Jetta L4-1.9L DSL Turbo (AAZ) (1997)
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Piston Ring: Testing and Inspection
PISTON RING END GAP
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Insert bare ring into cylinder.
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Push down squarely on piston ring until it is approx. 15 mm from bottom edge of cylinder.
^
New:
1st Compression Ring: 0.06-0.09 mm (0.0024-0.0036 inch).
2nd Compression Ring: 0.05-0.08 mm (0.0020-0.0032 inch).
Oil Scraper Ring: 0.03-0.06 mm (0.0012-0.0024 inch).
^
Wear Limit:
1st Compression Ring: 0.25 mm (0.0098 inch).
2nd Compression Ring: 0.25 mm (0.0098 inch).
Oil Scraper Ring: 0.15 mm (0.0059 inch).
RING TO GROOVE CLEARANCE
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Clean piston ring groove before checking
^
New:
1st Compression Ring: 0.06-0.09 (0.0024-0.0036 inch).
2nd Compression Ring: 0.05-0.08 (0.0020-0.0032 inch).
Oil Scraper Ring: 0.03-0.06 (0.0012-0.0024 inch).
^
Wear Limit:
1st Compression Ring: 0.25 (0.0098 inch).
2nd Compression Ring: 0.25 (0.0098 inch).
Oil Scraper Ring: 0.15 (0.0059 inch).
