
CAUTION: Wheel bearing damage will result if after
loosening hub nut, vehicle is rolled on the ground
or the weight of the vehicle is allowed to be sup-
ported by the tires.
(5) With the vehicle's brakes applied to keep hub
from turning,loosen and removethe stub axle to
hub nut.
(6) Remove the 2 front disc brake caliper to steer-
ing knuckle attaching bolts (Fig. 13).
(7) Remove the disc brake caliper from the steer-
ing knuckle. Caliper is removed by first rotating top
of caliper away from steering knuckle and then
removing bottom of caliper out from under machined
abutment on steering knuckle (Fig. 14).
(8) Support disc brake caliper assembly by using a
wire hook and suspending it from the strut assembly
(Fig. 15).Do not allow the brake caliper assem-
bly to hang by the brake flex hose.
Fig. 11 Hub/Bearing To Stub Axle Retaining Nut
Fig. 12 Wave Washer
Fig. 13 Front Disc Brake Caliper Attaching Bolts
Fig. 14 Brake Caliper Mounting To Steering Knuckle
Fig. 15 Correctly Supported Disc Brake Caliper
NSSUSPENSION 2 - 15
REMOVAL AND INSTALLATION (Continued)

suspension cradle (Fig. 36).Do not tighten or
torque pivot bolt at this time.
(2) Install retainer (Fig. 37) attaching rear bush-
ing of lower control arm to front suspension cradle.
When installing retainer, be sure raised rib on
rear bushing (Fig. 37) is positioned in the
groove on the retainer. Do not torque attaching
bolts at this time.
NOTE: If reference marks were not put on the
frame rails prior to lowering the suspension cradle,
Refer to group 13 Frame And Bumpers for the cra-
dle positioning procedure.
(3) Raise the front suspension cradle against the
front frame rails. Align the cradle with the reference
marks on the frame rails.
(4) Tighten the 4 mounting bolts for the front sus-
pension cradle to a torque of 163 N´m (120 ft. lbs.).(5) Install lower control arm ball joint stud into
steering knuckle. Then install the bolt and nut,
clamping the steering knuckle to the ball joint stud
(Fig. 29). Tighten the clamping bolt to a torque of
145 N´m (105 ft. lbs.).
(6) Install the cradle plate on front suspension cra-
dle and then install the 10 cradle plate to cradle
attaching bolts (Fig. 30). Tighten the 9 M-14 attach-
ing bolts (Fig. 30) to a torque of 165 N´m (123 ft.
lbs.). Tighten the 1 M-12 attaching bolt (Fig. 30) to a
torque of 108 N´m (80 ft. lbs.).
CAUTION: When locating jack stands under lower
control arm, do not place the jack stands under the
ball joints (Fig. 38).
(7) Position jack stands under the lower control
arms as close to the ball joints as possible (Fig. 38).
Lower the vehicle onto the jack stands, until the jack
stands are supporting the total weight of the vehicle
(Fig. 38).
(8) Tighten front lower control arm pivot bolt (Fig.
36) to a torque of 183 N´m (135 ft. lbs.) first, then
tighten rear lower control arm bushing retainer
attaching bolts (Fig. 33) to a torque of 68 N´m (50 ft.
lbs.).
(9) Install the wheel/tire assembly on the vehicle.
(10) Install and tighten the wheel mounting stud
nuts in proper sequence until all nuts are torqued to
half specification. Then repeat the tightening
sequence to the full specified torque of 135 N´m (100
ft. lbs.).
(11) Remove jack stands and lower vehicle to the
ground.
Fig. 36 Lower Control Arm Bushing Pivot Bolt
Correctly Installed
Fig. 37 Installing Lower Control Arm Rear Bushing
Retainer
Fig. 38 Jack Stands Supporting Vehicle Weight
NSSUSPENSION 2 - 21
REMOVAL AND INSTALLATION (Continued)

