CONNECTING RODS, PISTONS, RINGS & SLEEVES
Place micrometer over gauge pins and take
reading across the diameter of piston
(widest point through piston center) [Refer
to Figure 20]. Record measurement.
Refer to Service Specification Chart for
piston ring groove widths to determine if
piston may continue to be used in service.
If measurement over gauge pins is not with
in specifications, indicating excessive piston
groove wear, replace old pistons and rings
Figure 17. - Piston Identification
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