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• Remove piston rings
• Check if the piston rings are damaged or its
grooves are worn.
• Place piston rings into cylinder below 20 mm of
cylinder top. Keep the piston rings horizontal in
cylinder, push the rings with piston.
• Measure ring end gap.
• Service Limit: Top ring: 0.50 mm
2nd ring: 0.65 mm
• Measure the outer diameter of piston pin.
• Service Limit: 19.96 mm
• Measure the inner diameter of connecting rod
small end.
• Service Limit: 20.065 mm
• Measure the inner diameter of piston pin hole.
• Service Limit: 20.02 mm
• Calculate clearance between piston pin and
its hole.
• Service Limit: 0.02 mm
CAUTION
• The measurement position is 8 mm distance from
piston bottom side, and 90° to piston pin.
• Measure piston outer diameter.
• Service limit: 85.850 mm
• Compare measured value with service limit to
calculate the clearance between piston & cylinder.
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