stall JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual

²Do not allow towing equipment to contact the
disabled vehicle's fuel tank.
²Do not allow anyone under the disabled vehicle
while it is lifted by the towing device.
²Do not allow passengers to ride in a vehicle
being towed.
²Always observe state and local laws regarding
towing regulations.
²Do not tow a vehicle in a manner that could
jeopardize the safety of the operator, pedestrians or
other motorists.
²Do not attach tow chains, T-hooks, or J-hooks to
a bumper, steering linkage, drive shafts or a non-re-
inforced frame hole.
²Do not tow a heavily loaded vehicle. Use a flat-
bed device to transport a loaded vehicle.
TWO-WHEEL-DRIVE VEHICLE TOWING
DaimlerChrysler Corporation recommends that a
vehicle be towed with the rear end lifted, whenever
possible.
WARNING: WHEN TOWING A DISABLED VEHICLE
AND THE DRIVE WHEELS ARE SECURED IN A
WHEEL LIFT OR TOW DOLLIES, ENSURE THE
TRANSMISSION IS IN THE PARK POSITION (AUTO-
MATIC TRANSMISSION) OR A FORWARD DRIVE
GEAR (MANUAL TRANSMISSION).
WARNING: ENSURE VEHICLE IS ON A LEVEL SUR-
FACE OR THE WHEELS ARE BLOCKED TO PRE-
VENT VEHICLE FROM ROLLING.
TWO WHEEL DRIVE TOWING-REAR END LIFTED
CAUTION: Do not use steering column lock to
secure steering wheel during towing operation.
2WD vehicles can be towed with the front wheels
on the surface for extended distances at speeds not
exceeding 48 km/h (30 mph).
(1) Attach wheel lift device to rear wheels.
(2) Place the transmission in neutral.
(3) Raise vehicle to towing position.
(4) Attach safety chains. Route chains so not to
interfere with tail pipe when vehicle is lifted.
(5) Turn the ignition switch to the OFF position to
unlock the steering wheel.
CAUTION: Do not use steering column lock to
secure steering wheel during towing operation.
(6) Secure steering wheel in straight ahead posi-
tion with a clamp device designed for towing.
(7) Place transmission in park.
TWO WHEEL DRIVE TOWING-FRONT END LIFTED
CAUTION: Many vehicles are equipped with air
dams, spoilers, and/or ground effect panels. To
avoid component damage, a wheel-lift towing vehi-
cle or a flat-bed hauling vehicle is recommended.
(1) Attach wheel lift device to rear wheels.
(2) Place the transmission in neutral.
(3) Raise the rear of the vehicle off the ground and
install tow dollies under rear wheels.
(4) Attach wheel lift device to front wheels and
raise vehicle to towing position.
(5) Attach the safety chains.
CAUTION: Do not use steering column lock to
secure steering wheel during towing operation.
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(7) Secure steering wheel in straight ahead posi-
tion with a clamp device designed for towing.
(8) Place transmission in park.
FOUR-WHEEL-DRIVE VEHICLE TOWING
DaimlerChrysler Corporation recommends that a
4WD vehicle be transported on a flat-bed device. A
Wheel-lift device can be used providedthe trailing
wheels are off the ground and positioned in
tow dollies.
WARNING: WHEN TOWING A DISABLED VEHICLE
AND THE DRIVE WHEELS ARE SECURED IN A
WHEEL LIFT OR TOW DOLLIES, ENSURE THE
TRANSMISSION IS IN THE PARK POSITION.
CAUTION: Many vehicles are equipped with air
dams, spoilers, and/or ground effect panels. To
avoid component damage, a wheel-lift towing vehi-
cle or a flat-bed hauling vehicle is recommended.
FOUR WHEEL DRIVE TOWINGÐREAR END LIFTED
WARNING: ENSURE VEHICLE IS ON A LEVEL SUR-
FACE OR THE WHEELS ARE BLOCKED TO PRE-
VENT VEHICLE FROM ROLLING.
(1) Attach wheel lift device to front wheels.
(2) Place the transmission in neutral.
(3) Raise the front of the vehicle off the ground
and install tow dollies under front wheels.
(4) Attach wheel lift device to rear wheels and
raise vehicle to towing position.
(5) Attach safety chains. Route chains so not to
interfere with tail pipe when vehicle is lifted.
WJLUBRICATION & MAINTENANCE 0 - 9
TOWING (Continued)

