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Piston Rings

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Measure piston ring end gap and side clearance. If measurement is not within specification, replace piston and/or rings as necessary. See PISTONS, PINS & RINGS  table under ENGINE SPECIFICATIONS. Install rings with mark on ring facing upward. Position ring end gaps around circumference of piston as shown. See Fig 1.

Fig 1: Positioning Piston Ring End Gaps
G95F27057Courtesy of GENERAL MOTORS CORP.
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