Isuzu Trooper (2000 year). Service manual — part 64
3C 21
FRONT SUSPENSION
13. Install rear nut and washer and tighten lower link nut
finger–tight.
NOTE: Torque lower control arm nut after adjusting buffer
clearance.
Buffer clearance: 20 mm (0.79 in)
Torque: 196 N·m (145 lb ft)
450RS012
14. Install front nut and washer then tighten lower link nut
finger-tight.
NOTE: Torque lower control arm nut after adjusting buffer
clearance .
Buffer clearance: 20 mm (0.79 in)
Torque: 157 N·m (116 lb ft)
NOTE: Adjust the trim height. Refer to Front End
Alignment Inspection and Adjustment in Steering section.
450RS012
3C 22
FRONT SUSPENSION
Upper Ball Joint
Upper Ball Joint and Associated Parts
450RS022
Legend
(1) Bolt, Nut and Washer
(2) Upper Ball Joint
(3) Nut and Cotter Pin
Removal
1. Raise the vehicle and support the frame with suitable
safety stands.
2. Remove the speed sensor from the knuckle.
3C 23
FRONT SUSPENSION
3. Remove upper ball joint nut and cotter pin, then use
remover J–36831 to remove the upper ball joint from
the knuckle.
CAUTION: Be careful not to break the ball joint boot.
901RW043
4. Remove bolt and washer.
5. Remove upper ball joint.
Inspection and Repair
Make necessary parts replacement if wear, damage,
corrosion or any other abnormal conditions are found
through inspection.
D
Inspect the lower end boot for damage or grease leak.
Move the ball joint as shown in the figure to confirm its
normal movement.
D
Inspect screw/taper area of ball for damage.
D
If any defects are found by the above inspections,
replace the ball joint assembly with new one.
450RS023
D
After moving the ball joint 4 or 5 times, attach nut then
measure the preload.
Starting torque: 0.5 –3.2 N·m (0.4–2.4 lb ft)
450RS024
If the above limits specified are exceeded, replace the ball
joint assembly.
Installation
1. Install upper ball joint.
2. Install bolt and nut, then tighten them to the specified
torque.
Torque: 57 N·m (42 lb ft)
3. Install nut and cotter pin, then tighten the nut to the
specified torque with just enough additional torque to
align cotter pin holes. Install new cotter pin.
Torque: 98 N·m (72 lb ft)
3C 24
FRONT SUSPENSION
Lower Ball Joint
Lower Ball Joint and Associated Parts
450RS025
Legend
(1) Bolt
(2) Lower Ball Joint
(3) Nut
(4) Nut and Cotter Pin
Removal
1. Raise the vehicle and support the frame with suitable
safety stands.
2. Remove wheel and tire assembly. Refer to Wheel
Replacement in this section.
3. Remove the outer track rod from the knuckle. Refer to
Steering Linkage in Steering section.
4. Remove the retaining ring from the front axle driving
shaft to release the shaft from hub. Refer to Front Hub
and Disc in Driveline/Axle section.
5. Support lower control arm with a jack.
6. Remove lower ball joint nut and cotter pin, then use
remover J–29107 to remove the lower ball joint from
the knuckle.
CAUTION: Be careful not to damage the ball joint
boot.
901RW042
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