12. Others/driving system
199
Piston
Disassembly of Piston
1. Pull out the snap ring for piston pin and with a pair
of snap ring pliers.
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2. With a round bar, remove the piston pin.
3. With a pair of pliers, remove the piston rings.
DV2213155A
4. Clean the piston thoroughly.
Assembly of Piston
1. Heat the piston at the piston heater for about 5
minutes (120 ~ 150°C).
DV2213156A
2. By aligning the piston pin hole with the pin hole of
connecting rod’s smaaler end, insert the oil coat
ed
pi
ston pin.
3. With the snap ring plier, inser the snap rings of t
he
pi
ston pin.
4. With confirming the upper side indication of pist
on
r
ing, after assembling the ring in the piston ring
groove, inspect if the movement of ring is smooth.
Piston Inspection
1. Visual inspection
1) Visually check the piston for crack, scratch, wear, etc.
Specially, check the wear status of the ring groove.
2. Piston outside diameter inspection
1) With the outside micrometer, measure the outside
diameter.
2) The measuring position is 71.5mm from the pist
on
l
ower end, and the direction of measurement must
be
per
pendicular to the piston pin direction.
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