2004 ISUZU TF SERIES Workshop Manual

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Page 3449 of 4264

ISUZU TF SERIES 2004 Workshop Manual POWER-ASSISTED STEERING SYSTEM 3B-19

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 oi

Page 3450 of 4264

ISUZU TF SERIES 2004 Workshop Manual 3B-20 POWER-ASSISTED STEERING SYSTEM

Torque Specifications
4JH1-TC, 4JA1-TC, 4JA1-L N
m (kg
m/Ib ft)

RTW43BLF000501

Page 3451 of 4264

ISUZU TF SERIES 2004 Workshop Manual POWER-ASSISTED STEERING SYSTEM 3B-21

Power Steering Pump and Associated Parts (C24SE)
RTW33BLF000801

Legend
(1) Pump Assembly
(2) Hose, Suction
(3) Hose, Flexible

(4) Bolt
(5) Connecto

Page 3452 of 4264

ISUZU TF SERIES 2004 Workshop Manual 3B-22 POWER-ASSISTED STEERING SYSTEM

Power Steering Pump Disassembled View

RTW43BMF000101

Legend
(1) Bolt
(2) Suction Pipe
(3) O-ring
(4) Shaft
(5) O-ring
(6) Front Housing
(7) O-rin

Page 3453 of 4264

ISUZU TF SERIES 2004 Workshop Manual POWER-ASSISTED STEERING SYSTEM 3B-23

Disassembly
1. Clean the oil pump with solvent (plug the discharge
and suction ports to prevent the entry of solvent). Be
careful not to expose the oil seal of

Page 3454 of 4264

ISUZU TF SERIES 2004 Workshop Manual 3B-24 POWER-ASSISTED STEERING SYSTEM

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

3B-24 POWER-ASSISTED STEERING SYSTEM

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

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. Needle bearing fitting
face must be free from damage and wear.

O-ring, Oil Seal, Retaining 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 connector
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.
3. Install the vanes to roter with curved face in contact
with the inner wall of cam.
442RS005
4. Install rotor and vanes to cam.
5. Install pin to front housing.
6. Install two new O-rings to front housing. Be sure to
discard used O-ring.
7. Install side plate.
CAUTION: When installing side plate, be careful not
to damage its inner surface. Damaged side plate
may cause poor pump performance, pump seizure
or oil leakage.
8. Install pump cartridge assembly to front housing.
9. Install snap ring to shaft end.
10. Install rear housing with a new O-ring. Be sure to
discard used O-ring. Then install bolt and tighten it
to specified torque.
Torque: 22-26 N
m (2.2-2.7 kg
m/16-20 lb ft)
11. Install suction pipe with a new O-ring. Be sure to
discard used O-ring. Then install bolt and tighten it
to specified torque.
Torque: 7.8-12 N
m (0.8-1.2 kg
m/6-9 lb ft)
12. Install relief valve and spring.
13. Install connector with a new O-ring. Be sure to
discard used O-ring. Tighten the connector to
specified torque.
Torque: 49-69 N
m (5.0-7.0 kg
m/36-51 lb ft)
14. Install pressure switch assembly and tighten it to
specified torque.
Torque: 15-20 N
m (1.5-2.0 kg
m/11-14 lb ft)

Page 3455 of 4264

ISUZU TF SERIES 2004 Workshop Manual POWER-ASSISTED STEERING SYSTEM 3B-25

Main Data and Specifications
General Specifications
Oil pump Type Vane
Operating fluid
ATF DEXRON®
III

Torque Specifications
C24SE N
m (kg
m/I

Page 3456 of 4264

ISUZU TF SERIES 2004 Workshop Manual 3B-26 POWER-ASSISTED STEERING SYSTEM

Power Steering Pump and Associated Parts (6VE1)
RTW33BLF000701

Legend
(1) Pump Assembly
(2) Hose, Suction
(3) Hose, Flexible

(4) Bolt
(5) Connecto

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