1998 ISUZU TROOPER relay

INSPECTION
Before making any adjustments affecting caster, camber
or toe-in, the following front end inspection should be
made.
INSPECT
1. Tires for proper inflation pressure. Refer to “Wheels
and Tires” in section 3E.
2. Front wheel bearings for proper adjustment. Refer to
“Front Wheel Drive” in section 4C.
3. Ball joints, tie rod ends and relay rods. If excessive
looseness is noted, correct before adjusting. Refer to
“Steering Linkage” in section 2A.
4. Wheel and tires for run-out. Refer to “Wheels and
Tires”in section 3E.
5. Trim height. If not within specifications, the
correction must be made before adjusting caster.
6. Steering gear for looseness at the frame.
7. Shock absorbers for leaks or any noticeable noise.
Refer to “Front Suspension” in section 3C.
8. Control arms or stabilizer bar attachment for
looseness. Refer to “Front Suspension“ in section 3C.
9. Alignment equipment. Follow the manufacturer’s
instructions.
10. Level of the vehicle. The vehicle must be on a level
surface.
TRIM HEIGHT ADJUSTMENT
Adjust the trim height by means of the adjusting bolt on
the height control arms.
CAUTION:
When adjusting front end alignment, be sure to begin
with trim height as trim height adjustment may change
other adjusted alignments.
1. Check and adjust the tire inflation pressures.
2. Park the vehicle on a level ground and move the front
of the vehicle up and down several times to settle the
suspension.
3. Make necessary adjustment with the adjusting bolt
on the height control arms.
Trim Height(Z) mm(in)
139 ± 5 (5.47 ± 0.2)FRONT END ALIGNMENT 2A – 3
ON-VEHICLE SERVICE

6. Tighten the lock nut to the specified torque.
Lock Nut Torque N·m (kg·m/lb·ft)
23 (2.3 / 17) 2A – 6 FRONT END ALIGNMENT
4. Similarly adjust the inside wheel angle of the other
side with stopper bolt.
Maximum Steering Angle
Inside wheel 34°+0°
-2°
Outside wheel 32°
NOTE:
Maximum steering angles should be set after adjusting
front wheel alignment.
5. If the stop between the lower link end and the knuckle
comes ahead of the stopper bolt, adjust the stopper
bolt so that inner stopper bolt touches the drop arm
(relay lever).

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)

STEERING LINKAGE 2A – 49
RELAY LEVER
2
2
3
6
5
4 1 hese steps are based on the LHD model.
Removal Steps
1. Nut and cotter pin
2. Bolt and nut
3. Relay lever and Bracket
4. Nut and washer
5. Relay lever
6. Bracket
Installation Steps
6. Bracket
5. Relay lever
4. Nut and washer
3. Relay lever and bracket
2. Bolt and nut
1. Nut and cotter pin
REMOVAL
Preparation:
Raise the vehicle and support the frame with suitable
safety stands.
1. Nut and Cotter pin
Disconnect relay lever at the center track rod.
Remover: 5-8840-2121-0 (J-36831)
433RW005
These steps are based on the LHD model.