Camshaft, Measuring Radial Clearance

WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Plastigage

Procedure

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

-- Mark the assignment of the roller rocker lever for installation later.

-- Remove the roller rocker lever and place it on a clean surface.

-- 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.

-- Reinstall the camshafts, mount the guide frame and tighten the bolts to the final tightening specification, refer to Figure. Be careful not to rotate the camshafts while doing so.

-- Remove the bearing bracket and camshafts.

-- Compare width of Plastigage with calibrated scale.

Radial clearance:

For 24 mm diameter bearings: 0.024 to 0.066 mm
For 36 mm diameter bearings: 0.032 to 0.078 mm.