•
Noticing the direction of the piston, make
the longer side (machined with key
groove on the bearing) of the connecting
rod big end and the mark of ‘ ’
impressed on the inside of the piston
face each other in opposite directions.
On the piston head surface, the longer
side of the connecting rod big end is in
opposite direction from the valve seat
surface.
•
Install the snap rings and check to see
that it is securely assembled.
•
Install the piston ring in the piston using
piston ring pliers.
•
Identify the mark “Y” or “TOP” on the
ring end to prevent the top and bottom of
the piston ring from being interchanged
and make the marked portion face
upward. (The surface marked as “Y”
is upper surface.)
•
Adjust the angle among individual piston
ring gaps to 90
˚
and fit a piston
assembling jig onto the piston, Use care
not to match the ring gaps with the pin
direction.
•
Install the bearing by aligning it with the
connecting rod key groove and apply oil
to the bearing and piston.
•
Position the valve seating surface toward
the tappet hole and insert the piston with
hand.
Caution :
Use care not to damage the cylinder liner
and piston, and slightly lift and insert the
piston into the cylinder so that the ring
may not be damaged by the fillet of the
liner.
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