Jeep Wrangler TJ. Manual — part 205
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
Suspension Arm Lower
Frame Bracket Nut
203
150
—
Suspension Arm Upper
Axle Bracket Nut
75
55
—
Suspension Arm Upper
Frame Bracket Bolt
75
55
—
Stabilizer Bar
Retainer Bolts
54
40
—
Stabilizer Bar
Link Nut/Bolt
54
40
—
Track Bar
Frame Bracket Nut
100
74
—
Track Bar
Axle Bracket Bolt
100
74
—
JOUNCE BUMPER
DESCRIPTION
The jounce bumpers are mounted inside the coil
spring to the frame rail.
OPERATION
The jounce bumpers are used to limit suspension
travel in compression.
LOWER CONTROL ARM
DESCRIPTION
The lower suspension arms are steel and use bush-
ings at each end of the arm. The arms are mounted
from the frame to the axle brackets.
OPERATION
The bushings isolation axle and road noise. The
arm and bushings provide location and react to loads
from the axle.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the lower suspension arm nut and bolt
at the axle bracket (Fig. 1).
(3) Remove the nut and bolt at the frame rail
mount (Fig. 2) and remove the lower suspension arm.
INSTALLATION
(1) Position the lower suspension arm in the axle
bracket and frame rail mount.
(2) Install the mounting bolts and finger tighten
the nuts.
(3) Remove the supports and lower the vehicle.
(4) Tighten the lower suspension arm nuts to 203
N·m (150 ft. lbs.).
Fig. 1 Upper & Lower Suspension Arms
1 - UPPER SUSPENSION ARM
2 - REAR AXLE
3 - LOWER SUSPENSION ARM
TJ
REAR
2 - 17
REAR (Continued)
SHOCK
DESCRIPTION
The top of the shock absorbers are bolted to the
frame. The bottom of the shocks are bolted to the
axle brackets.
OPERATION
The shock absorbers dampen jounce and rebound
motion of the vehicle over various road conditions
and limit suspension rebound travel.
DIAGNOSIS AND TESTING - SHOCK
ABSORBER
A knocking or rattling noise from a shock absorber
may be caused by movement between mounting
bushings and metal brackets or attaching compo-
nents. These noises can usually be stopped by tight-
ening the attaching nuts. If the noise persists,
inspect for damaged and worn bushings, and attach-
ing components. Repair as necessary if any of these
conditions exist.
A squeaking noise from the shock absorber may be
caused by the hydraulic valving and may be intermit-
tent. This condition is not repairable and the shock
absorber must be replaced.
The shock absorbers are not refillable or adjust-
able. If a malfunction occurs, the shock absorber
must be replaced. To test a shock absorber, hold it in
an upright position and force the piston in and out of
the cylinder four or five times. The action throughout
each stroke should be smooth and even.
The shock absorber bushings do not require any
type of lubrication. Do not attempt to stop bushing
noise by lubricating them. Grease and mineral oil-
base lubricants will deteriorate the bushing.
REMOVAL
(1) Raise and support the vehicle and the axle.
(2) Remove the upper mounting bolts (Fig. 3).
(3) Remove the lower nut and bolt from the axle
bracket. Remove the shock absorber.
INSTALLATION
(1) Install the shock absorber on the upper frame
rail and install mounting bolts.
(2) Tighten the upper bolts to 31 N·m (23 ft. lbs.).
(3) Install lower bolt and nut finger tight.
(4) Remove the supports and lower the vehicle.
(5) Tighten the lower nut to 100 N·m (74 ft. lbs.).
SPRING
DESCRIPTION
The coil springs mount between the bottom of the
frame rail and the top of the axle. A rubber doughnut
isolator is located between the top of the spring and
the frame rail. A plastic isolator is located between
the bottom of the spring and the axle.
OPERATION
The coil springs control ride quality and maintain
proper ride height. The isolators are used to isolate
road noise.
REMOVAL
(1) Raise and support the vehicle. Position a
hydraulic jack under the axle to support it.
(2) Disconnect the stabilizer bar links and shock
absorbers from the axle brackets. (Refer to 2 - SUS-
Fig. 2 Upper & Lower Suspension Arms
1 - FRAME MOUNT
2 - UPPER SUSPENSION ARM
3 - LOWER SUSPENSION ARM
Fig. 3 Shock Absorber
1 - AXLE BRACKET
2 - SHOCK
2 - 18
REAR
TJ
LOWER CONTROL ARM (Continued)
PENSION/REAR/STABILIZER BAR - REMOVAL)
(Refer
to
2
-
SUSPENSION/REAR/SHOCK
-
REMOVAL).
