Contents Section: Mechanical All sections

Piston Rings Cadillac DeVille Concours I final

Mechanical ~112 words
  1. Each piston has 2 compression rings and a side-seal type oil ring that incorporates a steel expander and 2 identical chrome-plated steel rails. Top compression ring is molybdenum-filled steel. Second compression ring is coated cast iron.
  2. When replacing piston rings, install only ring sets that have molybdenum-filled upper compression ring and multi-piece oil rings. Top compression ring may be installed with either side up. Second compression ring has a locating dimple, identifying top side.
  3. If piston ring end gap and side clearance are not within specification, replace rings and/or piston. See «PISTONS, PINS & RINGS»(ref-1392-S06818345102000031300000) table under ENGINE SPECIFICATIONS. Ensure ring end gaps are correctly spaced around piston. (Схема №33)