Porsche 911 Carrera Technical Manual page 94

911 Carrera 4 (996) Final drive -Differential, differential lock
Removing and installing the viscous clutch
Removal
1. Remove cardan shaft
(refer to Serv. No. 39 02 19).
Installation
Install in reverse order, observing the following
points:
1. Insert supporting disc and fit snap ring with
special tool 9638.
2. Remove front final drive
(refer to service No. 39 88 19).
3. Clamp final drive into the vise with special
tool VW 457, drain oil and remove the
long-neck pipe.
A (/1-
0 .,~
...I
\"
A -Special tool
B -Snap ring
256_98
'\\
2. Always replace a-ring for long-neck pipe
and coat with Vaseline.
A -Special tool VW 457
255_98
3. Uniformly tighten fastening screws for
long-neck pipe in diagonally opposite
sequence.
4. Remove snap ring and take out viscous
coupling with supporting ring.
8
4. Fill in oil for final drive (refer to
Servo No. 39 90 55).
8
39 60 19 Removing and installing the viscous clutch
Printed in Germany -14, 1998 C4S39113
39 -115