Differential, Adjusting

Differential, Adjusting

=> [ Determining Shim Thickness ]



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 (5-50 Nm) (V.A.G 1331)

• Kukko Extractor 46-58 mm (21/7)

• Kukko Support (22/2)

• Dial Gauge

A new differential adjustment is required when the following components have been replaced:

• Transmission housing

• Clutch housing

• Differential housing

or the

• Differential tapered roller bearing

Adjustment overview, refer to=> [ Adjustment Overview ] Adjustment Overview.

- Press tapered roller bearing outer race into transmission housing without shim, using thrust pad (30 - 205).

• Bearing inner- and outer race of tapered roller bearing are paired. Do not interchange them.

- Press tapered roller bearing outer race into clutch housing, using thrust pad (30 - 205).

- Insert differential into clutch housing.

- Mount the transmission housing and tighten the five bolts to 25 Nm.

- Install the dial gauge and set it to "0" with a 1 mm pre-load.





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

Determining Shim Thickness

Example:






Adjustment Shim Table






• For the correct shims, refer to the Parts Catalog.

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

Removing the Outer Race/Tapered Roller Bearing from the Transmission Housing





A Support, for example, (22/2)
B Extractor 46-58 mm, for example, (21/7)

- Install the shim with the correct thickness, thickest shim first.

If the measured shim thickness is larger than those listed in the table, then install two shims that add up to the necessary thickness.

Tolerance variations make it possible to find the exact shim thickness required.

- Install the tapered roller bearing inner race again and fasten the transmission housing.