RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
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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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Radial clearance, measuring
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Insert connecting rod with correct identification letter
5 - Piston pin
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If tight, heat piston to 60 degrees C
6 - Circlip
7 - Piston
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Installation position of pistons
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Piston and cylinder dimension, piston allocation to cylinder bore
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Checking
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Install with piston ring compressor
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Measuring cylinder bore
8 - Piston rings
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Offset gaps by 120 degrees
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Use piston ring pliers for removal and installation
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"TOP" marking or inscribed side must point to piston head
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Gap, measuring
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Measuring side clearance
Piston ring end gap, measuring
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Slide piston ring down from above at a right angle to cylinder wall until it is approx. 15 mm from bottom edge of cylinder.
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When sliding in, use a piston without piston rings.
