3.2.7. Piston 1) Piston disassembling z Pull out the snap ring for piston pin and with a pair of snap ring pliers. z With a round bar, remove the piston pin. EA3M2029 z With a pair of pliers, remove the piston rings. z Clean the piston thoroughly. EFM2051I 2) Inspection & measurement of the piston z With naked eyes, inspect the piston for any wear, crack and scratch and particularly inspect carefully at the z With the outside micrometer, ring grooves for any wear. measure the piston’s outside diameter the measuring position is 71.5 mm 71.5 mm from the piston lower end, and the direction of measurement must be perpendicular to the piston EA3M2045 pin direction.
z By comparing the measured value of the piston outside diameter with the cylinder liner inside diameter, the bigger clearance is replaced. Inspection - 75 - Standard 127.739 ~ 127.757 mm