Opel Frontera UE. Manual - part 652

POWER-ASSISTED STEERING SYSTEM

2A–21

4. Apply a thin coat of grease to the shaft for smooth 

installation.  Then install bellows.

5. Install band and clip.

6. Install tie-rod end and tighten lock nut.

Torque: 98N·m (10.0kg·m/72lbft)

Main Data and Specifications

General Specifications

Torque Specifications

E02RX007

Special Tools

Power Steering unit

Type

Rack and pinion

Rack stroke

152mm (5.98 in)

Lock to lock

3.64

ILLUSTRATION

TOOL NO.

TOOL NAME

5–8840–2005–0

(J–29107)

Tie rod end remover

2A–22

POWER-ASSISTED STEERING SYSTEM

Power Steering Pump

Power Steering Pump and Associated Parts

436RX001

Legend

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Removal

1. Remove the drive belt.

2. Place a drain pan below the pump.

3. Disconnect the suction hose.

4. Disconnect the flexible hose.

5. Remove the power steering fixing bolt and remove 

the pump assembly.

Installation

1. Install the pump assembly to the pump braket, 

tighten the fixing bolt to the specified torque.

Torque: 46N·m (4.7kg·m/34lbft)

2. Install the flexible hose.

Tighten the eye bolt to specified torque.

Torque: 54N·m (5.5kg·m/40lbft)

3. Install the drive belt.

4. Connect the suction hose, then fill and bleed 

system.
Refer to Bleeding the Power Steering System in this 
section.

(1) Pump Assembly
(2) Hose, Suction

(3) Hose, Flexible
(4) Bolt

POWER-ASSISTED STEERING SYSTEM

2A–23

Power Steering Pump Disassembled View

442RX001

Legend

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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 pressure switch assembly.

5. Remove the bolt, rear housing and O-ring.

6. Remove the snap ring.

7. Remove the shaft assembly.

8. Remove the oil seal.

CAUTION:  When removing the oil seal, be careful 
not to damage the housing.

9. Remove the pump cartridge assembly from the front 

housing.

10. Remove two O-rings.

(1) Bolt
(2) Suction Pipe
(3) O-ring
(4) Shaft Assembly
(5) Oil Seal
(6) Front Housing
(7) O-ring
(8) O-ring
(9) Side Plate

(10) Rotor and Vane
(11) Pin

(12) Cam
(13) Pump Cartridge Assembly
(14) O-ring
(15) Snap Ring
(16) Rear Housing
(17) Bolt
(18) Spring
(19) Relief Valve
(20) O-ring
(21) Connector
(22) Pressure Switch Assembly

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.