Opel Frontera UE. Manual - part 49

2A–24

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 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). 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 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.

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. If 
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 for 
installation.

CAUTION:  When installing the oil seal, be careful 
not to damage the oil seal contacting surface of the 
housing.

2. Install shaft assembly.

POWER-ASSISTED STEERING SYSTEM

2A–25

3. Install the vanes to roter with curved face in contact 

with the inner wall of cam.

442RS005

4. Install roter 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: 24N·m (2.4kg·m/17lbft)

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: 10N·m (1.0kg·m/87lbin)

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: 59N·m (6.0kg·m/43lbft)

14. Install pressure switch assembly and tighten it to 

specified torque.

Torque: 18N·m (1.8kg·m/13lbft)

2A–26

POWER-ASSISTED STEERING SYSTEM

Main Data and Specifications

General Specifications

Torque Specifications

E02RX008

Oil pump

Type

Vane

Operating 
fluid

ATF DEXRON®–II–E

POWER-ASSISTED STEERING SYSTEM

2A–27

Transfer Gear Assembly

Transfer Gear Assembly and Associated Parts

441RW002

Legend

EndOFCallout

Removal

1. Apply a setting mark across the universal joint and 

transfer gear so parts can be reassembled in their 
original position.

2. Remove universal joint bolt (steering shaft side).

3. Remove universal joint bolt (steering unit side).

4. Loosen fixing bolt and nut and remove transfer gear 

assembly with shim.

Inspection and Repair

The transfer gear assembly cannot be disassembled. If 
damage or abnormal condition are found, replace to 
new ones.

Installation

1. Install transfer gear assembly with shim by aligning 

the setting marks made when removing.

2. Tighten bolt and nut to the specified torque.

Torque: 54N·m (5.5kg·m/40lbft)

3. Connect universal joint (both side) and tighten the 

bolt to the specified torque.

Torque: 31N·m (3.2kg·m/23lbft)

(1) Transfer Gear Assembly
(2) Bolt, Universal Joint (Steering Shaft Side)
(3) Fixing Bolt Nut

(4) Shim
(5) Bolt, Universal Joint (Steering Unit Side)