CAUTION: Wheel bearing damage will result if
after loosening hub nut, vehicle is rolled on the
ground or the weight of the vehicle is allowed to be
supported by the tires.
(3) With the aid of a helper applying the brakes to
keep the front hub from turning,loosen but do not
removethe hub nut.The hub and driveshaft are
splined together through the knuckle (bearing)
and retained by the hub nut.
(4) Raise vehicle on jack stands or centered on a
frame contact type hoist. See Hoisting in the Lubri-
cation and Maintenance section of this manual, for
the required lifting procedure to be used for this
vehicle.
(5) Remove wheel lug nuts, and front tire and
wheel assembly.
(6) Remove front disc brake caliper to steering
knuckle attaching bolts. (Fig. 54).
(7) Remove disc brake caliper assembly from steer-
ing knuckle. Caliper is removed by first rotating top
of caliper away from steering knuckle, and then
removing bottom of caliper out from under machined
abutment. (Fig. 55)
(8) Support disc brake caliper assembly using a
wire hook, (Fig. 56)do not hang caliper assembly
by hydraulic hose.
(9) Remove the braking disc from the front hub/
bearing assembly.
(10) Remove the retaining nut and the washer
(Fig. 57) from the end of the stub axle.
(11) Remove the four hub and bearing assembly
mounting bolts from the rear of steering knuckle
(Fig. 58).
(12) Remove the hub and bearing assembly from
the steering knuckle (Fig. 59).
Fig. 54 Front Disc Brake Caliper Mounting Bolts
Fig. 55 Brake Caliper Assembly Removal/Installation
Fig. 56 Supporting Brake Caliper
Fig. 57 Hub/Bearing To Stub Axle Retaining Nut And
Washer
2 - 26 SUSPENSIONNS
REMOVAL AND INSTALLATION (Continued)

NOTE: If shock absorber bolt deflects upward dur-
ing removal, raise axle by adjusting support jack. If
shock absorber bolt deflects downward during
removal, lower axle by adjusting support jack (or by
pulling on axle).
(4) Using 2 jack stands positioned under the outer
ends of the axle, raise the axle enough to remove the
weight of the axle from the rear springs.
(5) Loosen and remove the axle plate bolts from
the rear axle (Fig. 6).
(6) Remove the axle plate from the rear axle and
the leaf spring (Fig. 7).
(7) Using the jack standsslowlylower the rear
axle, permitting the rear springs to hang free.
(8) Loosen and remove the 4 bolts (Fig. 8) from the
front mount of the leaf spring.
(9) Loosen and remove the nuts from the spring
hanger (Fig. 9) for the rear leaf spring. Then remove
the hanger plate from the hanger and remove the
spring from the spring hanger (Fig. 9).
Fig. 5 Rear Shock Mounting Bolt
Fig. 6 Axle Plate Bolts
Fig. 7 Axle Plate
Fig. 8 Leaf Spring Front Mount
Fig. 9 Rear Spring Hanger
NSSUSPENSION 2 - 41
REMOVAL AND INSTALLATION (Continued)

(10) Remove the leaf spring from the vehicle (Fig.
10).
(11) Loosen and remove the pivot bolt from the
front mount of the rear leaf spring. (Fig. 11).
FRONT BUSHING REPLACEMENT
(1) Install leaf spring in a proper holding fixture.
(2) Install leaf spring press Special Tool C-4212±F.
(3) Install adapter Special Tool C-4212±3.
(4) Tighten leaf spring press until bushing is
extracted from leaf spring.
(5) Remove leaf spring press from leaf spring.
(6) Insert replacement bushing into the leaf spring
eye.Verify that the bushing flange is on the left
side of the leaf spring when leaf spring is in the
in vehicle installed position.
(7) Install leaf spring press Special Tool C-4212±F.
(8) Install adapter Special Tool C-4212±4.
(9) Tighten leaf spring press until bushing flange
bottoms solidly against leaf spring eye.
(10) Remove leaf spring press and adapter.(11) Bend the bushing tabs so that they are con-
tacting the leaf spring.
INSTALLATION
(1) Assemble front spring mount to front of spring
eye and install pivot bolt and nut. Do not tighten.
CAUTION: Pivot bolt must face inboard to prevent
structural damage during installation of spring.
(2) Raise front of spring and install four hanger
bolts, tighten to 61 N´m (45 ft. lbs.) torque.
(3) Install rear of spring onto rear spring shackle.
Install shackle plate. Do not tighten.
(4) Verify lower leaf spring isolator is in position.
(5) Raise axle into correct position on leaf spring
with axle centered under spring locator post (Fig.
12).
(6) Verify that the leaf spring isolator is correctly
positioned in the axle plate.
(7) Install axle plate on the spring.
(8) Install axle plate bolts. Tighten bolts to 108
N´m (80 ft. lbs.) torque.
(9) Install shock absorber bolts. Do not tighten.
(10) Lower vehicle to floor so that the full weight
of vehicle is supported by the tires.
(11) Tighten component fasteners as follows:
²Front pivot boltÐ156 N´m (115 ft. lbs.)
²Shackle nutsÐ61 N´m (45 ft. lbs.)
²Shock absorber boltsÐ101 N´m (75 ft. lbs.)
(12) If the vehicle is not equipped with antilock
brakes, raise vehicle and the connect the actuator for
the height sensing proportioning valve on the rear
leaf spring. Adjust the height sensing proportioning
valve. Refer to the Adjustment Section in this group
of the service manual for the required adjustment
procedure.
Fig. 10 Leaf Spring Remove/Install
Fig. 11 Leaf Spring Front Mount
Fig. 12 Leaf Spring Locator Post
2 - 42 SUSPENSIONNS
REMOVAL AND INSTALLATION (Continued)

