PISTON AND CYLINDER ASSEMBLY MAINTENANCE - CONTINUED
INSPECTION - CONTINUED
Hold new oil control ring (16) in oil control ring groove so that oil control ring face is flush with edge of piston dome.
Do not push ring to bottom of oil control ring groove. Insert feeler gage (27) between top of oil control ring and ring
land of oil control ring groove in piston dome. If clearance is greater than 0.004 in (0.11 mm), discard dome.
In order to prevent possible damage to equipment, DO NOT use crocus cloth to polish or refinish piston pin.
Piston pins cannot be polished or refinished.
If piston pin (11) shows signs of fretting, overheating or is worn to diameter of 1.77 in (44.96 mm), replace piston pin.
Replace connecting rod (12) if subjected to any of the following:
Visual damage (bent)
Previous bearing or related failure
Connecting rod bluing at top or bottom end
Fretting at split line between connecting rod and connecting rod cap
Excessive pound-in of rod bolt heads, nuts, and of piston pin bolt and spacer
Unusual cylinder wear patterns
Gouges, nicks or burrs on machined surface of connecting rods at piston pin end