RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
Crankshaft: Testing and Inspection
Radial Clearance, Measuring
Radial clearance, measuring
Special tools, testers and auxiliary items required
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Plastigage
Work procedure
Note:
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Do not interchange used bearings
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Bearing shells that are worn down to the nickel layer must be replaced.
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Remove guide frame and clean journals.
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Place Plastigage over entire width of bearing journal or into bearing shells.
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Plastigage must rest in center of bearing shell.
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Install guide frame and tighten to 30 Nm. Do not turn crankshaft.
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Remove guide frame again.
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Compare width of Plastigage with measuring scale.
Radial clearance:
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New: 0.017 to 0.044 mm.
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Wear limit: 0.08 mm.