kymco mo kxr 50 Instruction De Maintenance
8
. CYLINDER/PISTON
8-7
Mongoose/KXR 90/50
Measure the piston pin O.D.
Service Limit: 12.96mm replace if below
Service Limit: 12.96mm replace if below
Measure the piston O.D.
Service Limit: 46.9mm replace if below
Measure the piston-to-piston pin clearance.
Service Limit: 0.02mm replace if over
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).
Cylinder I.D.:
Service Limit: 47.1mm replace if over
Cylinder I.D.:
Service Limit: 47.1mm replace if over
Measure the cylinder-to-piston clearance.
Service Limit: 0.1mm repair or replace if
Service Limit: 0.1mm repair or replace if
over
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 10mm from the
bottom and 90° to the piston pin hole.
°Ø
4mm