Jetta V6-2.8L (BDF) (2002)
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Piston: Service and Repair
Piston and connecting rod, disassembling and assembling
1. Piston rings
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Offset gaps by 120°
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Use piston ring pliers to remove and install
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"TOP" faces towards piston crown
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Checking ring gap
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Checking ring to groove clearance
2. Piston
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Checking, Refer to Fig. 3
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Mark installation position to connecting rod and cylinder
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Flatter side of piston crown faces toward center of cylinder block
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Install with piston installation tool (funnel) 3278, Refer to Fig. 5
3. Snap ring
4. Conrad
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Only replace as a set
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Mark position to cylinder -B
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Installation position: Marks -A- must be aligned above one another
5. Bearing shell
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Observe installation position
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Do not interchange used bearing shells
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Lugs on bearing shells must fit tightly in recesses
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Axial clearance, New: 0.05 0.35 mm, Wear limit: 0.40 mm
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Check radial clearance with Plastigage: New: 0.02 0.07 mm, Wear limit: 0.10 mm. Do not turn crankshaft when checking radial clearance
6. Conrad bearing cap
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Mark position to cylinder -B
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Installation position: Marks -A- must be aligned above one another
7. 30 Nm plus additional 1/4 turn (90°) further
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Replace
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Oil thread and contact surface
