Radial Run-Out at Driveshaft Flange, Measuring

Radial Run-Out at Driveshaft Flange, Measuring

Special tools, testers and auxiliary items required

• Universal dial gauge bracket (VW387)

• Dial gauge

• M10 x 85 bolt

• The radial run-out must always be measured when the drive shaft flange has been removed from the rear final drive. Remove old paint marking and make new marking.

• If a new drive shaft is being installed and the marking on the flange shaft of the rear final drive is no longer visible, the point of maximum radial run-out must be measured with a dial gauge and marked with paint.

• The paint marking on the drive shaft is then brought into alignment with this paint marking => [ Driveshaft ] Driveshaft.

• The radial run-out can also be measured with the rear final drive installed, but the drive shaft must be disconnected at the rear final drive. Observe notes => [ Driveshaft Assembly Overview ] Driveshaft Assembly Overview.

- Secure Universal dial gauge bracket (VW387) with dial gauge to rear final drive.





- Position dial gauge on ground circumference in driveshaft flange - arrow - and set to zero with a preload of 1 mm.

- Turn differential via both rear wheels (left and right flange shafts) until flange on rear final drive completes one rotation.

- Make a paint marking at point of greatest radial run-out on outside of flange (= greatest distance from axis of rotation).

- Remove old marks on driveshaft flange.

- Install driveshaft => [ Driveshaft ] Driveshaft.