(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
CAUTION: Do not use steering column lock to
secure steering wheel during towing operation.
(7) Secure steering wheel in straight ahead posi-
tion with a clamp device designed for towing.
(8) Place transmission in park.
FOUR WHEEL DRIVE TOWINGÐFRONT END
LIFTED
WARNING: ENSURE VEHICLE IS ON A LEVEL SUR-
FACE OR THE WHEELS ARE BLOCKED TO PRE-
VENT VEHICLE FROM ROLLING.
(1) Attach wheel lift device to rear wheels.(2) Place the transmission in neutral.
(3) Raise the rear of the vehicle off the ground and
install tow dollies under rear wheels.
(4) Attach wheel lift device to front wheels and
raise vehicle to towing position.
(5) Attach the safety chains.
CAUTION: Do not use steering column lock to
secure steering wheel during towing operation.
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(7) Secure steering wheel in straight ahead posi-
tion with a clamp device designed for towing.
(8) Place transmission in park.
0 - 10 LUBRICATION & MAINTENANCEWJ
TOWING (Continued)

FRONT
TABLE OF CONTENTS
page page
FRONT
DESCRIPTION..........................6
STANDARD PROCEDURE - SERVICE
WARNINGS AND CAUTIONS..............6
SPECIFICATIONS
TORQUE CHART......................7
SPECIAL TOOLS
FRONT SUSPENSION...................8
BUSHINGS
REMOVAL.............................9
INSTALLATION..........................9
HUB / BEARING
DESCRIPTION..........................9
OPERATION............................9
REMOVAL.............................9
INSTALLATION.........................10
KNUCKLE
DESCRIPTION.........................10
OPERATION...........................10
REMOVAL - STEERING KNUCKLE..........10
INSTALLATION.........................10
LOWER BALL JOINT
REMOVAL.............................11
LOWER CONTROL ARM
DESCRIPTION.........................11
OPERATION...........................11
REMOVAL.............................11
INSTALLATION.........................11SHOCK
DESCRIPTION.........................12
OPERATION...........................12
REMOVAL.............................12
INSTALLATION.........................12
SPRING
DESCRIPTION.........................12
OPERATION...........................13
REMOVAL.............................13
INSTALLATION.........................13
STABILIZER BAR
DESCRIPTION.........................14
OPERATION...........................14
REMOVAL.............................14
INSTALLATION.........................14
TRACK BAR
DESCRIPTION.........................14
OPERATION...........................14
REMOVAL.............................14
INSTALLATION.........................14
UPPER BALL JOINT
REMOVAL.............................15
UPPER CONTROL ARM
DESCRIPTION.........................16
OPERATION...........................16
REMOVAL.............................16
INSTALLATION.........................16
FRONT
DESCRIPTION
The front suspension (Fig. 1) is a link/coil design
comprised of :
²Drive axle
²Shock absorbers
²Coil springs
²Upper and lower suspension arms
²Stabilizer bar
²Track bar
²Jounce bumpers
CAUTION: Components attached with a nut and cot-
ter pin must be torqued to specification. Then if the
slot in the nut does not line up with the cotter pin
hole, tighten nut until it is aligned. Never loosen the
nut to align the cotter pin hole.CAUTION: Suspension components with rubber
bushings must be tightened with the vehicle at nor-
mal ride height. It is important to have the springs
supporting the weight of the vehicle when the fas-
teners are torqued. If springs are not at their normal
ride position, vehicle ride comfort will be affected
and cause premature bushing wear.
STANDARD PROCEDURE - SERVICE
WARNINGS AND CAUTIONS
CAUTION: Suspension components with rubber
bushings must be tightened with the vehicle at nor-
mal ride height. It is important to have the springs
supporting the weight of the vehicle when the fas-
teners are torqued. If springs are not at their normal
ride position, vehicle ride comfort will be affected
and cause premature bushing wear.
2 - 6 FRONTWJ

SPECIAL TOOLS
FRONT SUSPENSION
Remover/Installer Suspension Bushing 7932
Spacer 8279
Nut, Long 7603
Bolt, Special 7604
Remover C-4150A
Remover/Installer 6289
Reciever 6761
Installer 6752
2 - 8 FRONTWJ
FRONT (Continued)

