Determine Adjustments Needed and Procedure Sequence

Practical Procedure When Readjusting The Drive Set
If it is necessary to adjust drive pinion and ring gear, follow the below sequence to ensure an efficient working procedure:
1. Determine the total thickness of shims "Stot" (S1 Plus S2) for the specified preload on the tapered roller bearings/differential.
2. Determine the thickness of shim "S3".
3. Split the total shim thickness "Stot" into S1 and S2 so that the specified circumferential backlash is present between ring gear and drive pinion.

- The aim of this adjustment is to restore the smoothest running position which has been achieved on test equipment in the production line.

- To achieve correct results, greatest possible cleanliness for all assembly work and measuring procedures is essential.

- When assembling the final drive assembly, it is only necessary to readjust drive pinion and ring gear or drive set if components have been replaced which have a direct influence on the adjustment.

- Refer to the following table to avoid unnecessary adjustment procedures.