RE-Determining Shim "S4" When Replacing Bearing Housing

Re-determining shim "S4" when replacing bearing housing, 01X, 6-Speed Front-wheel Drive M/T

Special tools, testers and auxiliary items required





^ Universal dial gauge bracket VW387





^ Assembly tool VW792
^ Digital depth gauge (e.g. VAS 6087)
^ Dial gauge
^ Dial gauge extension, 30 mm
^ Straightedge

- Clean housing flange.





- Place straightedge (e.g. 19.50 mm wide - 1 - onto housing flange.
- Measure difference between depth - a - on old and new bearing housing with a digital depth gauge (e.g. VAS 6087).

Example:





- If new bearing housing is deeper, install a thicker "S4" shim.
- If previous bearing housing is deeper, install a thinner "S4" shim.

Example:





Shims available.
- Press tapered roller bearing outer race with shim "S4" into bearing housing
- Insert completely assembled pinion shaft into transmission housing again.
- Install bearing housing and transmission cover and tighten bolts to 35 Nm.
- Turn pinion shaft 5 turns in each direction so that taper roller bearings seat properly.





- Install assembly device VW 792 on transmission housing; when doing so, insert an M12 nut - A - between assembly device VW 792 and transmission housing.
- Attach universal dial gauge bracket VW 387 with dial gauge and 30 mm extension.

Note:
^ Attach dial gauge extension exactly at the center of the webbing intersection on the transmission cover - arrow -.

- Set dial gauge (3 mm measuring range) to "0" with 1 mm preload.
- Loosen transmission cover bolts and turn pinion shaft several times.
- If correct shims have been selected the dial gauge will now indicate the following value:

^ 0.06 to 0.12 mm

If this reading is not obtained, the adjustment must be corrected.