Front Drive Shafts With Centering

Since June 9, 1995, four-wheel-drive vehicles (911 Carrera 4 and 911 Turbo) have been fitted with drive shafts (No. 1) which are centered in the halfshaft flange (No. 4) of the front axle final drive unit by their caps (No. 2).
It is therefore no longer necessary to check runout when installing drive shafts. Precise introduction dates (and vehicle ident. nos.) are given in Technical Information.
Centering is by means of the cap (2) on the drive shaft (1) and the halfshaft flange (4), which is designed to fit the cap, on the final drive unit.





New (with centering - arrows)





Old (without centering)

For repairs where spare parts are needed and where the customer has complained of vibrations at 180 to 200 kph, only parts (drive shafts or caps and halfshaft flanges) with centering (arrows) must be used. With these parts, the runout checks on the drive shafts are no longer required.

The old drive shafts without centering may be converted to centering by fitting the new cap.





If new drive shafts or old drive shafts with new caps are used, the new halfshaft flanges with internal fitting must also be fitted to the front axle final drive unit.





CAUTION:
- When installing the cap, the sealing surface against the joint must be sealed using sealing gel (000.043.203.47) (arrow).
- The sealing gel must also be used on the caps of the rear axle drive shafts.

For further information (allocation/part nos.) refer to Technical Information.