Pinion Flange: Service and Repair

Driveshaft Flange Measuring Radial Run Out and Marking

Special tools, testers and auxiliary items required

• Universal dial indicator bracket (VW387)

• Dial indicator

• M10 x 85 bolt

• The radial run out must always be measured when the driveshaft flange on the rear final drive has been removed. Affix a new colored dot and remove the old color marking.

• If a new driveshaft is installed and if the marking on the flange shaft of the rear final drive is no longer visible, the position of maximum radial run out must be determined and marked by a colored dot.

• The colored dot on the driveshaft is positioned opposite the above colored dot, refer to => [ Installing ] Driveshaft.

• The radial run out can be measured when rear final drive is installed but the driveshaft must be disconnected at the rear final drive. See notes => [ Driveshaft Assembly Overview ] Driveshaft Assembly Overview.

- Secure universal dial indicator holder (VW387 ) with dial indicator at rear final drive.





- Position dial indicator on ground diameter in driveshaft flange - arrow - and set to "0" with 1 mm preload.

- Rotate differential by turning the two rear wheels (left and right hand flange shafts) simultaneously in one direction until the driveshaft flange has undergone one complete revolution.

- Mark the position of greatest radial run out on flange exterior by a colored dot (equates to greatest distance from rotational axis).

- Remove old marking from driveshaft flange.

- Install the driveshaft. Refer to => [ Driveshaft ] Driveshaft.