Differential, adjusting

WARNING: This page is about a different variant/trim than selected.

Special tools and equipment

Fig 1: Identifying Special Tools - Differential, Adjusting

Courtesy of VOLKSWAGEN UNITED STATES, INC.

The differential must be adjusted, when

or the

have been replaced.

Adjustment overview. Refer to Adjustment overview

Press tapered roller bearing outer race into clutch housing using thrust plate 30-205. Refer to Pressing tapered roller bearing outer race into clutch housing .

NOTE: Tapered roller bearing inner and outer races are paired. Do not interchange!

Press tapered roller bearing outer race without shim into transmission housing using thrust piece 30-205. Refer to Pressing tapered roller bearing outer race into transmission housing .
Install differential into clutch housing
Fit transmission housing and tighten 5 bolts to 25 Nm.

Fig 2: Identifying Special Tools VW 387 & VW 385/17

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Mount dial gauge and "0" with 1 mm preload.
Move differential up and down and recall play indicated on dial gauge (Example: 0.70 mm)

Determining shim thickness

The specified bearing preload is obtained by adding a constant figure (0.40 mm) to the reading obtained.

Example:

Remove transmission housing and pull tapered roller bearing outer race out from transmission housing. Refer to Pulling tapered roller bearing outer race out of transmission housing .
Insert shims of correct thickness, thickest shim first.

The following shims are available:

If the size of shim required is larger than that listed in the table, insert two shims totalling the correct figure.

Varying tolerances make it possible by measuring the shims to obtain the exact shim thickness required.