Jeep Grand Cherokee WK. Manual — part 14
LOWER BALL JOINT
DIAGNOSIS AND TESTING
LOWER BALL JOINT
NOTE: If the ball joint is equipped with a lubrication fitting, grease the joint then road test the vehicle before
performing test.
1. Raise the front of the vehicle. Place safety floor stands under both lower control arms as far outboard as pos-
sible. Lower the vehicle to allow the stands to support some or all of the vehicle weight.
2. Mount a dial indicator solidly to the topside of the lower control arm and then zero the dial indicator.
3. Position the indicator plunger against the bottom surface of the steering knuckle.
NOTE: The dial indicator plunger must be perpendicular to the machined surface of the steering knuckle.
4. Position a pry bar under the tire assembly. Pry upwards on the tire assembly.
5. If the travel exceeds 0.5 mm (0.020 in.), replace the lower ball joint (Refer to 2 - SUSPENSION/FRONT/LOWER
BALL JOINT - REMOVAL).
REMOVAL
1. Remove the tire and wheel assembly.
2. Remove the brake caliper and rotor (Refer to 5 -
BRAKES/HYDRAULIC/MECHANICAL/ROTORS
-
REMOVAL).
3. Disconnect the tie rod (1) from the steering knuckle
using special tool C-3894-A (1) (Refer to 19 -
STEERING/LINKAGE/TIE ROD END - REMOVAL).
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FRONT
WK
4. Separate the upper ball joint (2) from the knuckle
(3) using special tool 8677 (1).
5. Separate the lower ball joint (3) from the steering
knuckle (1) using special tool 8677 (2).
6. Remove the steering knuckle (Refer to 2 - SUSPENSION/FRONT/KNUCKLE - REMOVAL).
7. Move the halfshaft to the side and support the halfshaft out of the way 4X4 only.
8. Chisel out the ball joint stakes.
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FRONT
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NOTE: Extreme pressure lubrication must be used
on the threaded portions of the tool. This will
increase the longevity of the tool and insure
proper operation during the removal and installa-
tion process.
9. Press the ball joint from the lower control arm (3)
using
special
tools
C-4212-F
(PRESS)
(1),
C–4212–3 (Driver) (2) and 9654–3 (Receiver) (4).
INSTALLATION
NOTE: Extreme pressure lubrication must be used
on the threaded portions of the tool. This will
increase the longevity of the tool and insure
proper operation during the removal and installa-
tion process.
1. Install the ball joint (4) into the control arm (3) and
press in using special tools C-4212-F (press) (1),
9654–1 (Driver) (5) and 9654–2 (Receiver) (2).
2. Stake the ball joint flange in four evenly spaced places around the ball joint flange, using a chisel and hammer.
3. Remove the support for the halfshaft and install into position 4X4 only.
4. Install the steering knuckle (Refer to 2 - SUSPENSION/FRONT/KNUCKLE - INSTALLATION).
5. Install the tie rod end into the steering knuckle (Refer to 19 - STEERING/LINKAGE/TIE ROD END - INSTALLA-
TION).
6. Install and tighten the halfshaft nut to 251 N·m (185 ft. lbs.). (If Equipped).
7. Install the brake caliper and rotor (Refer to 5 - BRAKES/HYDRAULIC/MECHANICAL/ROTORS - INSTALLA-
TION).
8. Install the tire and wheel assembly (Refer to 22 - TIRES/WHEELS/WHEELS - STANDARD PROCEDURE).
9. Check the vehicle ride height (Refer to 2 - SUSPENSION/WHEEL ALIGNMENT - STANDARD PROCEDURE).
10. Perform a wheel alignment (Refer to 2 - SUSPENSION/WHEEL ALIGNMENT - STANDARD PROCEDURE).
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FRONT
WK
LOWER CONTROL ARM
DESCRIPTION
The front lower suspension arms are cast iron.
OPERATION
The bushings provide isolation from the road. The arms mount to the cradle bracket and the knuckle. The arm and
bushings provide location and react to loads from the road.
REMOVAL
1. Raise and support the vehicle.
2. Remove the tire and wheel assembly.
3. Remove the steering knuckle (3). (Refer to 2 -
SUSPENSION/FRONT/KNUCKLE - REMOVAL).
4. Remove the shock clevis bracket (2) from the lower
control arm.
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FRONT
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