Calculating average backlash
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.
Example:
| 1st measurement | 0.49 mm | |
| + | 2nd measurement | 0.48 mm |
| + | 3rd measurement | 0.50 mm |
| + | 4th measurement | 0.49 mm |
| Total | 1.96 mm | |
Center backlash = 1.96 mm: 4 = 0.49 mm
If the individual measurements differ by more than 0.06 mm from each other, the installation of the ring gear or the final drive set itself is not correct. Recheck the installation, and if necessary replace ring gear and pinion.