CLEARANCE (Dc-Dp) SERVICE LIMIT
0.035-0.065 mm 0.10 mm
(0.001379-0.002561 in.) (0.004 in.)
Cylinder to piston clearance
Cylinder diameter
Measure inside diameter (Dc) with an internal bore micrometer 25 mm (0.9842
in.) below the edge (distance “A”).
Piston diameter
Measure piston diameter (Dp) 7 mm (0.2755 in.) above skirt edge (distance “B”).
Clearance is calculated as follows = Dc-Dp.
Piston pin
The piston pin (1) must be perfectly smooth, with no signs of scoring, dents or
bluing due to overheating.
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