RS 4 Quattro Sedan V8-4.2L (BNS) (2007)
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Connecting Rod: Overhaul
Piston and Connecting Rod, Assembly Overview
Piston and connecting rod, assembly overview
Note:
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Oil injector jet for piston cooling
1 - Connecting rod bolt, 40 Nm plus an additional 90° (1/4 turn)
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Replace
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Lubricate threads and contact surface
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Tighten to 40 Nm to measure radial play, do not turn further
2 - Connecting rod bearing cap
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Do not interchange
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Mark affiliation to cylinder with paint
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Installation position of connecting rod pairs
3 - Bearing shells
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Check that retaining tabs are secured
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Do not interchange used bearing shells (mark, but not on running surface)
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To measure radial play, tighten bolt - 1 - to 40 Nm but no further
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Over-sized bearings are available for reworked crankshaft connecting rod journals
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Insert bearing shells with correct color marking
4 - Connecting rod
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Only replace as set
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Mark affiliation to cylinder with paint
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Installation position of connecting rod pairs
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Axial play for each new connecting rod pair: 0.20 to 0.27 mm
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Axial play wear limit: 0.30 mm
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Insert connecting rod with correct identification letter
