Differential, Adjusting

Differential, adjusting





Special tools and equipment
^ VW 353 Transmission support
^ VW 385/17 End measuring plate
^ VW 387 Universal dial gauge bracket
^ VW 402 Thrust plate
^ VW 408 A Press tool
^ 3005 Press disk





Special tools and equipment
^ 3259 Tube
^ 3345 Tube
^ V.A.G. 1331 Torque wrench
^ 1-Kukko 21/7 Internal puller
^ 4-Kukko 22/2 Counter support

The differential must be adjusted, when
^ Transmission housing
^ Clutch housing
^ Differential housing
or the
^ Differential tapered roller bearing have been replaced.
Adjustment overview, Refer to Adjustment Overview
^ Press tapered roller bearing outer race with shim (thickness 0.65 mm) into clutch housing.

Note:

Inner and outer tapered roller bearing races are a pair. Do not interchange.

^ Press tapered roller bearing outer race without shim into transmission housing.
^ Fit differential into clutch housing
^ Fit transmission housing and tighten 5 bolts to torque setting.





^ Press differential in direction of clutch housing and when doing this turn it eight times.
^ Press differential in direction of transmission housing and when doing this turn it eight times.





^ Mount dial gauge and "0" with 1 mm preload.
A- Dial gauge extension 30 mm
^ 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 (0.30 mm) to reading obtained.





Example:
^ Take off transmission housing.





^ Pull tapered roller bearing outer race out of transmission housing.
A - Counter support, e.g. Kukko 22/2
B - Internal puller 46 to 58 mm, e.g. Kukko 21/7
^ Insert shims of correct thickness, thickest shim first.





The following shims are available:
^ Press outer race in again and tighten transmission housing to torque setting.