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Home >> Jeep >> 2008 >> Commander Base, 3.7 K, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (5.7L Engine (Service Information)) >> Engine Block >> Rings-Piston >> Standard Procedure >> Piston Ring Fitting >> Piston Ring Side Clearance

Piston Ring Side Clearance

WARNING: This page is about a different variant/trim than selected.
NOTE: Make sure the piston ring grooves are clean and free of nicks and burrs.
Fig 1: Measuring Piston Ring Side Clearance
GC0003993Courtesy of CHRYSLER LLC
1 - FEELER GAUGE
  1. Measure the ring side clearance as shown make sure the feeler gauge (1) fits snugly between the ring land and the ring. Replace any ring not within specification.
  2. Rotate the ring around the piston, the ring must rotate in the groove with out binding.
PISTON RING SPECIFICATION CHART

Ring Position  Ring/Groove  Maximum 
Side Clearance  Clearance 
Upper Ring 0.02-0.07mm 0.11mm
(0.0008- 0.0028 in.) (0.004 in.)
Intermediate Ring 0.02-0.06 mm 0.10mm
(0.0008-0.0023 in.) (0.004 in.)
Ring Position  Ring Gap  Wear Limit 
Upper Ring 0.23-0.38mm 0.43mm
- (0.0090-0.0149 in.) (0.017 in.)
Intermediate Ring 0.35-0.60mm 0.74mm
- (0.0137-0.0236 in.) (0.029 in.)
Oil Control Ring 0.015-0.66mm 0.76mm
(Steel Rail) (0.0059- 0.0259 in.) (0.030 in.)