Selecting the secondary shaft rear bearing adjusting ring (Audi 100 C3)

If the final drive is to be used again, press the outer race of the rear bearing together with the old adjusting ring into the gearbox housing. If parts have been replaced, install the outer race of the bearing without the adjusting ring.

Install the secondary shaft and press on the second inner race of the rear bearing.

Tighten the secondary shaft rear end nut to a torque of 10.0 kgf·m.

Install the special secondary shaft preload adjusting washer VW 381/11 as described in the previous paragraph.

Install the VW 385 measuring mandrel (calibrated to a preload of 2 mm) to "zero" using the VW 185-30 indicator and measure the value "r", compare it with the calculated value "r" if the main gear was replaced, or with the value marked on the driven gear when the main gear was replaced. If the obtained value "r" is less than the calculated one, then the adjusting ring S3 of greater thickness should be installed, and vice versa. The difference between the obtained and calculated values "r" shows how much the thickness of the adjusting ring S3 should be reduced or increased.

Remove the measuring instrument kit and install the selected adjusting ring S3 under the outer race of the secondary shaft rear bearing.

Check that the adjustment is correct.

Perform gearbox adjustments as described above.