Radial clearance, measuring
WARNING: This page is about a different car, the 2006 Audi A8, 2005 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Plastigage
NOTE:
- Do not interchange used bearings
- Bearing shells that are worn down to the nickel layer must be replaced.
- Remove main bearing cap. Clean bearing cap and journal.
- Place Plastigage over entire width of bearing journal or into bearing shells.
- Plastigage must rest in center of bearing shell.
- Install main bearing cap and tighten to 30 Nm. Do not turn crankshaft.
- Remove main bearing cap again.
- Compare width of Plastigage with calibrated scale.
- Read value:
| New clearance | Wear limit |
|---|---|
| 0.018 to 0.045 mm | 0.08 mm |