height adjustment ISUZU TF SERIES 2004 User Guide

3A-12 FRONT ALIGNMENT




Toe-in Adjustment
Measurement should be taken with the vehicle on a surface
plate.
If a surface plate is not available, toe-in should be checked
with the vehicle parked on a level floor.
1. Set front wheels to straight ahead position.
2. Align the toe-in gauge with center height of each wheel a
t
front end.
3.
Apply center marks to each wheel, then take measurement
of distance A between the center marks on each wheel.
4. Slowly move the vehicle rearward until the center marks
reach the rear end position.
5. Take measurement of distance B between the cente
r
marks at rear end.
The toe-in can be calculated with next formula.
Toe-in = B - A
Toe-in mm (in)

4
2 (High ride suspension)
4
4 02 (00.08)






To adjust the toe-in angle, loosen the lock nuts (2) on the tie
rod (1) and turn the tie rod. Turn both rods the same amount,
to keep the steering wheel centered.
Lock Nut Torque N
m (kgf
m/lb
ft)
986.0 (10.00.6 / 72.34.3)

RTW330SH000201

Trim Height
Trim Height : at Curb Weight
Trim height (Z) = A - B
mm (in)

Z
140
5 (5.51)

FRONT ALIGNMENT 3A-13


450R100002-X

FRT Buffer clearance (Reference Data)

4
2 (High ride suspension), 4
4
29.7(1.17)

Adjustment
Adjust the trim height by means of the adjusting bolt on the
height control arms.
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.

410RS001

3. Make necessary adjustment with the adjusting bolt on the
height control arms.



RTW340SH000201-X

RR Buffer clearance (Reference Data) mm(in)

4

2 (High ride suspension), 4

4
80.0 (3.15)

FRONT SUSPENSION 3C-11

NOTE: Paint mark to be outer side of after assembly to
vehicle.
2. Install nut (2), then tighten it to the specified
torque.
Torque: 55N





m (5.6kg





m/41lb ft)
3. Install bolt (7) and nut (4), then tighten to the
specified torque.
Buffer clearance: 25.9 mm (1.02 in)
Torque: 137N




m (14.0kg




m/101 lb ft)


NOTE: Apply oil to the thread.
NOTE: Tighten the bolt and nut with the parts in the
position shown in the illustration below.




RTW340SH001301-X
4. Install nut (6), then tighten it to the specified
torque.
Torque: 50N




m (5.1kg




m/37 lb ft)
5. Tighten the cam bolt (8) and nut (3), it to the
interim torque, then turn the cam bolt to the setting
mark applied during disassembly.
6. Install ball joint nut, then tighten it to the specified
torque with just enough additional torque to align
cotter pin holes. Install new cotter pin (5).
Torque: 147N




m (15.0kg




m/108 lb ft)


NOTE: Check the trim height. Refer to Front Alignment
Inspection and Adjustment.

7. Nut (3) tighten it to the specified torque.
Buffer clearance: 25.9 mm (1.02 in)
Torque: 186N




m (19.0kg




m/137 lb ft)


NOTE: Apply oil to the thread.
NOTE: Tighten the bolt and nut with the parts in the
position shown in the illustration below.





RTW340SH001301-X
8. Install wheel and tire assembly. Refer to wheel in
this section.

3C-36 FRONT SUSPENSION


Rubber seat


2.
Apply grease to the portion that fits into the bracket
then install height control arm and align the setting
marks (2).





410RS005
3. Apply grease to the bolt portion of the end piece
(4). Apply grease to the portion of the seat (5) that
fits into the bracket.





410RS008

4. Apply grease to the serrated portions.
5. Install adjust bolt and seat, then turn the adjust bolt
to the setting mark (1) applied during disassembly.
NOTE: Adjust the trim height. Refer to Front End
Alignment Inspection and Adjustment in Steering
section.






410RS004

FRONT SUSPENSION 3C-39

Inspection and Repair
Make necessary correction or parts replacement if
wear, damage, corrosion or any other abnormal
condition are found through inspection.
Check the following parts:


Knuckle


Knuckle arm

Thrust washer (44 Model Only)
Installation
1. Apply appropriate amount of multipurpose type
grease to the new bearing (Approx. 5 g) 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. (44 Model Only)

3. Use a new oil seal, and apply multipurpose type
grease to the area surrounded by the lip (approx. 2
g). Then use installer 5-8840-2127-0 and grip 5-
8840-0007-0 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)




(4
4 Model Only)
901RW274
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 (9).
Torque: 98 N




m (10.0kg




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 (2).
Torque: 147 N





m (15.0kg





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.

FRONT SUSPENSION 3C-47

14. Install cam plate and nut then tighten lower link nut
finger-tight.
NOTE: Apply oil to the thread.
NOTE: Tighten the nut (3) or bolt with the parts in the
position shown in the illustration below.
Buffer clearance: 29.7 mm (1.17 in)
Torque: 186 N




m (19.0kg




m/137 lb ft)
NOTE: Adjust the trim height. Refer to Front En
d
Alignment Inspection and Adjustment in Steering
section.



450R100002

FRONT SUSPENSION 3C-55
2. VEHICLE PULLS TO RIGHT OR LEFT

Checkpoint Trouble Cause Countermeasure



Steering linkage, and upper
and lower link


Rubber bushing for upper and
lower link


Wheel alignment


Vehicle trim height


Replace


Replace


Adjust


Adjust


Deformed


Worn


Incorrect


Incorrect


Brake adjustment (binding)

Adjust


Replace


Incorrect

Collapsed or break (4

2
Except high ride suspension)
Collapsed or twisted (4

4, 4

2
High ride suspension)
Continued on the next pageOK OK OK OK
NG NG NG NG NG NG
OK OK Coil spring (4
2 Except high
ride suspension)
Torsion bar (4

4, 4

2 High
ride suspension)

Front wheel bearing

Adjust or replace

Incorrect adjustment or
abrasion
NG