2004 ISUZU TF SERIES steering wheel adjustment

3B-28 POWER-ASSISTED STEERING SYSTEM

Inspection and Repair
Make all necessary adjustments, repairs, and part
replacements if wear, damage, or other problems are
discovered during inspection.

Rotor
442RS002
Check that the groove in the vane is free from excessive
wear and that the vane slides smoothly. When par
t
replacement becomes necessary, the pump cartridge
should be replaced as a subassembly.

Vane
442RS003
Sliding faces of the vane should be free from wear.
(Particularly the curved face at the tip that contact with
the cam should be free from wear and distortion). When
part replacement becomes necessary, the pump
cartridge should be replaced as a subassembly.

Cam
The inner face of the arm should have a uniform contact
pattern without a sign of step wear. When part
replacement becomes necessary, the pump cartridge
should be replaced as a subassembly.

Side Plate
The sliding faces of parts must be free from step wear
(more than 0.01 mm), which can be felt by the finge
r
nail.
The parts with minor scores may be reused after lapping
the face.

Relief Valve
The sliding face of the valve must be free from burrs
and damage. The parts with minor scores may be
reused after smoothing with emery cloth (#800 or finer).

Shaft
Oil seal sliding faces must be free from a step wear
which can be felt by the finger nail. Bushing fitting face
must be free from damage and wear.

O-ring, Oil Seal, Snap Ring
Be sure to discard used parts, and always use new
parts for installation. Prior to installation, lubricate all
seals and rings with power steering fluid.

Pressure Switch
Check the switch operation as follows:
With engine idling and A/C on, turn the steering wheel
fully to the left; compressor should interrupt and engine
idle speed will increase. Shut off A/C and again turn
steering fully to the left; engine idle will increase. I
f
system fails to function properly, disconnect connecto
r
at the pressure switch and repeat system check while
testing continuity across disconnected SW connector.

Reassembly
1. Install oil seal to front housing. Be sure to discard
used oil seal, and always use new parts fo
r
installation.
CAUTION: When installing the oil seal, be careful
not to damage the oil seal contacting surface of the
housing.
2. Install shaft assembly.

3B-40 POWER-ASSISTED STEERING SYSTEM



430RX005-X
14. Remove steering column cover.
15. Disconnect the wiring harness connectors located
under the steering column then remove combination
switch and SRS coil assembly.

Installation
1. Align the setting marks made when removing then
install steering wheel.
Refer to the adjustment method in case a mark is
not attached in this section.
NOTE: Confirm SRS and Horn harness connector is
fixed by the steering wheel.
RTW33BSH000601

CAUTION: Never apply force to the steering wheel in
direction of the shaft by using a hammer or othe
r
impact tools in an attempt to remove the steering
wheel. The steering shaft is designed as an energy
absorbing unit.
2. Tighten the steering wheel fixing nut to the specified
torque.
Torque: 31 - 39 N





m (3.2 – 4.0 kg





m/23 - 29 lb ft)
3. Support the inflator module and carefully connect the
SRS connector and horn lead. (with SRS air bag)
060R300041
4. Connect the horn leads at center of wheel. (without
SRS air bag)
NOTE: Horn leads is letting a bracket top pass.
(Plastic type steering wheel only)



RTW43BSH000301

POWER-ASSISTED STEERING SYSTEM 3B-47

6. Install the driver knee bolster assembly.
7. Install the steering lower cover and engine hood
opening lever.
8. Install the steering wheel and align the setting
marks.
Refer to the adjustment method in case a mark is
not attached in this section.
NOTE: Confirm SRS and Horn harness connector is
fixed by the steering wheel.
RTW33BSH000601
CAUTION: Never apply force to the steering wheel in
direction of the shaft by using a hammer or othe
r
impact tools in an attempt to remove the steering
wheel. The steering shaft is designed as an energy
absorbing unit.
9. Tighten the steering wheel fixing nut to the specified
torque.
Torque: 31 - 39 N




m (3.2 – 4.0 kg




m/23 - 29 lb ft)
10. Support the inflator module and carefully connec
t
the SRS connector and horn lead. (with SRS air
bag)
060R300010

11. Connect the horn leads at center of wheel. (without
SRS air bag)
NOTE: Horn leads is letting a bracket top pass.
(Plastic type steering wheel only)



RTW43BSH000301
12. Push the born pad area 1-4.
Tighten the born pad fixing screw to the specifed
torque (without SRS air bag)
Torque: 2 - 4 N





m (0.2 – 0.4 kg





m/17 - 35 lb ft)
NOTE: A horn pad is not struck at the time o
f
attachment.