(3) Disconnect the track bar from the frame rail
bracket. (Refer to 2 - SUSPENSION/REAR/TRACK
BAR - REMOVAL).
(4) Lower the axle until the spring is free from the
upper mount seat and remove the spring.
INSTALLATION
NOTE: Springs can be install with either end up.
(1) Position the coil spring on the axle pad isolator.
(2) Raise the axle into position until the spring
seats on the upper isolator.
(3) Connect the stabilizer bar links and shock
absorbers to the axle bracket. Connect the track bar
to the frame rail bracket.
(4) Remove the supports and lower the vehicle.
(5) Tighten the stabilizer bar links, shock absorb-
ers and track bar to specified torque.
STABILIZER BAR
DESCRIPTION
The spring steel bar extends across the axle and
mounts to bracket on the axle. Links are connected
from the bar to the side of the frame rail. The stabi-
lizer bar and links are isolated by rubber bushings.
OPERATION
The stabilizer bar is used to control vehicle body
roll during turns. The bar helps to control the vehicle
body in relationship to the suspension.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the stabilizer bar link bolts from the
frame mounts (Fig. 4).
(3) Remove the link bolts from the stabilizer bar.
(4) Remove the stabilizer bar retainer bolts and
retainers from the axle mounts (Fig. 5) and remove
the bar.
INSTALLATION
(1) Install the stabilizer bar on the axle mounts
and install the retainers and bolts.
NOTE: Ensure the bar is centered with equal spac-
ing on both sides and is positioned above the dif-
ferential housing (Fig. 5).
(2) Tighten the retainer bolts to 54 N·m (40 ft.
lbs.).
(3) Install the links onto the stabilizer bar and
frame mounts. Install the bolts and nuts finger tight.
(4) Remove support and lower vehicle.
(5) Tighten the link nuts/bolts to 54 N·m (40 ft.
lbs.).
Fig. 4 Stabilizer Bar Link
1 - FRAME MOUNT
2 - LINK
3 - STABILIZER BAR
Fig. 5 Stabilizer Bar
1 - LINK
2 - RETAINER
3 - STABILIZER BAR
4 - AXLE MOUNT
TJ
REAR
2 - 19
SPRING (Continued)
TRACK BAR
DESCRIPTION
The bar is attached to a frame rail bracket and
axle bracket. The bar has bushings at both ends.
OPERATION
The track bar is used to control rear axle lateral
movement.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the bolt and nut from the frame rail
bracket (Fig. 6).
(3) Remove the bolt from the axle bracket (Fig. 6)
and remove the track bar.
INSTALLATION
(1) Install the track bar in the axle bracket and
install the bolt loosely.
(2) Install the track bar in the frame rail bracket
and loosely install the bolt and nut.
NOTE: It may be necessary to pry the axle assem-
bly over to install the track bar.
(3) Remove supports and lower the vehicle.
(4) Tighten the track bar nut/bolt at both ends to
100 N·m (74 ft. lbs.).
UPPER CONTROL ARM
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the parking brake cable/bracket and
ABS wiring bracket from the arm if equipped
(Fig. 7).
(3) Remove the upper suspension arm nut and bolt
from the axle bracket (Fig. 1).
(4) Remove the nut and bolt from the frame rail
bracket (Fig. 2)and remove the upper suspension
arm.
INSTALLATION
(1) Position the upper suspension arm in the axle
bracket and frame rail bracket.
(2) Install the bolts and finger tighten the nuts.
(3) Install the parking brake cable/bracket and
ABS wiring bracket on the arm if equipped.
(4) Remove the supports and lower the vehicle.
(5) Tighten the upper suspension arm frame rail
bracket bolt to 75 N·m (55 ft. lbs.).
(6) Tighten the upper suspension arm axle bracket
nut to 75 N·m (55 ft. lbs.).
Fig. 6 Rear Track Bar
1 - TRACK BAR
2 - FRAME BRACKET
3 - REAR AXLE
Fig. 7 Parking Brake Cable/Bracket And Wiring
Bracket
1 - UPPER SUSPENSION ARM
2 - WIRING BRACKET
3 - PARKING BRAKE CABLE BRACKET
2 - 20
REAR
TJ
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