REAR SPRINGS (AWD)
REMOVE
(1) Raise vehicle on frame contact hoist to a com-
fortable working position.
(2) Remove the driveshaft from the side of the
vehicle that requires the removal of the leaf spring.
Refer to Group 3 Driveline in this service manual for
the procedure covering the removal of the rear drive-
shafts.
(3) Support axle with a jack stand. Pad should just
contact axle.
NOTE: If shock absorber bolt deflects upward dur-
ing removal, raise axle by adjusting support jack. If
shock absorber bolt deflects downward during
removal, lower axle by adjusting support jack (or by
pulling on axle).
(4) Begin removal of the shock absorber lower
mounting bolt (Fig. 13).
(5) Using 2 jack stands positioned under the outer
ends of the axle, raise the axle enough to remove the
weight of the axle from the rear springs.
(6) Loosen and remove the axle plate bolts from
the rear axle (Fig. 14).
(7) Using the jack standsslowlylower the rear
axle, permitting the rear springs to hang free.
(8) Loosen and remove the 4 bolts (Fig. 15) at the
front mount of the rear leaf spring.
(9) Loosen and remove the 2 bolts and the 2 nuts
from the spring hanger (Fig. 16) for the rear leaf
spring. Then remove the inner half of the spring
hanger from the outer half hanger of the spring
hanger and the spring. (Fig. 16).
(10) Remove the rear leaf spring from the outer
half of the spring hanger
Fig. 13 Rear Shock Absorber Mounting Bolt
Fig. 14 Axle Plate Bolts
Fig. 15 Leaf Spring Front Mount
Fig. 16 Rear Spring Hanger
NSSUSPENSION 2 - 43
REMOVAL AND INSTALLATION (Continued)

