Checking piston ring gap

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Fig 1: Checking Piston Ring Gap

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Insert piston ring into cylinder bore at a right angle from above, approx. 15 mm from cylinder edge.

Piston ring dimensions in mm	New	Wear limit
1. Compression ring	0.20 to 0.40	1.0
2. Compression ring	0.20 to 0.40	1.0
Oil scraping ring	0.25 to 0.50	1.0