Determining Shim Thickness

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The specified bearing preload is obtained by adding a constant preload figure of 0.25 mm to the reading obtained.

Example:

Measured value	0.70 mm
+ Preload (constant value)	0.25 mm
Adjusting shim thickness =	0.95 mm

Example:

Bearing Clearance Measured Value	Adjustment Shim Thickness According to the Table
0.70 mm	0.95 mm

Adjustment Shim Table

Bearing play	Adjusting shim
Measured value (mm)	Thickness (mm)
0.303 to 0.449 0.450 to 0.499 0.500 to 0.549	0.650 0.700 0.750
0.550 to 0.599 0.600 to 0.649 0.650 to 0.699	0.800 0.850 0.900
0.700 to 0.749 0.750 to 0.799 0.800 to 0.849	0.950 1.000 1.050
0.850 to 0.899 0.900 to 0.949 0.950 to 0.999	1.100 1.150 1.200
1.000 to 1.049 1.050 to 1.099 1.100 to 1.149	1.250 1.300 1.350
1.150 to 1.199	1.400

-- 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, 22/2

B - Internal puller 46 to 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 secure the transmission housing, refer to Installing the Outer Race/Tapered Roller Bearing into the Transmission Housing .