Adjusting final drive sets; identification
WARNING: This page is about a different car, the 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
1 - "0937" indicates Oerlikon final drive set with a ratio of 37 : 9.
2 - Pairing number (312) of final drive set
3 - Deviation (tolerance) "r" based on the test machine master gauge used in production. The deviation "r" is always given in 1/100 mm. Example: "25" means r = 0.25 mm
Ro - Length of test machine master gauge used.
Ro - Ring gear diameter 170 mm = 54.95 mm
Ro - Ring gear diameter 180 mm = 59.65 mm
R - Actual dimension between ring gear and face of drive pinion at point with quietest running for this gear set
Vo - Hypoid offset