RE-Determining Shim S4

Re-determining shim S4, 01E, 6 Spd. M/T AWD

Special tools and equipment

VW 385/32 End measuring plate:

3116 Spring pin:

^ Digital depth gauge accurate to within at least 5/100 mm.





This procedure must be carried out when replacing the following components:
^ Bearing plate
^ Hollow shaft
The procedure restores the required preload of the taper roller bearings for the drive pinion and hollow shaft.

1 - Shim S4
2 - Bearing plate
3 - Transmission housing
4 - Hollow shaft
5 - Taper roller bearing of drive pinion/hollow shaft
6 - Pinion shaft





a - Bearing plate housing depth
b - Dimension from drive pinion head to shoulder of taper roller bearing on hollow shaft
^ - Taper roller bearing (drive pinion/hollow shaft) pre-tensioned to 10 Nm

S4 -Thickness of shim S4

Note: When replacing the drive pinion (final drive set), observe adjustment overview.

Determining thickness of shim when replacing bearing plate





- Measure difference of depth a on old and new bearing plates.
Example:





- If new bearing plate is deeper, install a thicker S4 shim.
- If old bearing plate was deeper, install a thinner S4 shim.
Example:





Available shims go to table.

Determining thickness of shim when replacing hollow shaft
- Use a caliper gauge accurate to within at least 5/100 mm.





- Tighten spring pin to exactly 10 Nm.
A - Vice clamps





- Place end measuring plate VW 385/32 onto drive pinion head and measure dimension "D".
^ Top measuring point is shoulder for inner race of small taper roller bearing.
^ Example: 248.50 mm
- Install new hollow shaft and once again measure dimension "D".
^ Example: 248.70 mm





- Determine the difference:





- Install appropriately thinner shim S4 if dimension d of new hollow shaft is larger.
- Install appropriately thicker shim S4 if dimension d of new hollow shaft is smaller.

Available shims for S4





Different tolerances make it possible to obtain the exact shim thickness required, if necessary, install 2 shims.