Adjustment Overview

WARNING: This page is about a different car, the 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

When performing assembly work on the transmission a new adjustment of the pinion ring gear (differential) is only required if components were replaced which directly influence the final drive adjustment.
No adjustment is needed when replacing drive pinion double angular contact ball bearing.
Note the following table to avoid unnecessary adjustments:

To be adjusted:

Pinion

Ring gear

Torsional backlash

("S ₃ " + "S ₄ ")

("S ₁ " + "S ₂ ")

0.15 ± 0.04 mm

Refer to PINION, ADJUSTING

Refer to FINAL DRIVE, ADJUSTING

Refer to Torsional Backlash, Measuring or Torsional Backlash, Measuring .

Replaced part

Transmission Housing

Differential ⁽¹⁾

Differential bearing

Pinion ⁽¹⁾

Final Drive Cover

⁽¹⁾	The pinion and differential (ring gear) do not have to be replaced together.

Sequence for readjusting final drive set

If the pinion and ring gear (differential) must be adjusted, maintain the following sequence, in the interests of a rational sequence:

Fig 1: Pinion and Ring Gear (Differential) Sequence

Courtesy of AUDI OF AMERICA, LLC

Total shim thickness "S _total " Determine (S₁ plus S₂ ) for specified preload of tapered roller bearing/differential.
Determine the shim "S₃ " so that the dimension from center of ring gear to facing drive of drive pinion corresponds to the installation dimension determined during production.
Shim "S ₄ " for positioning the double angular contact ball bearing/pinion in the transmission housing.
Total shim thickness "S _total " Distribute (S₁ plus S₂ ) so that the specified torsional backlash is present between the ring gear and the drive pinion.