A6 Quattro Sedan V6-3.0L (AVK) (2002)
6. Piston pins
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For difficulty of movement, warm pistons to approximately 60°C
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Use VW222a pilot drift to remove and install
7. Pistons
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Installed position and allocation piston/cylinder, Refer to Fig. 5.
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Arrow on piston head points to belt pulley side
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Checking, Refer to Fig. 3.
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Install with piston ring tension strip
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Piston and cylinder measurements, Refer to Piston, Engine, Service and Repair.
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Checking cylinder bore, Refer to Fig. 4.
8. Piston rings
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Shift by 120°
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Use piston ring pliers to remove and install
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Marking or identification "TOP" i.e. marked side must face toward the piston head
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Check end play, Refer to Fig. 1.
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Checking height play, Refer to Fig. 2.
Fig. 1 Piston ring-Checking end gap
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Insert ring at a right angle to cylinder wall from above to lower cylinder opening approximately 15 mm cylinder edge. When inserting, use pistons
without rings