DAELIM BESDI 125 - SERVICE, Service Manual

Page: 110 / 193

10-4
CYLINDER / PISTON
1
2
3
Insert the piston ring into the top of the cylinder
squarely, using the piston.
Measure the end gap using a feeler gauge. Replace the
ring if the service limit is exceeded.
NOTE
Always replace piston ring as a set.
SERVICE LIMIT : TOP / SECOND : 0.50 mm
OIL RING (SIDE RAIL) : 1.10 mm
TOOL : FEELER GAUGE
Measure and record the piston outer diameter 90 to the
piston pin bore and at the point specified (10mm), near
the bottom of the piston skirt.
Replace the piston if the service limit is exceeded.
SERVICE LIMIT : 52.30 mm
PISTON PIN INSPECTION
Measure the piston pin bore inner diameter in an X and
Y axis. Take the maximum reading to determine the
inner diameter.
Replace the piston if the inner diameter is over the
service limit.
SERVICE LIMIT : 15.04 mm
Measure the piston pin outer diameter at three points.
Replace the piston pin if the service limit is exceeded.
SERVICE LIMIT : 14.960 mm
Calculate the piston pin-to-pin bore clearance by
subtracting the piston pin outer diameter from the pin
bore inner diameter.
SERVICE LIMIT : 0.020 mm
SMALL END BEARING SURFACE INSPECTION
Measure the inner dismeter of the connecting rod small
end.
SERVICE LIMIT : 15.037 mm
Calculate the connecting rod small end-to-piston pin
clearance.
SERVICE LIMIT : 0.02 mm