90 Quattro 20V L5-2309cc 2.3L DOHC (7A) (1990)
install in groove in housing
12 - O-ring*
27 X 2.5 mm
always replace
install in groove of seal retainer
13 - Seal retainer
removing Fig. 5
14 - Compression spring
install into thrust piece
15 - Thrust piece
16 - Washer
17 - 20 Nm (15 ft lb)
18 - Valve housing
19 - Valve housing seal*
always replace
removing Fig. 1
installing Fig. 2
20 - Washer
21 - Pin*
2.5 X 6 mm
always replace
pull pin with pliers before removing valve housing
22 - Steering pinion/rotary valve
removing Fig. 6
23 - O-ring*
60 X 2 mm
24 - O-ring*
9 X 2 mm
25 - Cap
50 Nm (37 ft lb)
secured with 2 punch marks 180° apart
26 - Support ring
always replace
installed position Fig. 8
27 - O-ring*
44 X 2.5 mm
always replace
28 - Steering rack
to remove: unscrew cap and slide gear rack to left out of housing
note any scoring in area of steering rack seal