A3 Quattro V6-3.2L (BUB) (2008)
Piston: Locations
Piston and Connecting Rod Assembly Overview
1 -
Connecting rod bolt - 30 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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Use old bolt to measure radial play
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Tighten to 30 Nm to measure radial play, do not turn further
2 -
Connecting rod bearing cap
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Affiliation to cylinder mark - B.
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Installation position: Markings -A- must align
3 -
Bearing shells
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Do not interchange used bearing shells (mark)
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Bearing shell retaining tabs must be firmly seated in the notches
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Installation position: Retaining tabs of both bearing shells lie on the same side of the connecting rod
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Axial play new: 0.05 to 0.31 mm; wear limit: 0.40 mm
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Measure radial clearance with Plastigage(R)
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Do not turn crankshaft when measuring radial play
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Radial clearance, new: 0.02 to 0.07 mm; wear limit: 0.10 mm
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Replacement parts are color coded "yellow" for lower and "red" for upper
4 -
Connecting rod
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With oil hole for piston pin lubrication
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Only replace as set
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Affiliation to cylinder mark - B.
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Installation position: Mark -A- faces toward the shallow side of the piston (the shallow side of the piston head faces the cylinder block center)
5 -
Circlip
6 -
Piston pin