BUSHINGS
REMOVAL
(1) Remove the upper suspension arm from axle.
(2) Position Spacer 8279 over the axle bushing on
a 4x2 vehicle and right side on a 4x4 vehicle.
(3) Place Receiver 7932-1 over flanged end of the
bushing. (Fig. 2).
(4) Place small end of Remover/Install 7932-2
against other side of the bushing.
(5) Install bolt 7604 through remover, bushing and
receiver.
(6) Install Long Nut 7603 and tighten nut too pull
bushing out of the axle bracket.
(7) Remove nut, bolt, receiver, remover and bush-
ing.
NOTE: On 4x2 vehicle and right side of 4x4 vehicle,
leave Spacer 8279 in position for bushing installa-
tion.
INSTALLATION
(1) Place Receiver 7932-1on the other side of the
axle bracket.
(2) Position new bushing up to the axle bracket.,
and large end of Remover/Install 7932-2 against the
bushing (Fig. 3).
(3) Install bolt 7604 through receiver, bushing and
installer.
(4) Install Long Nut 7603 and tighten nut to draw
the bushing into the axle bracket.(5) Remove tools and install the upper suspension
arm.
HUB / BEARING
DESCRIPTION
The bearing used on the front hub of this vehicle is
the combined hub and bearing unit type assembly.
This unit assembly combines the front wheel mount-
ing hub (flange) and the front wheel bearing into a
one piece unit. The wheel mounting studs are the
only replaceable component of the hub/bearing
assembly.
OPERATION
The hub/bearing assembly is mounted to the steer-
ing knuckle and is retained by three mounting bolts
accessible from the back of the steering knuckle. The
hub/bearing unit is not serviceable and must be
replaced as an assembly if the bearing or the hub is
determined to be defective.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the wheel and tire assembly.
(3) Remove the brake caliper, caliper anchor, rotor
and ABS wheel speed sensor,(Refer to 5 - BRAKES/
ELECTRICAL/FRONT WHEEL SPEED SENSOR -
REMOVAL).
(4) Remove the cotter pin, nut retainer and axle
hub nut.
(5) Remove the hub bearing mounting bolts from
the back of the steering knuckle. Remove hub bear-
Fig. 2 Bushing Removal
1 - RECEIVER
2 - AXLE BRACKET
3 - BOLT
4 - REMOVER/INSTALLER
5 - LONG NUT
Fig. 3 Bushing Installation
1 - REMOVER/INSTALLER
2 - AXLE BRACKET
3 - BOLT
4 - RECEIVER
5 - LONG NUT
WJFRONT 2 - 9

ing (Fig. 4) from the steering knuckle and off the
axle shaft.
INSTALLATION
(1) Install the hub bearing to the knuckle.
(2) Install the hub bearing to knuckle bolts and
tighten to 102 N´m (75 ft. lbs.).
(3) Install the hub washer and nut. Tighten the
hub nut to 237 N´m (175 ft. lbs.). Install the nut
retainer and a new cotter pin.
(4) Install the brake rotor, caliper anchor, caliper
and ABS wheel speed sensor,(Refer to 5 - BRAKES/
ELECTRICAL/FRONT WHEEL SPEED SENSOR -
INSTALLATION).
(5) Install the wheel and tire assembly (Refer to 22
- TIRES/WHEELS - STANDARD PROCEDURE).
(6) Remove the support and lower the vehicle.
KNUCKLE
DESCRIPTION
The knuckle is a single casting with legs machined
for the upper and lower ball joints. The knuckle also
has machined mounting locations for the front brake
calipers and hub bearing.
OPERATION
The steering knuckle pivot between the upper and
lower ball joint. Steering linkage attached to the
knuckle allows the vehicle to be steered.
REMOVAL - STEERING KNUCKLE
Ball stud service procedures below require removal
of the hub bearing and axle shaft. Removal andinstallation of upper and lower ball studs require the
use of Tool Kit 6289.
(1) Remove hub bearing and axle shaft.
(2) Disconnect the tie-rod or drag link from the
steering knuckle arm,(Refer to 19 - STEERING/
LINKAGE/TIE ROD END - REMOVAL) .
(3) Remove the cotter pins from the upper and
lower ball studs.
(4) Remove the upper and lower ball stud nuts.
(5) Strike the steering knuckle with a brass ham-
mer to loosen knuckle from the ball studs. Remove
knuckle from ball studs (Fig. 5).
INSTALLATION
(1) Position the steering knuckle on the ball studs.
(2) Install and tighten the bottom retaining nut to
109 N´m (80 ft. lbs.) torque. Install new cotter pin.
(3) Install and tighten the top retaining nut to 101
N´m (75 ft. lbs.) torque. Install new cotter pin.
(4) Install the hub bearing and axle shaft.
(5) Connect the tie-rod or drag link end to the
steering knuckle arm.,(Refer to 19 - STEERING/
LINKAGE/TIE ROD END - INSTALLATION) .
Fig. 4 Hub Bearing & Knuckle
1 - HUB BEARING
2 - KNUCKLE
Fig. 5 Steering Knuckle Removal/Installation
1 - AXLE YOKE
2 - UPPER BALL STUD
3 - LOWER BALL STUD
4 - STEERING KNUCKLE
2 - 10 FRONTWJ
HUB / BEARING (Continued)

