Connecting Rods, Checking Radial Clearance

WARNING: This page is about a different car, the 2022 Audi A6 Quattro and 2021 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Plastigauge^®

Procedure

-- Mark the installation position and which connecting rod bearing cap -1- belongs to which connecting rod -item 2- OVERVIEW - PISTONS AND CONNECTING ROD => List Item: Connecting Rod Bearing Cap.

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -arrows- and remove the connecting rod bearing cap.

Do not damage the cracked surfaces of the connecting rods and connecting rod bearing caps.

-- Clean the bearing cap and pin.

-- Place the Plastigauge^® over the entire width of the bearing journal or into the bearing shells.

-- Position the connecting rod bearing cap and fasten with the old bolts -item 1- OVERVIEW - PISTONS AND CONNECTING ROD => List Item: Bolts. Do not turn the crankshaft at the same time.

-- Remove the connecting rod bearing cap again.

-- Compare the width of the Plastigauge^® with the measuring scale.

Radial clearance

New: 0.02 to 0.06 mm.
Wear limit: 0.09 mm.

-- Replace the bolts for the final assembly.