 1/2 X 20 with 60É
Cone115-155 85-115 Ð
STUDS
REMOVAL
CAUTION: Do not use a hammer to remove wheel
studs.
(1) Raise and support vehicle.
(2) Remove wheel and tire assembly.
(3) Remove brake caliper, caliper adapter and
rotor,(Refer to 5 - BRAKES/HYDRAULIC/MECHAN-
ICAL/DISC BRAKE CALIPERS - REMOVAL).
(4) Remove stud from hub with Remover C-4150A
(Fig. 19).
INSTALLATION
CAUTION: Do not use a hammer to remove wheel
studs.
(1) Install new stud into hub flange.
(2) Install three washers onto stud, then install
lug nut with the flat side of the nut against the
washers.
(3) Tighten lug nut until the stud is pulled into
the hub flange. Verify that the stud is properly
seated into the flange.
(4) Remove lug nut and washers.
(5) Install the brake rotor, caliper adapter, and cal-
iper, (Refer to 5 - BRAKES/HYDRAULIC/MECHAN-
ICAL/ROTORS - INSTALLATION).(6) Install wheel and tire assembly (Refer to 22 -
TIRES/WHEELS/WHEELS - STANDARD PROCE-
DURE), use new lug nut on stud or studs that were
replaced.
(7) Remove support and lower vehicle.Fig. 19 Wheel Stud Removal
1 - REMOVER
2 - WHEEL STUD
KJTIRES/WHEELS 22 - 11
WHEELS (Continued)

INDEX
DESCRIPTION FIGURE
FRONT END ASSEMBLY
INNER FRONT PANELS ( 4 )
INNER WHEELHOUSE ASSEMBLIES ( 5 )
INNER WHEEL HOUSES & LOWER REINFORCEMENTS ( 6 )
FRONT BUMPER CROSSMEMBER ASSEMBLY ( 7 )
INNER FRONT WHEELHOUSE ASSEMBLY ( 8 )
FRONT INNER RAIL ASSEMBLY ( 9 )
FRONT INNER RAILS AND BRACKET WELD POINTS ( 10 )
FRONT INNER RAILS AND BRACKET WELD POINTS ( 11 )
FRONT OUTER RAIL & TORQUE BOX ( 12 )
FRONT OUTER RAIL ASSEMBLIES ( 13 )
FRONT OUTER RAILS AND BRACKET WELD POINTS ( 14 )
INNER FRONT WHEELHOUSE ASSEMBLY - COMPLETE ( 15 )
INNER FRONT WHEELHOUSE TO RAILS ( 16 )
COWL SIDE PANEL ASSEMBLIES ( 17 )
PLENUM ASSEMBLY ( 18 )
PLENUM BAFFLE & PLENUM CLOSURE PANEL ( 19 )
PLENUM BAFFLE & STEERING COLUMN REINFORCEMENT ( 20 )
FRONT END ASSEMBLY/UNDERBODY
FLOOR PAN ASSEMBLY ( 21 )
FLOOR PAN AND DASH PANEL ( 22 )
DASH PANEL AND PLENUM ( 23 )
WHEELHOUSE, FLOOR PAN, DASH PANEL AND PLENUM ASSEMBLY ( 24 )
COWL SIDE PANEL ( 25 )
REAR FRAME RAILS
REAR FRAME RAIL ASSEMBLY ( 26 )
REAR CONTROL ARM AND SHOCK MOUNTING BRACKETS ( 27 )
REAR SPRING MOUNTING BRACKETS AND REINFORCEMENTS ( 28 )
REAR SPRING REINFORCEMENTS, SHOCK MOUNTING, FUEL PASS AND EXHAUST
HANGER BRACKET(29)
REAR WHEELHOUSE ASSEMBLIES ( 30 )
FRONT AND REAR RAIL REINFORCEMENTS ( 31 )
REAR FLOOR PAN ASSEMBLY
REAR FLOOR PAN, COMPRESSION AND ANCHOR PLATE ASSEMBLY ( 32 )
SWING GATE AND BUMPER REINFORCEMENT ( 33 )
FLOOR PAN AND REAR RAIL ASSEMBLIES ( 34 )
FLOOR PAN AND REAR RAIL ADHESIVE LOCATIONS ( 35 )
FLOOR PAN AND REAR RAIL WELD LOCATIONS ( 36 )
REAR FLOOR PAN, CROSSMEMBERS AND FUEL TANK REINFORCEMENTS ( 38 )
23 - 10 BODY STRUCTUREKJ
WELD AND STRUCTURAL ADHESIVE LOCATIONS (Continued)

