Crankshaft, Measuring Radial Clearance

WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Plastigage

Procedure

NOTE:

Marked the used bearing for installation later, but not on the running surface.

Replace bearing shells worn down to the base layer.

-- Remove the guide frame and clean the bearing journals.

-- Place the Plastigage over the entire width of the bearing journal or into the bearing shells.

Plastigage must rest in center of bearing shell.

-- Position the bearing bracket and tighten it to 30 Nm; do not turn the crankshaft.

-- Install the guide frame.

-- Compare width of Plastigage with calibrated scale.

Radial clearance:

New: 0.018 to 0.045 mm.
Wear limit: 0.100 mm.