7. Cylinder / Piston
7-5
Measure the outer diameter of piston pin.
Service Limit: 16.96 mm
Measure the inner diameter of connecting rod
small end.
Service Limit: 17.064 mm
Measure the inner diameter of piston pin hole.
Service Limit: 17.02 mm
Calculate clearance between piston pin and its
hole.
Service Limit: 0.02 mm
Measure the piston outer diameter.
Caution
y The measurement position is 10 mm distance
from piston bottom side, and 90° to piston pin.
Service limit：
LM25W5: 70.380 mm
LM30W: 72.380 mm
Compare measured value with service limit to
calculate the clearance between piston and
cylinder.
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