Isuzu KB P190. Manual — part 90

FRONT SUSPENSION 3C-39

Inspection and Repair

Make necessary correction or replace parts if wear,
damage, corrosion or any other abnormal condition is
found through inspection.

Check the following parts:

• Knuckle
• Thrust washer (4×4 Model Only)

Installation

1. Apply appropriate amount of multipurpose type

grease to the new bearing (Approx. 5 g (0.18 oz))

and install needle bearing by using installer 5-

8840-2128-0 and grip 5-8840-0007-0. (4

×4 Model

Only)

(4

×4 Model Only)

901RW275

2. Apply multipurpose type grease to the thrust

washer, and install washer with chamfered side

facing knuckle. (4

×4 Model Only)

3. Use a new oil seal, and apply multipurpose type

grease to the area surrounded by the lip (approx. 2

g (0.07 oz)). Then use installer 5-8840-2851-0 (2)

and grip 5-8840-0007-0 (1) to install oil seal. After

fitting the oil seal to the installer, drive it to the

knuckle using a hammer or bench press until the

tool front face contacts with the thrust washer.

(4

×4 Model Only)

RTW73CSH000101

4. Install knuckle assembly.

5. Install upper ball joint and 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 (10.0 kgf⋅⋅⋅⋅m/72 lb⋅⋅⋅⋅ft)

6. Install lower ball joint and tighten the nut to the

specified torque, with just enough additional torque

to align cotter pin holes. Install new cotter pin.

Torque: 147 N

⋅⋅⋅⋅m (15.0 kgf⋅⋅⋅⋅m/108 lb⋅⋅⋅⋅ft)

7. Install back plate.

8. Install speed sensor harness.

9. Install torsion bar; refer to Torsion Bar in this

section.

NOTE: Adjust the trim height. Refer to Front End
Alignment Inspection and Adjustment in Steering.

3C-40 FRONT SUSPENSION

Upper Control Arm

Upper Control Arm and Associated Parts

RTW440LF001301

Legend

(1) Bolt and Plate

(2) Camber Shims

(3) Caster Shims

(4) Nut Assembly

(5) Upper Control Arm Assembly

(6) Fulcrum Pin

(7)

Bushing

(8)

Plate

(9) Upper Control Arm Nut

(10) Speed Sensor harness

(11) Nut and Cotter Pin

(12) Upper Ball Joint, Bolt and Nut

Removal

1. Raise the vehicle and support the frame with

suitable safety stands.

2. Remove wheel and tire assembly. Refer to Wheel

in this section.

3. Remove the brake caliper and disconnect brake

pipe. Refer to Disc Brakes in Brake section.

FRONT SUSPENSION 3C-41

4. Support lower control arm with a harness.

5. Remove speed sensor harness.

6. Remove nut and cotter pin then remove knuckle

using remover 5-8840-2121-0.

CAUTION: Be careful not to damage the ball joint
boot.

RTW340SH000401

7. Remove upper ball joint.

8. Remove bolt and plate.

9. Remove nut assembly.

10. Remove camber shims and note the positions and

number of shims.

11. Remove caster shims and note the positions and

number of shims.

12. Remove upper control arm assembly.

13. Remove upper control arm nut.

14. Remove plate.

15. Remove bushing by using remover 5-8840-0256-0.

RTW340SH000501

RTW340SH000601

16. Remove fulcrum pin.

Inspection and Repair

Make necessary parts replacement if wear, damage,
corrosion or any other abnormal conditions are found
through inspection.

Check the following parts:

• Upper control arm
• Bushing
• Fulcrum pin

3C-42 FRONT SUSPENSION

Installation

1. Install fulcrum pin.

2. Install bushing by using installer 5-8840-0256-0

and 5-8840-2307-0.

RTW340SH000701

RTW340SH000801

3. Install upper ball joint and tighten it to the specified

torque.

Torque: 57 N

⋅⋅⋅⋅m (5.8 kgf⋅⋅⋅⋅m/42 lb⋅⋅⋅⋅ft)

4. 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 (10.0 kgf⋅⋅⋅⋅m/72 lb⋅⋅⋅⋅ft)

5. Install plate.

6. Install upper control arm nut and tighten fulcrum

pin nut finger-tight.

NOTE: Apply oil to the thread.

NOTE: Tighten the nut with the parts in the position
shown in the illustration below.

Buffer clearance: 29.7 mm (1.17 in)

Torque: 108 N

⋅⋅⋅⋅m (11.0 kgf⋅⋅⋅⋅m/80 lb⋅⋅⋅⋅ft)

RTW53ASH000301

7. Install upper control arm assembly with the fulcrum

pin projections turned inward.

RTW53CSH000101-X

8. Install the caster shims (b) between the chassis

frame and fulcrum pin.