ISUZU TROOPER 1998 Service Repair Manual

POWER STEERING 2A – 39
7. Spring
6. Valve
5. O-ring
Be sure to discard used parts, and always used new
parts for installation.
4. Connector
Connector Torque N·m (kg·m/lb·ft)
59 (6.0 / 43)
3. O-ring
Be sure to discard used parts, and always used new
parts for installation.
2. Pipe, Suction
Suction Pipe Bolt Torque N·m (kg·m/lb·ft)
9.8 (1.0 / 7.1)
1. O-ring
Be sure to discard used parts, and always used new
parts for installation.

2A – 40 POWER STEERING
MEMO

STEERING LINKAGE 2A – 41
SECTION 2A
STEERING LINKAGE
CONTENTS
PAGE
General Description ......................................................................................................... 2A – 42
On-Vehicle Service ........................................................................................................... 2A – 43
Center Track Rod Assembly........................................................................................ 2A – 43
Outer Track Rod Assembly ......................................................................................... 2A – 46
Relay Lever ................................................................................................................... 2A – 49

2A – 42 STEERING LINKAGE
GENERAL DESCRIPTION
Center track rod assembly
Rod end, outerTrack rodRod end, inner
Relay lever These steps are based on the LHD model.
Outer track rod assembly
Pitman arm
The steering linkage consists of a pitman arm,
relay lever, center track rod and two adjustable
outer track rods.
When the steering wheel is turned, the gear rotates
the pitman arm which forces the center track rod to
one side. The outer track rods, connected to the
center track rod by ball studs, transfer the steering
force to the wheels. The outer track rods are
adjustable and are used for toe-in adjustments.
The center track rod is supported by the pitman
arm and relay lever. The relaylever pivots on a
support attached to the frame.The overall condition of the steering linkage affects
steering performance. If parts are bent, damaged,
worn or poorly lubricated, improper and possibly
dangerous steering action will result.
Whenever any steering linkage components are
repaired or replaced, check the steering geometry
and front end alignment. Refer to Front End
Alignment (Sec. 3A).
433RW004
This illustration is based on the LHD model.

STEERING LINKAGE 2A – 43
ON-VEHICLED SERVICE
CENTER TRACK ROD ASSEMBLY
Removal Steps
1. Nut and cotter pin
2. Nut and cotter pin, pitman arm
3. Nut and cotter pin relay lever
4. Center track rod assembly
Installation Steps
4. Center track rod assembly
3. Nut and cotter pin relay lever
2. Nut and cotter pin, pitman arm
1. Nut and cotter pin These steps are based on the LHD model.

2A – 44 STEERING LINKAGE
REMOVAL
Preparation:
Raise the vehicle and support the frame with suitable
safety stands.
1. Nut and Cotter Pin
Disconnect outer track rod assembly from the center
track rod.
Remover: 5-8840-2121-0 (J-36831)
CAUTION:
Be careful not to break the ball joint boot.
2. Nut and Cotter Pin, Pitman Arm
Remove pitman arm from the center track rod (Fig.
3B3-4)
Remover: 5-8840-2121-0 (J-36831)
CAUTION:
Be careful not to break the ball joint boot.
3. Nut and Cotter Pin, Relay Lever
Remove relay lever from the center track rod.
Remover: 5-8840-2121-0 (J-36831)
CAUTION:
Be careful not to break the ball joint boot.
4. Center Track Rod Assembly
INSPECTION AND REPAIR
Make necessary correction or parts replacement if wear,
damage, corrosion, bending, deteriorations or any other
abnormal condition are found through inspection.
Check the following parts.
•Ball joint (Boot, screws and tapered surfaces)

