Beetle L4-1.9L DSL Turbo (ALH) (1998)
Piston: Service and Repair
Pistons And Connecting Rods, Disassembling And Assembling
1. Piston ring
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Offset ring gaps 120°
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Remove and install using piston ring pliers
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"TOP" faces towards crown
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Ring gap, checking: go to Fig. 1
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Ring to groove clearance checking: go to Fig. 2
2. Piston
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Mark installation position and cylinder number
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Arrow on piston crown points to: pulley end
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Install using piston ring tool
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If any cracks on piston skirt, replace piston
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Piston projection at TDC, checking, Refer to Piston, Engine, Testing and Inspection
3. Piston pin
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If difficult to remove, heat piston to 60°C
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Remove and install using VW 222A
4. Circlip
5. Connecting rod
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Only replace as a set
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Mark cylinder number -A-
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Installed position: Marking -B- faces pulley end
6. Fitted pin
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Pin must seat securely in connecting rod, not in bearing cap
7. Bearing shell
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Note installed position
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Do not interchange used bearing shells
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Make sure retaining lugs fit tightly in recesses
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Axial clearance Wear limit: 0. 37 mm
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Check radial clearance with Plastigage: Wear limit: 0. 08 mm Do not rotate crankshaft while checking.
8. Cylinder block