Porsche 928 Workshop Manual page 112

38
Automatic Transmission/Gears, Valve Body
928
Condition:
Rattling noise at engine speed of 1500 rpm in all selector lever positions, except "R"
Cause/Correction:
Plates of reverse gear brake swinging in transmission case.
1. Replace inner plates of reverse gear brake B 3;
adjust play to smallest value.
Condition:
Light grinding noise in selector lever positions "P" and "N".
Cause/Correction:
This noise concerns a normal rolling noise from the
front gear set, which cannot be eliminated.
Condition:
Chattering noise when driving in reverse gear
Cause/Correction:
Play of plate brake B 2 excessive. Outer plate carrier
of K 1 scraping on piston of B 3,
1. Adjust play to specified value (1.5 to 2 mm).
a
38-122
Troubleshooting
Printed in
Germany