Camshaft, 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

-- Removal cam follower, refer to LEFT CYLINDER HEAD CAMSHAFT, REMOVING AND INSTALLING .

-- Clean the bearing and the bearing journals.

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

Plastigage must rest in center of bearing.

-- Re-install the camshafts, mount the bearing bracket and tighten to 10 Nm, refer to Figure, do not turn the camshafts while doing this.

-- Remove the bearing bracket and camshafts.

-- Compare width of Plastigage with calibrated scale.

Radial clearance:

New: 0.035 to 0.085 mm.
Wear limit: 0.100 mm.