Porsche 928 Workshop Manual page 851

928 Differential/Transaxle System
39
Recommended Sequence of Adjusting Drive Pinion and Ring Gear
When it becomes necessary to adjust the drive pinion and ring gear. it would be in the interest of econo-
mical procedures to keep to the following sequence.
1. Determine the total shim thickness 'SM."
bearing/differential.
(Sl plus S2) for the specified pre-load of the taper roller
2. Determine shim thickness 'S ".
3
3. Divide total shim thickness '5 tot." in Sl and S2 so that there is the specified amount of backlash
between the ring gear and drive pinion.
The goal of adjustments is to relocate the point of optimal quiet running as was determined in the
special testing machine during production.
Perfect results require absolute care and cleanliness during all assembly and measuring operations.
Location of Shims
Sl = Shim for ring gear
S2 = Shim for ring gear
S3 = Shim for drive pinion
Printed in Germany
Adjusting Drive Pinion and Ring Gear
39 -13