Determining Shim Thickness

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The required bearing tension is reached as follows:

The specified bearing preload is reached when the determined measured value (0, 25 mm) is subtracted from the inserted adjustment shim (1.70 mm).

A constant figure of (0.20 mm) is added to the reading.

Example:

Inserted Adjusting Shim	1.70 mm
- Measured Value	0.25 mm
+ Preload (Constant Value)	0.20 mm
= Adjusting Shim Thickness	1.65 mm

-- Select the correct adjusting shim thickness according to the table; part numbers.

Adjustment Shim Table

Thickness (mm)
1.50	1.80	2.10
1.55	1.85	2.15
1.60	1.90	2.20
1.65	1.95	2.25
1.70	2.00
1.75	2.05

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

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

Fig 1: Identifying Outer Race/Tapered Roller Bearing Pulled Out Of Transmission Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

A - Counter support, for example, Kukko support 22/2

B - Internal puller 46 to 58 mm, for example, Kukko extractor 46-58 mm 21/7

-- Remove the adjusting shim (1.70 mm) from the transmission housing.

-- Install the outer race/tapered roller bearing with the selected adjusting shim (in the example: 1.65 mm) Support the transmission housing directly under the bearing mount using the thrust plate 2050.

Fig 2: Identifying Outer Race/Tapered Roller Bearing Pressed Into Transmission Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.