S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Connecting Rod: Testing and Inspection
Connecting Rod, Measuring Radial Clearance
Special tools, testers and auxiliary items required
‹› Plastigage
Procedure
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Remove connecting rod bearing cap.
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Clean the bearing cap and journal.
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Place the Plastigage over the entire width of the bearing journal or into the bearing shells.
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Install connecting rod bearing cap and tighten to 60 Nm. Do not turn crankshaft.
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Reinstall connecting rod cover.
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Compare width of Plastigage with calibrated scale.
Radial clearance:
‹› New: 0.020 to 0.069 mm.
‹› Wear limit: 0.120 mm.
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Replace connecting rod bolts.