Volkswagen Workshop Service and Repair Manuals

• ‒ → Tighten socket head fastener to 100 Nm without dished washer and without shim.

• A - Torque wrench
  B - 22 mm socket
• The parking lock must be engaged.

• ‒ Remove socket head fastener.

• ‒ → Measure distance between input gear and taper roller bearing inner race.
• ‒ Insert dial gauge and zero with a preload of 3 mm. Note reading (example 1.00 mm).

• The thickness of the dished washer 1.50 mm must be added to the reading of = 2.50 mm.

Determining shim

The specified bearing preload is achieved if the bearing preload of 0.18 mm is deducted from the figure obtained from the measurement (dished washer + reading) of 2.50 mm.

Example:

• ‒ Determine shim on the basis of the table and fit onto drive shaft. Table of shims
  .
• ‒ Insert axial needle bearing and tighten socket head fastener including dished washer to 250 Nm.

Note:

Insert axial needle bearing for input shaft before tightening socket head fastener. Installation position => Removing and installing input gear, Page 39-8.

→ Checking friction torque

A - Torque gauge, commercially available 0...600 Ncm

B - Wrench socket (41 mm AF)

The friction torque of new taper roller bearings must be 180...220 Ncm greater than at the pinion shaft.

Example:

• ‒ Moisten bearings beforehand with ATF.

    1)    Insert the friction measured for the drive pinion in the case of used bearings.