9.2.7. Piston
1) Piston disassembling
•
Pull out the snap ring for piston pin
and with a pair of snap ring pliers.
•
With a round bar, remove the piston
pin.
•
With a pair of pliers, remove the piston
rings.
•
Clean the piston thoroughly.
2) Inspection & measurement of the
piston
•
With naked eyes, inspect the piston
for any wear, crack and scratch and
particularly inspect carefully at the ring
grooves for any wear.
•
With the outside micrometer, measure
the piston’s outside
diameter the
measuring position is 71.5mm from the
piston lower end, and the direction of
measurement must be perpendicular
to the piston pin direction.
•
By comparing the measured value of
the piston outside diameter with the
cylinder liner inside diameter, the
bigger clearance is replaced.
- 88 -
EFM2051I
Standard
127.739 ~ 127.757 mm
