A8 Quattro Sedan V8-4.2L (AUX) (2001)
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Install measuring tools.
A - Dial indicator extension, approximately 30 mm long
B - Bolt M8 x 45
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Place dial indicator extension in center of measuring plate.
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Set dial indicator (3 mm measuring range) to "O" with 1 mm pre-load.
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Lift differential, read play on dial indicator and record.
Example: 1.60 mm
Determining "S total" (S1 - S2)
"S total" = measurement + pre-load
Example:
Pre-load (constant value) 0.30 mm
Measurement (example) + 1.60 mm
"S total" = 1.90 mm
The total shim thickness determined (1.90 mm in the example) is divided between the two outer tapered roller bearing races as follows:
Example:
S total 1.90 mmm
S2* (housing side) default value 1.00 mm
S1 (cover side) variable value 0.90 mm