Left flange shaft seal, replacing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 Audi A4, 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Extractor lever VW 681
- Driver 2062
Work procedure
- Transmission installed
- Remove left flange shaft → 39 - FINAL DRIVE, DIFFERENTIAL .
- Pull out flange shaft seal using Extractor lever VW 681.
NOTE:
- Do not damage shaft seal seating surfaces.
Setup of flange shaft with polygon bearing
- Flange shaft
- Needle bearing (polygon bearing)
- Spacer ring
- Circlip
- Not installed
NOTE:
- If the polygon bearings do not run smoothly with the flange shaft removed, this does indicate that the bearings are faulty. A test for noisy bearings can only be performed with the bearings installed.
- Watch for damage to the polygon bearings (e.g. cracks in bearing outer ring)
- If polygon bearings are damaged, flange shaft must be replaced.
- Moisten outer circumference and shaft seal lip with axle oil.
- Installation position: Open side of shaft seal faces transmission.
Fig 5: Driving In New Sealing Ring For Left Flange Shaft Uniformly Using Driver Below Surface Of Cover
- Drive in new left flange shaft seal uniformly with Driver 2062.
- Production drive-in depth 5.5 mm below cover surface.
- If re-using the used flange shaft, repair drive-in depth is 6.5 mm.
NOTE:
- Do not angle shaft seal when driving in.
- Install left flange shaft → 39 - FINAL DRIVE, DIFFERENTIAL .
- Check gear oil level in front final drive → 39 - FINAL DRIVE, DIFFERENTIAL .