(11) Remove the leaf spring from the vehicle (Fig.
17).
(12) Loosen and remove the pivot bolt from the
front mount of the rear leaf spring. (Fig. 18).
FRONT BUSHING REPLACEMENT
(1) Install leaf spring in a proper holding fixture.
(2) Install leaf spring press Special Tool C-4212±F.
(3) Install adapter Special Tool C-4212±3.
(4) Tighten leaf spring press until bushing is
extracted from leaf spring.
(5) Remove leaf spring press from leaf spring.
(6) Insert replacement bushing into the leaf spring
eye. Verify that the bushing flange is on the outboard
side of the leaf spring.
(7) Install leaf spring press Special Tool C-4212±F.
(8) Install adapter Special Tool C-4212±4.
(9) Tighten leaf spring press until bushing flange
bottoms solidly against leaf spring eye.
(10) Remove leaf spring press and adapter.(11) Bend the tabs on the bushing until they are
contacting the leaf spring.
INSTALL
CAUTION: Pivot bolt must face inboard to prevent
structural damage during installation of spring.
(1) Install the front of the rear leaf spring into the
spring mount (Fig. 18). Install the pivot bolt and nut.
Do not tighten the pivot bolt at this time.
(2) Position the front spring mount for the rear
leaf spring against the floor pan of the vehicle.
Install the 4 mounting bolts for the spring mount.
Tighten the 4 mounting bolts to a torque of 61 N´m
(45 ft. lbs.).
(3) Install the rear of the leaf spring onto the outer
half of the rear hanger. Install the inner half of the
rear hanger. Install the nut and bolts on the rear
hangerbut do not tighten at this time.
(4) Raise axle assembly into correct position with
axle centered under spring locator post.
(5) Install axle plate bolts. Tighten bolts to 108
N´m (80 ft. lbs.) torque.
(6) Install shock absorber bolts. Do not tighten.
(7) Lower vehicle to floor and with full weight of
vehicle on wheels. Tighten component fasteners as
follows:
CAUTION: The following sequence must be fol-
lowed when tightening the pin nuts on the rear
hanger for the rear leaf spring. First the hanger pin
nuts must be tightened to the specified torque
shown below. Then tighten the retaining bolts for
the inner to outer half of the spring hanger to the
torque specification listed below. This sequence
must be followed to properly seat the bushings into
the springs and to avoid bending the spring hanger.
²Front pivot bolt-156 N´m (115 ft. lbs.)
²Rear spring hanger pin nuts-61 N´m (45 ft. lbs.)
²Rear spring hanger inner to outer half retaining
bolts-61 N´m (45 ft. lbs.)
²Shock absorber upper mounting bolt-115 N´m
(85 ft. lbs.)
²Shock absorber lower mounting bolt-108 N´m (80
ft. lbs.)
(8) If the vehicle is not equipped with antilock
brakes, raise vehicle and connect the actuator for the
height sensing proportioning valve on the rear leaf
spring. Adjust the height sensing proportioning
valve. Refer to the Adjustment Section in this group
of the service manual for the required adjustment
procedure.
Fig. 17 Leaf Spring Remove/Install
Fig. 18 Leaf Spring Front Mount
2 - 44 SUSPENSIONNS
REMOVAL AND INSTALLATION (Continued)

SHOCK ABSORBER
REMOVE/INSTALL
(1) Raise vehicle. Vehicle is to be raised and sup-
ported on jackstands or on a frame contact type
hoist. See Hoisting in the Lubrication And Mainte-
nance section of this service manual.
(2) Support the rear axle of the vehicle using 2
jackstands positioned at the outer ends of the axle.
NOTE: If the shock absorber lower mounting bolt
deflects upward during removal, raise axle by
adjusting the support jack. If the lower shock
absorber bolt deflects downward during removal,
lower the axle by adjusting the support jack.
(3) Remove the shock absorber lower mounting
bolt.
(4) While holding shock absorber, remove the
shock absorber upper mounting bolt.
(5) To install the shock absorber use the reverse
sequence of its removal.
(6) Lower the vehicle to the ground so the full
weight of the vehicle is supported by the suspension.
(7) Tighten the upper and lower shock absorber
mounting bolt to their specified torques.
REAR TRACK BAR
REMOVE
(1) Remove the nut and bolt mounting the track
bar to the rear axle (Fig. 19).
(2) Remove the nut and bolt attaching the track
bar to the track bar mount on the body of the vehicle.
Remove the track bar from the track bar mount.
INSTALL
(1) Install the track bar first into the body mount
for the track bar (Fig. 20). Install the track bar boltwith the head of the bolt facing toward the rear of
the vehicle (Fig. 21). Do not tighten.
(2) Install the track bar into its mounting bracket
on the rear axle (Fig. 19). Install the track bar bolt
with the head of the bolt facing toward the rear of
the vehicle. Do not tighten.
(3) Lower the vehicle to the ground until the full
weight of the vehicle is supported by the wheels.
Tighten both track bar attaching bolts to a torque of
95 N´m (70 ft. lbs.).
TRACK BAR MOUNT
REMOVE
(1) Remove the track bar from the track bar
mount.
(2) Remove the three bolts attaching the track bar
mount to the body (Fig. 22).
Fig. 19 Track Bar Mounting To Axle
Fig. 20 Track Bar Installation
Fig. 21 Track Bar Bolt Installation
NSSUSPENSION 2 - 45
REMOVAL AND INSTALLATION (Continued)