TT Quattro Roadster V6-3.2L (BHE) (2005)
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Only replace as a set
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Mark cylinder allocation -B-
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Installed position: Mark -A- faces toward shallow side of piston (shallow side of piston crown faces cylinder block center)
5 - Circlip
6 - Piston pin
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If difficult to move, heat piston to 60 degrees C
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Remove and install using drift VW 222 A
7 - Piston
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Mark installed position to connecting rod and cylinder allocation
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Shallow side of piston crown faces center of cylinder block
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Piston and cylinder dimensions
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Install using T10147
8 - Piston rings
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Compression rings
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Offset gaps by 120 degrees
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Remove and install using piston ring pliers
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"TOP" must face toward piston crown
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Checking ring gap
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Checking ring to groove clearance
9 - Piston ring
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Oil scraping ring
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3-part
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Install upper steel ring so gap is offset by 120 degrees to neighboring compression ring
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Offset all gaps of oil scraping ring components to each other
Checking piston ring gap
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Insert ring at right angle to cylinder wall from above and push down into lower cylinder opening approx. 15 mm from bottom of cylinder. To do
so, use a piston without rings.
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Use a feeler gauge to measure.