Crankshaft, Measuring Radial Clearance

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Audi S7, 2018 Audi RS 7, 2017 Audi S7, 2017 Audi RS 7, and 2016 Audi S7. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools And Workshop Equipment Required

Plastigauge^®

NOTE:

Use old bolts to measure radial play.

-- Remove the guide frame and clean the bearing journals.

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

Plastigauge^® must rest in center of bearing shell.

-- Position the guide frame and tighten it with an additional turn; do not turn the crankshaft. Refer to figure in Guide Frame Tightening Specifications & Sequence .

-- Install the guide frame.

-- Compare width of Plastigauge^® with calibrated scale.

Radial Clearance:

New S6/S7: 0.017 to 0.044 mm.
New RS6/RS7: 0.017 to 0.033 mm.
Wear limit: 0.08 mm.

-- Replace bolts for the final assembly.