Connecting Rods, Checking 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 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 the old bolts to the final tightening specification -item 1- OVERVIEW - PISTON AND CONNECTING ROD => List Item:Bolts. Do not turn the crankshaft when doing this.
-- Install the connecting rod bearing cap.
-- Compare width of Plastigage with calibrated scale.
Radial clearance:
- New: 0.010 to 0.052 mm.
- Wear limit: 0.120 mm.
-- Replace connecting rod bolts.