LOWER BALL JOINT
REMOVAL
Ball stud service procedures below require removal
of the hub bearing and axle shaft. Removal and
installation of upper and lower ball studs require the
use of Tool Kit 6289.
(1) Position tools as shown to remove and install
ball stud (Fig. 6).
LOWER CONTROL ARM
DESCRIPTION
The lower suspension arms are hydroformed steel
and use voided oval bushings at one end of the arm.
OPERATION
The bushings provide isolation from the axle. The
arms mount to the unibody frame rail bracket and
the axle brackets. The arm and bushings provide
location and react to loads from the axle.
REMOVAL
(1) Raise the vehicle and support the front axle.
(2) Remove the lower suspension arm nut and bolt
from the axle bracket (Fig. 7).
(3) Remove the nut and bolt from the frame rail
bracket and remove the lower suspension arm (Fig.
7).
INSTALLATION
(1) Position the lower suspension arm in the axle
bracket and frame rail bracket.
NOTE: The end of the arm with the oval bushing
attaches to the axle bracket.
(2) Install the axle bracket bolt and nut finger
tight.
(3) Install the frame rail bracket bolt and nut fin-
ger tight.
(4) Remove support and lower the vehicle.
(5) With the vehicle on the ground tighten the
frame bracket bolt to 156 N´m (115 ft. lbs.). Tighten
the axle bracket nut to 163 N´m (120 ft. lbs.).
(6) Check the alignment if new parts were
installed.
Fig. 6 Lower
1 - SPECIAL TOOL 6289±12
2 - SPECIAL TOOL 6289±4
3 - SPECIAL TOOL 4212F
4 - SPECIAL TOOL 4212F5 - SPECIAL TOOL 6289±1
6 - SPECIAL TOOL 6289±3
WJFRONT 2 - 11

SHOCK
DESCRIPTION
The top of the shock absorbers are bolted to the
body. The bottom of the shocks are bolted to the axle
brackets. The standard shocks have conventional
twin tube construction and are low pressure gas
charged. Gas charging prevents cavitation during
rough road operation. Up-Country shocks are mono
tube design and are high pressure gas charged.
OPERATION
The shock absorbers dampen jounce and rebound
motion of the vehicle over various road conditions
and limit suspension rebound travel.
REMOVAL
(1) Remove the nut, retainer and grommet from
the shock stud in the engine compartment (Fig. 8).
(2) Raise and support the front axle.
(3) Remove the lower mounting nuts from the axle
bracket (Fig. 9). Remove the shock absorber.
INSTALLATION
(1) Position the lower retainer and grommet on the
shock stud. Insert the shock absorber through the
shock tower hole.
(2) Install the lower shock studs into the axle
bracket.
(3) Install the mounting nuts and tighten to 28
N´m (250 in. lbs.).
(4) Remove support and lower the vehicle.(5) Install the upper grommet, retainer and nut on
the stud in the engine compartment. Hold the shock
stud witha8mmwrench and tighten the nut to 35
N´m (26 ft. lbs.).SPRING
DESCRIPTION
The coil springs mount up in the wheelhouse which
is part of the unitized body bracket. A rubber dough-
nut isolator is located between the top of the spring
and the body. The bottom of the spring seats on a
axle isolator made of rubber with a steel insert.
Fig. 7 Lower Suspension Arm
1 - LOWER SUSPENSION ARM
2 - FRAME RAIL BRACKET
3 - AXLE BRACKET
Fig. 8 Upper Shock Mounting
1 - RETAINER
2 - STUD
3 - NUT
4 - GROMMET
Fig. 9 Lower Shock Mounting
1 - SHOCK ABSORBER
2 - MOUNTING NUTS
2 - 12 FRONTWJ
LOWER CONTROL ARM (Continued)

