A Series Diesel Engine Base Engine Components 199
Use a new piston ring to measure the clearance in the
ring groove.
Limits
Minimum Clearance
Top groove: 2.006 mm [0.079 in]
Oil Control: 3.002mm [0.1102 in]
Measure the pin bore
Diameter
30.008 mm [1.1814 in]
Worn Limit: 29.9 mm [1.177 in]
Inspect the piston pin for nicks, gouges and excessive
wear.
Measure the pin diameter.
Diameter
30.0 mm [1.181 in]
Caution : The I-beam section cannot have dents or
other damage. Damage to this part can
cause stress risers which will progress to
breakage.
Inspect the rod for damage and wear.
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