STEERING LINKAGE 2A – 45
INSTALLATION
4. Center Track Rod Assembly
3. Nut and Cotter Pin, Relay Lever
Tighten the nut to the specified torque, with just
enough additional torque to align cotter pin holes.
Install new cotter pin.
Relay Lever Nut Torque N·m (kg·m/lb·ft)
59 (6.0 / 43)
2. Nut and Cotter Pin, Pitman Arm
Tighten the nut to the specified torque, with just
enough additional torque to align cotter pin hole.
Install new cotter pin.
Pitman Arm Nut Torque N·m (kg·m/lb·ft)
98 (10.0 / 72)
1. Nut and Cotter Pins
Tighten the nut to the specified torque, with just
enough additional torque to align cotter pin holes.
Install new cotter pin.
Center Track Rod Nut Torque N·m (kg·m/lb·ft)
98 (10.0 / 72)

2A – 46 STEERING LINKAGE
OUTER TRACK ROD ASSEMBLY
Removal Steps
1. Nut and cotter pin, center track rod
2. Nut and cotter pin, knuckle arm
3. Lock nut, outer
4. Rod end assembly outer
5. Lock nut, inner
6. Rod end assembly, inner
The screw is threaded
counterclockwise.
Installation Steps
6. Rod end assembly, inner
5. Lock nut, inner
4. Rod end assembly outer
3. Lock nut, outer
2. Nut and cotter pin, knuckle arm
1. Nut and cotter pin, center track
rod These steps are based on the LHD model.

STEERING LINKAGE 2A – 47
REMOVAL
Preparation:
Remove wheel and tire assembly.
Refer to “Wheels and Tires” in section 3E.
1. Nut and Cotter Pin, Center Track Rod
Disconnect outer track rod assembly at the center
track rod.
Remover: 5-8840-2121-0 (J-36831)
CAUTION:
Be careful not to break the ball joint boot.
2. Nut and Cotter Pin, Knuckle Arm
Remove outer track rod assembly from the knuckle
arm.
Remover: 5-8840-2121-0 (J-36831)
CAUTION:
Be careful not to break the ball joint boot.
3. Lock Nut, Outer
NOTE:
In either outer rod, the screw on the right side of the
vehicle is threaded counterclockwise.
6. Rod End, Inner
Apply setting marks to ensure reassembly of the
parts in their original position.
4. Rod End Assembly, Outer
Apply setting marks to ensure reassembly of the
parts in their original position.
5. Lock Nut, Inner
NOTE:
In either outer rod, the screw on the right side of the
vehicle is threaded counterclockwise.

2A – 48 STEERING LINKAGE
INSPECTION AND REPAIR
Make necessary correction or parts replacement if wear,
damage, corrosion, bending, deteriorations or any other
abnormal condition are found through inspection.
Check the following parts.
•Rod end assembly
•Ball joint (Boot, screws and tapered surfaces)
INSTALLATION
6. Rod End, Inner
Align the setting marks applied during desassembly.
5. Lock Nut, Inner
Lock Nut Torque N·m (kg·m/lb·ft)
118 (12.0 / 87)
NOTE:
In either outer rod, the screw on the right side of the
vehicle is threaded counterclockwise.
4. Rod End Assembly, Outer
Align the setting marks applied during disassembly.
3 Lock Nut, Outer
Lock Nut Torque N·m (kg·m/lb·ft)
118 (12.0 / 87)
2. Nut and Cotter pin, Knuckle Arm
Tighten the nut to the specified torque, with just
enough additional torque to align cotter pin holes.
Install new cotter pin.
Knuckle Arm Nut Torque N·m (kg·m/lb·ft)
98 (10.0 / 72)
1. Nut and Cotter Pin, Center Track Rod
Tighten the nut to the specified torque, with just
enough additional torque to align cotter pin holes.
Install new cotter pin.
Track Rod Nut Torque N·m (kg·m/lb·ft)
98 (10.0 / 72)
NOTE:
If replacing the track rod, adjust the new track rod
length.
Rod Length (L) mm (in)
328.3 (12.93) : Wide Tread
299 (11.77) : Narrow Tread
NOTE:
Adjust the toe-in. Refer to “Front End Alignment” in
section 3A.