Porsche 911 TURBO - 1989 Workshop Manual page 23

Rear Wheel Suspension
Rear Axle Trai
ng Arm to Spring Strut
Self-locking nuts are used instead of hexagon nuts with lockwashers (Schnorr) on rear axle
trailing arm/spring strut connections and toe excenters beginning with December of 1983.
The tightening torque value was also increased.
The new bolts and self-locking nuts can be installed retroactively.
The higher torque value is applicable to old and new version bolting.
It is recommended to replace removed self-locking nuts.
Survey of Changes
Rear Axle Trailing Arm -Spring Strut
Old New
900.083.025.08
(M 12 x 1.5 x 40)
900.083.019.08
(M 12 x 1.5 x 35)
Bolt
1 .1
900.910.085.02
(self-locking nut)
900.076.035.02
(hex. nut)
1.2 Nut M 12 x 1.5
999.523.109.02
Lockwasher
none
901.333.143.01
same
1.3 Washer
(bolt head and nut ends)
120 Nm
90 Nm
Tightening torque
42 -11 Disassembling and Assembling Rear Axle
Printed in Germany -V I 1984