S4 V8-4.2L (BHF) (2004)
Crankshaft Main Bearing: Specifications
Main Bearing
Basic dimension of main crankshaft journals .......................................................................................................................................... 65 mm diameter
Repair stage of main crankshaft journals ............................................................................................................................................ 64.75 mm diameter
Main Bearing Torque (Guide Frame)
Installing guide frame
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Replace bolts - 1 to 20 -.
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Tighten bolts for guide frame as follows:
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Tighten bolts - 1 to 10 - using torque wrench to 30 Nm.
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Tighten bolts - 11 to 20 - using torque wrench to 20 Nm.
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Tighten bolts - 1 to 10 - using torque wrench to 50 Nm.
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Tighten bolts - 11 to 20 - using torque wrench to 30 Nm.
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Tighten bolts - 1 to 10 - 90° (1/4 additional turn) using a rigid wrench.
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Tighten bolts - 11 to 20 - 90° (1/4 additional turn) using a rigid wrench.
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Tighten bolts for sealing surfaces of cylinder block/guide frame - dark hatching in illustration - to 9 Nm in diagonal sequence.