Radial clearance, measuring
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 Audi S4, 2008 Audi S4, 2007 Audi S4, 2006 Audi S4, and 2005 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Plastigage
Work procedure
NOTE:
- Do not interchange used bearings
- Bearing shells that are worn down to the nickel layer must be replaced.
- Remove guide frame and clean journals.
- Place Plastigage over entire width of bearing journal or into bearing shells.
- Plastigage must rest in center of bearing shell.
- Install guide frame and tighten to 30 Nm. Do not turn crankshaft.
- Remove guide frame again.
- Compare width of Plastigage with measuring scale:
- Radial clearance, new: 0.010 to 0.039 mm.
- Radial clearance wear limit: 0.08 mm.