S4 Quattro Cabriolet V8-4.2L (BHF) (2008)
Connecting Rod: Testing and Inspection
Connecting Rod, Measuring Radial Clearance
Connecting Rod, Measuring Radial Clearance
Special tools, testers and auxiliary items required
‹› Plastigage
Test Sequence
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Remove connecting rod bearing caps.
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Clean bearing caps and journals
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Place Plastigage over entire width of bearing journal or into bearing shells.
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Install connecting rod bearing cap and tighten to 30 Nm. Do not turn crankshaft.
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Remove connecting rod bearing caps again.
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Compare width of Plastigage with measuring scale:
‹› Radial clearance new: 0.028 to 0.077 mm.
‹› Radial clearance wear limit: 0.12 mm.
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Replace bolts for connecting rod bearings.