kymco mo movie125150 服务手册
8
. CYLINDER/PISTON
8-4
Measure the piston pin O.D.
Service Limit: 14.96mm replace if below
Service Limit: 14.96mm replace if below
Measure the piston O.D.
Service Limit: 52.3mm replace if below
Measure the piston-to-piston pin clearance.
Service Limit: 0.02mm replace if over
Measure the piston-to-piston pin clearance.
Service Limit: 0.02mm replace if over
CYLINDER INSPECTION
Inspect the cylinder bore for wear or damage.
Inspect the cylinder bore for wear or damage.
Measure the cylinder I.D. at three levels of
top, middle and bottom at 90° to the piston
pin (in both X and Y directions).
Service Limit: 52.50mm repair or replace if
Service Limit: 52.50mm repair or replace if
below
Measure the cylinder-to-piston clearance.
Service Limit: 0.1mm repair or replace if
Service Limit: 0.1mm repair or replace if
below
The true roundness is the difference between
the values measured in X and Y directions.
The cylindricity (difference between the
values measured at the three levels) is subject
to the maximum value calculated.
Service Limits:
True Roundness: 0.05mm repair or replace
Service Limits:
True Roundness: 0.05mm repair or replace
if over
Cylindricity: 0.05mm repair or replace if over
Take measurement at 9mm from the
bottom and 90° to the piston pin hole.
＊
Middle
Bottom
Top