RTW43BSH00040

POWER-ASSISTED STEERING SYSTEM 3B-53

825RS048
4. Install the driver knee bolster assembly.
5. Install the steering lower cover and engine hood
opening lever.
6. Install the steering wheel and align the setting marks.
Refer to the adjustment method in case a mark is no
t
attached in this section.
NOTE: Confirm SRS and Horn harness connector is
fixed by the steering wheel.
RTW33BSH000601

CAUTION: Never apply force to the steering wheel in
direction of the shaft by using a hammer or othe
r
impact tools in an attempt to remove the steering
wheel. The steering shaft is designed as an energy
absorbing unit.
7. Tighten the steering wheel fixing nut to the specified
torque.
Torque: 31 - 39 N





m (3.2 – 4.0 kg





m/23 - 29 lb ft)

8. Support inflator module and carefully connect the
SRS connector and horn lead, then install inflato
r
module. (with SRS air bag)
060R300010
9. Connect the horn leads at center of wheel. (without
SRS air bag)
NOTE: Horn leads is letting a bracket type pass.
(Plastic type steering wheel only)



RTW43BSH000301

3B-60 POWER-ASSISTED STEERING SYSTEM

9. Turn the SRS coil counter clockwise to full, return
about 3 turns and align the neutral mark. (with SRS
air bag)
CAUTION: When turning the SRS coil counte
r
clockwise to full, stop turning if resistance is felt.
Forced further turning may damage to the cable in
the SRS coil.
826RW014
10. When installing the steering column cover, be sure to
route each wire harness as illustrated so that the
harnesses do not catch any moving parts.
825RW017
Legend
(1) Steering Column Cover
(2) Starter Switch Harness
(3) Combination Switch Harness
(4) Inflator Module Harness

11. Install steering wheel and align the setting marks
made when removing.
Refer to the adjustment method in case a mark is
not attached in this section.
NOTE: Confirm SRS and Horn harness connector is
fixed by the steering wheel.
RTW33BSH000601

CAUTION: Never apply force to the steering wheel in
direction of the shaft by using a hammer or othe
r
impact tools in an attempt to remove the steering
wheel. The steering shaft is designed as an energy
absorbing unit.
12. Tighten the steering wheel fixing nut to the specified
torque.
Torque: 31 - 39 N




m (3.2 – 4.0 kg




m/23 - 29 lb ft)
13. Support the module and carefully connect the
module connector and horn lead, then install inflato
r
module.
NOTE: Pass the lead wire through the tabs on the
plastic cover (wire protector) of inflator to prevent lead
wire from being pinched.
14. Tighten bolts to specified torque.
Torque: 2 - 4 N




m (0.2 – 0.4 kg




m/17 - 35 lb in)
15. Install driver knee bolster (reinforcement).
16. Install instrument panel lower cover.
17. Install the engine hood opening lever.
18. Connect the yellow 2-way SRS connector and horn
lead located under the steering column.
19. Connect the battery "-" terminal cable. (with SRS ai
r
bag)

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

3C-60 FRONT SUSPENSION
Checkpoint Trouble Cause Countermeasure

Steering linkage and steering
gearReplaceWorn
AdjustImproper OK
NG NG
OKTire pressure Continued from the previous page
Steering unit fixing bolts and
linkageRetightenLoose
Adjust or replaceIncorrect adjustment or
abrasion OK
NG NG
OKFront wheel bearing
Lubricating oil and grease to
steering linkageReplaceInsufficient NG OK

FRONT SUSPENSION 3C-61
6. EXCESSIVE STEERING WHEEL PLAY

Checkpoint Trouble Cause Countermeasure



Front wheel bearing


Steering linkage


Adjust or replace


Replace


Incorrect adjustment or
abrasion


Worn


Replace

Worn

NG NG NG
OK OK Upper, and lower links,
bushing (4

2 Except high
ride suspension)