DESCRIPTION FIGURE
FULL FLOOR PAN ASSEMBLY
FULL FLOOR PAN ASSEMBLIES ( 39 )
FLOOR PAN AND RAIL ASSEMBLY ADHESIVE LOCATIONS ( 40 )
FLOOR PAN AND RAIL ASSEMBLY WELD LOCATIONS ( 41 )
FLOOR PAN, BODY SIDE SILL, COWL SIDE PANEL AND CROSSMEMBERS ( 42 )
WHEELHOUSE ADHESIVE LOCATIONS ( 43 )
WHEELHOUSE WELD LOCATIONS ( 44 )
BODY SIDE PANELS AND SUB ASSEMBLIES
A-PILLAR AND HEADER MOUNTING REINFORCEMENTS ( 45 )
B-PILLAR REINFORCEMENTS ( 46 )
C-PILLAR AND SEAT BACK MOUNTING REINFORCEMENTS ( 47 )
D-PILLAR REINFORCEMENTS ( 48 )
TAIL LAMP MOUNTING PANEL AND GATE STRIKER REINFORCEMENT ( 49 )
TAIL LAMP MOUNTING PANEL AND TAIL LAMP EXTENSION ( 50 )
SWING GATE OPENING PANEL AND ROOF HEADER ( 51 )
BODY SIDE PANELS
BODY SIDE PANEL ASSEMBLY ( 52 )
BODY SIDE OUTER, INNER FENDER REINFORCEMENT AND FENDER ASSEMBLY ( 53 )
BODY SIDE OUTER AND INNER PANELS; A-PILLAR ( 54 )
LOWER INNER BODY SIDE PANELS AND UPPER A-PILLARS ( 55 )
BODY SIDE PANEL ASSEMBLIES AND B-PILLAR. ( 56 )
BODY SIDE PANEL ASSEMBLIES AND C-PILLAR REINFORCEMENT ( 57 )
QUARTER WINDOW OPENING; SEAT BACK ATTACH REINFORCEMENT; C-PILLAR
REINFORCEMENT(58)
BODY SIDE PANEL ASSEMBLIES AND OUTER REAR WHEELHOUSES ( 59 )
OUTER REAR WHEELHOUSE WELDS AND ADHESIVE LOCATIONS ( 60 )
D-PILLAR AND TAIL LAMP ASSEMBLY WELD AND ADHESIVE LOCATIONS ( 61 )
SWING GATE STRIKER REINFORCEMENT WELDS AND ADHESIVE LOCATIONS ( 62 )
REAR WHEELHOUSE WELDS AND TAIL LAMP ADHESIVE LOCATIONS ( 63 )
FENDER ASSEMBLIES
INNER FENDER REINFORCEMENT AND GUSSETS ( 64 )
INNER FENDER REINFORCEMENT, GUSSETS, PLENUM AND WHEELHOUSES ( 65 )
INNER FENDER REINFORCEMENT AND WHEELHOUSES ( 66 )
PLENUM ASSEMBLY AND INNER SIDE PANELS ( 67 )
ROOF PANEL ASSEMBLIES
ROOF PANEL ASSEMBLY ( 68 )
ROOF PANEL AND BODY SIDE WELD AND ADHESIVE LOCATIONS ( 69 )
ROOF PANEL AND BODY SIDE WELD AND ADHESIVE LOCATIONS - SUNROOF
EQUIPPED(70)
ROOF AND HEADER PANEL ASSEMBLY ( 71 )
KJBODY STRUCTURE 23 - 11
WELD AND STRUCTURAL ADHESIVE LOCATIONS (Continued)

DESCRIPTION FIGURE
BODY SIDE PANELS & FLOOR PAN ASSEMBLIES
BODY SIDE PANEL AND FLOOR PAN ASSEMBLIES ( 72 )
BODY SIDE SILLS AND REAR WHEELHOUSES ( 73 )
ROOF HEADER AND WHEELHOUSE WELDS AND ADHESIVE LOCATIONS ( 74 )
SWING GATE OPENING PANEL; GATE STRIKER REINFORCEMENT; D-PILLAR
REINFORCEMENT ADHESIVE AND WELD LOCATIONS(75)
SWING GATE OPENING PANEL; D-PILLAR LOWER TO FLOOR GUSSET; GATE
OPENING REINFORCEMENT(76)
REAR FLOOR PAN AND CROSSMEMBER; TAIL LAMP MOUNTING; SWING GATE
OPENING PANEL;(77)
23 - 12 BODY STRUCTUREKJ
WELD AND STRUCTURAL ADHESIVE LOCATIONS (Continued)

Fig. 5 INNER WHEEL HOUSES
23 - 14 BODY STRUCTUREKJ
WELD AND STRUCTURAL ADHESIVE LOCATIONS (Continued)