Servicing power-assisted steering box — AUDI

Notes:

Use is made for the power steering of hydraulic fluid, part no.
G 002 000.
All parts marked 1) are contained in repair set and are to be replaced when performing servicing work.
Moisten all sealing elements with hydraulic fluid before fitting.
Steering components are not to be welded and straightened.
Replace self-locking nuts and bolts.

Steering box
Removing and installing => Page
48-72
Adjusting => Page
48-102
Adjusting toe after removal and installation => Page
44-12

Rack seal 1)
Replace
Extracting => Fig.
48-92

Circlip
Can only be removed and installed after taking out rack

Retaining ring
Slide home on rack
Insert boot in annular groove

Boot
Check for damage
Can be replaced with steering box in position
Adjusting toe after replacement
=> Page
44-12

Clamp
Use screw clamps when performing repair work
Screw connection faces bulkhead

O-ring 1)
Replace

Adjusting screw
Adjusting steering play => Page
48-102

Hexagon bolt, 20 Nm

Cover
Screw onto steering box housing
Installation position: The two adjacent holes must face forwards when viewed in direction of travel

O-ring 1)
35.0 x 2.0 mm
Replace
Insert in annular groove of steering box housing

O-ring 1)
27.0 x 2.5 mm
Replace
Insert in annular groove of seal holder

Seal holder
Removing => Fig.
48-93

Spring
Insert in thrust piece

Thrust piece
Washer
Cheese-head bolt, 20 Nm
Valve housing
Sealing ring 1)
Replacing => Page
48-95

Supporting disc
Spring pin 1)
2.5 x 6.0 mm
Replace
Pull out using universal pliers before detaching valve housing

Rotary slide valve/steering pinion
Driving out of steering box housing
=> Fig.
48-93

O-ring 1)
60.0 x 2.0 mm
Replace

O-ring 1)
9.0 x 2.0 mm
Replace

Cap, 50 Nm
Secure by way of two centre punch marks offset by 180°

Supporting ring 1)
Replace
Fit to cap
Installation position => Fig.
48-94

O-ring 1)
44.0 x 2.5 mm
Replace
Fit to cap
Installation position => Fig.
48-94

Rack
Unscrew cap and push rack to left out of steering box housing
Watch out for scoring around rack seal
Inserting => Page
48-98

Fig.1
Extracting rack seal

Clamp steering box housing in vice with soft jaws.
Insert commercially available internal puller (e.g. Kukko 21/4) in sealing lip.

Screw tool VW 771 with VW 771/15 onto internal puller and drive out rack seal.

Fig.2
Removing seal holder

Pull out seal holder using commercially available outer circlip pliers.

Fig.3
Driving out steering pinion

Hold steering pinion by hand and drive it out by tapping firmly on steering box housing with rubber-headed hammer.

Fig.4
Installation position of supporting ring

1 -
Screw cap
2 -
Supporting ring
3 -
O-ring