2007 ISUZU KB P190 Workshop Repair Manual

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Page 273 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 3B-12 POWER-ASSISTED STEERING SYSTEM
901RW 270
4. Disconnect the feed line and return line from
steering unit.
Remove the clips on the crossmember and frame.
W ire the power steering line to fram

Page 274 of 6020

ISUZU KB P190 2007 Workshop Repair Manual POWER-ASSISTED STEERING SYSTEM 3B-13
Power Steering Unit Disassembled View

RTW 53BLF000401
Legend
(1) Tie-rod End
(2) Lock Nut
(3) Clip
(4) Bellows
(5) Band
(6) Tie-rod Assembly
(7)

Page 275 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 3B-14 POWER-ASSISTED STEERING SYSTEM
Disassembly
NOTE : The valve hosing is made of aluminum and care
should be exercised when clamping in a vise, etc.
to prevent distortion or damage.
For the l

3B-14 POWER-ASSISTED STEERING SYSTEM
Disassembly
NOTE : The valve hosing is made of aluminum and care
should be exercised when clamping in a vise, etc.
to prevent distortion or damage.
For the left side, follow the same steps as right side.
1. Loosen lock nut and remove tie-rod end.
2. Remove clip and band, then remove bellows.
• Use a pair of pliers to open the clip. Slide the cliptoward the tie-rod end.

RUW 53BSH000401
• Remove band from the bellows by using
screwdriver.

RUW 53BSH000501

CAUTION :
For 4 ×
××
×
2 except High ride suspension models;
The band is not reusable. If removed, it must be
replaced with a new one.
Take care not to damage the bellows during band
removal.
For 4 ×
××
×
4 and 4 ×
××
×
2 High ride suspension models;
The band and bellows are not reusable. If removed,
they must be replaced with a new one.
3. Remove tie-rod assembly.
To remove, move the boot toward the tie-rod end, then remove tab washer.
4. Remove oil line, mounting rubber and dust cover.

Inspection and Repair
Make necessary correction or parts replacement if wear,
damage, corrosion or any other abnormal condition are
found during inspection.
Check the following parts.
1. Tie-rod end
2. Lock nut
3. Clip
4. Bellows
5. Band
Tie-Rod End
If looseness or play is found when checked by moving
the end of ball joint at tie-rod end, replace tie-rod end.

Tie-Rod Assembly
If the resistance is insufficient or play is felt when
checked by moving the ball on the tie-rod, replace the
tie-rod assembly.

Rubber Parts
For 4 ×2 except High ride suspension models;
If wear or damage is found during inspection, replace
with new ones.
For 4 ×4 and 4 ×2 High ride suspension models;
Even if wear or damage is not found after removal,
replace with new ones.

Reassembly
1. Install mounting rubber and dust cover (If removed).
2. Install oil line. Torque: 12 N ⋅
⋅⋅
⋅
m (1.2 kgf ⋅
⋅⋅
⋅
m/104 lb ⋅
⋅⋅
⋅
in)

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ISUZU KB P190 2007

Page 276 of 6020

ISUZU KB P190 2007 Workshop Repair Manual POWER-ASSISTED STEERING SYSTEM 3B-15
3. Install tie-rod assembly with tab washer, then tighten
to specified torque. For 4 ×2 except High ride suspension models;
Torque: 83 N ⋅
⋅⋅
⋅
m (8.

Page 277 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 3B-16 POWER-ASSISTED STEERING SYSTEM
Torque Specifications
N⋅m (kgf ⋅m/Ib ⋅ft)

RTW 73BLF000801

Special Tools

ILLUSTRATION
TOOL NO.
TOOL NAME
ILLUSTRATION

TOOL NO.

Page 278 of 6020

ISUZU KB P190 2007 Workshop Repair Manual POWER-ASSISTED STEERING SYSTEM 3B-17
Power Steering Pump (4JH1-TC, 4JA1-T)
Power Steering Pump and Associated Parts

RTW 53BMF000401
Legend (1) Pump Assembly
(2) Suction Hose
(3) Flexib

Page 279 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 3B-18 POWER-ASSISTED STEERING SYSTEM
Power Steering Pump Disassembled View

RTW 63BLF000301
Legend
(1) Bolt
(2) Suction Pipe
(3) O-ring
(4) Shaft Assembly
(5) Oil Seal
(6) Front

Page 280 of 6020

ISUZU KB P190 2007 Workshop Repair Manual POWER-ASSISTED STEERING SYSTEM 3B-19
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 o

POWER-ASSISTED STEERING SYSTEM 3B-19
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 shaft
assembly to solvent.
2. Remove the bolt, suction pipe and O-ring.
3. Remove the connector, O-ring, relief valve and spring.
4. Remove the bolt, rear housing and O-ring.
5. Remove the snap ring.
6. Remove the shaft assembly.
7. Remove the oil seal.
CAUTION: When removing the oil seal, be careful
not to damage the housing.
8. Remove the pump cartridge assembly from the front housing.
9. Remove two O-rings.

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. W hen part
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). W hen
part replacement becomes necessary, the pump
cartridge should be replaced as a subassembly.

Cam
The inner face of the cam should have a uniform
contact pattern without a sign of step wear. W hen 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 (0.0004 in)), which can be felt b
y
the finger 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.

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ISUZU KB P190 2007

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