Porsche 911 Carrera Technical Manual page 170

Appropriate sequence for readjusting the drive set
If the pinion shaft and crown wheel have to be adjusted, it is best to follow the sequence below in the
interest of rational working:
1. Determine total disc thickness "Stat" (Sl plus S2) for the correct preload of the tapered roller
bearings/differentials.
2. Determine disc thickness "S3".
3. Determine disc thickness "S4".
4. Determine disc thickness "S5".
5. Determine installation dimension "E"
6. Divide the total disc thickness "Stot" into Sl and S2 so that the circumferential backlash between the
crown wheel and drive pinion is correct.
The aim of the adjustment is to regain the position of maximum smooth running which was determined in
production on the testing machine.
The greatest possible cleanliness during all assembly work and measuring procedures is an essential
requirement for a perfect result.
39 08 15
Adjusting drive set -GT3
Printed in Germany -29, 1999
39 -214
GT339211