RAM 2500 Van V8-5.2L CNG VIN T (1999)
Piston Ring: Service and Repair
1. Measurement of end gaps:
a. Measure piston ring gap 2 inches from bottom of cylinder bore. An inverted piston can be used to push the rings down to ensure positioning
rings squarely in the cylinder bore before measuring.
Second Compression Ring Identification (Typical)
Compression Ring Chamfer Location (Typical
b. Insert feeler gauge in the gap. The top compression ring gap should be between 0.254-0.508 mm (0.010-0.020 inch). The second compression
ring gap should be between 0.508-0.762 mm (0.020-0.030 inch). The oil ring gap should be 0.254-1.270 mm (0.010-0.050 inch).
Top Compression Ring Identification (Typical)