OPERATION
The coil springs control ride quality and maintain
proper ride height. The isolators provide road noise
isolation.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the wheel and tire assemblies.
(3) Position a hydraulic jack under the axle to sup-
port it.
(4) Remove shock absorbers lower mounting nuts
from the axle brackets.
(5) Remove the track bar mounting bolt from the
axle bracket.
NOTE: Make sure the lower part of the shock does
not hold tension on the brake lines at the axle tube
housing located at the lower shock mounting area.
(6) Lower the axle until the spring is free from the
upper mount and isolator (Fig. 10).
(7) Remove the spring from the vehicle.
(8) Remove and inspect the upper and lower
spring isolators.
INSTALLATION
(1) Install the upper isolator.
(2) Install the lower isolator with the isolator loca-
tor nub in the axle pad hole (Fig. 11).
(3) Position the coil spring on the axle spring pad.CAUTION: Ensure the spring is positioned on the
lower isolator with the end of the spring coil
against the isolator spring locator (Fig. 12).
(4) Raise the axle and guide the springs onto the
spring upper mounts and lower shock studs into the
axle brackets.
(5) Install the shock absorbers lower mounting
nuts.
Fig. 10 Front Coil Spring
1 - UPPER ISOLATOR
2 - COIL SPRING
3 - LOWER ISOLATOR
4 - STABILIZER LINK
Fig. 11 Lower Isolator
1 - LOCATING NUB
2 - LOWER ISOLATOR
3 - AXLE SPRING PAD
4 - LOCATING HOLE
Fig. 12 Isolator Spring Locator
1 - COIL SPRING
2 - SPRING LOCATOR
3 - LOWER ISOLATOR
WJFRONT 2 - 13
SPRING (Continued)

(6) Install the track bar to the axle bracket and
install the mounting bolt.
NOTE: It may be necessary to pry the axle assem-
bly over to install the track bar bolt.
(7) Remove the hydraulic jack from under the
vehicle.
(8) Tighten all suspension components to proper
torque.
(9) Install the wheel and tire assemblies.
(10) Remove support and lower vehicle.
STABILIZER BAR
DESCRIPTION
The bar extends across the front underside of the
chassis and is mounted to the frame rails. Links are
connected from the bar to the axle brackets. The sta-
bilizer bar and links are isolated by rubber bushings.
OPERATION
The stabilizer bar is used to control vehicle body
roll during turns. The spring steel bar helps to con-
trol the vehicle body in relationship to the suspen-
sion.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove link nuts and bolts (Fig. 13) and
remove the links.
(3) Remove the stabilizer bar retainer bolts (Fig.
13)from the frame rails and remove the stabilizer
bar.
INSTALLATION
(1) Position the stabilizer bar on the frame rail
and install the retainers and bolts. Ensure the bar is
centered with equal spacing on both sides. Tighten
the bolts to 92 N´m (68 ft. lbs.).
(2) Install the links onto the stabilizer bar and
axle brackets and install the bolts and nuts finger
tight.
(3) Remove the supports and lower the vehicle.
(4) With the vehicle on the ground tighten the sta-
bilizer bar link nuts to 106 N´m (78 ft. lbs.).
TRACK BAR
DESCRIPTION
The bar is attached to a frame rail bracket and
axle bracket. The bar is forged and has non replace-
able isolator bushings at both ends.
OPERATION
The track bar is used to control front axle lateral
movement and provides cross car location of the axle
assembly.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the nut and bolt from the frame rail
bracket (Fig. 14).
(3) Remove the bolt from the axle shaft tube
bracket (Fig. 15). Remove the track bar.
INSTALLATION
(1) Install the track bar to the axle tube bracket.
Install the retaining bolt finger tight.
Fig. 13 Stabilizer Bar
1 - LINK
2 - STABILIZER BAR
3 - BUSHING
4 - RETAINER
Fig. 14 Track Bar Frame Rail Bracket
1 - FRAME RAIL
2 - TRACK BAR
2 - 14 FRONTWJ
SPRING (Continued)