- 45-
ENGINE
- 145 -
1
、
CHECK
1).Checking the cylinder and piston
• cylin er an piston walls ertical
scratches
Rebore or replace the cylinder
and the piston.
2).Checking the piston rings
• piston ring
Insert in cylin er piston ring will e
,and
measure the end gap.)
NOTE
Check whether the piston and the piston
groove is cracked and abraded.
3).Checking the piston pin
• piston pin
Blue discoloration/grooves
Replace, then
check the lubrication system.
2
、
MEASURE
• At the top the mi l
e and the bottom of the
piston stroke.
NOTE
Measure the bore diameter at directions of
right-angle intersection.
Repairing limit value
Out of roundness:0.10mm
Taper:0.10mm
• The e ternal iameter mm a o e the ottom
of the piston skirt.
NOTE
Repair limit on the clearance between the
piston and cylinder.
Repairing limit value
0.10mm
