Camshaft, Measuring Radial Clearance

WARNING: This page is about a different car, the 2010 Audi Q7, 2009 Audi Q7, 2008 Audi Q7, and 2007 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

Proceed as follows:

-- Remove the camshafts, refer to CAMSHAFTS, REMOVING AND INSTALLING .

-- Clean bearing cap and bearing journals.

-- Removal cam follower, refer to CAMSHAFTS, REMOVING AND INSTALLING .

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

Plastigage must rest in center of bearing.

-- Position the bearing cap and tighten the old nuts, refer to -Item 10- VALVE TRAIN OVERVIEW without turning the crankshaft.

-- Reinstall bearing cap.

-- Compare width of Plastigage with calibrated scale.

Radial clearance:

Wear limit: 0.1 mm.