Differential, Adjusting

Differential, Adjusting

Special tools, testers and auxiliary items required

• Magnetic plate 50 MM dia. (VW 385/17)

• Dial gauge holder (VW 387)

• Punch (VW 407)

• Thrust pad (30 - 205)

• Torque wrench 5 to 50 Nm (V.A.G 1331)

• Internal puller (Kukko 21/7)

• Support (Kukko 22/2 )

• Dial gauge

Readjustment of differential is necessary when the following components have been replaced:

• Transmission housing

• Clutch housing

• Differential housing

or

• Tapered roller bearing for differential

Adjustment overview => [ Adjustment Overview ] Adjustment Overview.

- Press tapered roller bearing outer race into transmission housing without shim using thrust pad (30 - 205) => [ Pressing outer race/tapered roller bearing into
transmission housing ] Differential

• Inner and outer race of tapered roller bearing are paired. Do not interchange!

- Press tapered roller bearing outer race into clutch housing using thrust pad (30 - 205) => [ Pressing outer race/tapered roller bearing into
clutch housing ] Differential

- Insert differential into clutch housing.

- Install transmission housing and tighten 5 bolts to 25 Nm.

- Install dial gauge and set to "0" with 1 mm preload.





- Move differential up and down, read off play on dial gauge and note. (Example: 0.70 mm).

Adjustment Shim, Determining

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

Example





- Remove transmission housing and pull tapered roller bearing outer race from transmission housing.





A Support, e.g. ( Kukko 22/2)
B Internal puller 46 to 58 mm, e.g. (Kukko 21/7)

- Insert shims of the correct thickness, the thickest shim first.

The following shims are available:





If size of shim required is larger than that listed in the table, two shims totalling the correct value can be installed.

Different tolerances make it possible to measure the required shim thickness exactly.

- Press in outer race again and tighten transmission housing.