Adjusting the lateral clearance in the engagement of the main gear gears (Audi 100 C3)

This adjustment is necessary when replacing the main gear, gearbox housing, differential box and bearings, as well as when adjusting the distance between the end of the drive gear and the differential axle.

Install the secondary shaft and differential.

Rotate the differential several times to allow the bearings to self-align.

Install devices for measuring the lateral clearance between the teeth of the driving and driven gears when the differential is rotating and the secondary shaft is stationary; the measurement is taken along the diameter at a distance of 71 mm from the differential axis. The lateral clearance between the teeth of the driving and driven gears should be within 0.10-0.20 mm.



If the clearance is not within the specified limits, move the adjusting rings from one side of the differential to the other until the normal clearance is obtained.