Connecting Rod, 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 connecting rod bearing cap. Clean the bearing cap and journal.

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

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

-- Install the connecting rod bearing cap.

-- Compare width of Plastigage with calibrated scale.

Radial clearance:

New: 0.015 to 0.062 mm.
Wear limit: 0.12 mm.

-- Replace connecting rod bolts.