SHERCO 2014 250 SEF-R, Руководство по ремонту

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•
Remove the cylinder head bolts (Be sure
to loosen them in the correct direction).
Black bolt N°1 on the picture is longer , 3
bolts are identical .
•
Remove the cylinder head.
•
Remove the head gasket and the
cylinder.
Motor top end:
Inspection of the cylinder for wear:
Measure the inside diameter of the cylinder
when it is cold.
•
Inspect the inside of the cylinder for any
scratches or other evidence of abnormal wear.
If the cylinder is badly damaged or worn it
should be replaced.
•
Since the cylinder does not wear in a
uniform manner measure in from side to side
and up and down as shown.
If the inside measurement of the cylinder
exceeds the tolerance limit it must be replaced.
(A)=10 mm
(B)=25 mm
Piston / cylinder clearance
To determine the piston / cylinder clearance as
accurately as possible it is sufficient to measure
the piston and the cylinder, and then calculate
the difference between the two values.
Measure the diameters as shown.
Piston / cylinder clearances
Standard 0.03 – 0.05 mm
Limit 0.10 mm
Standard 250 SEF-
Cylinder diameter (A)
Cylinder diameter (B)
Taper limit 0.05 mm
Out of round limit
Standard 300 SEF-
Cylinder diameter (A) = 83
Cylinder diameter (B) = 83.982~83
Taper limit 0.05 mm
Out of round limit 0.05 mm
Remove the cylinder head bolts (Be sure
to loosen them in the correct direction).
Black bolt N°1 on the picture is longer , 3
Remove the cylinder head.
Remove the head gasket and the
Inspection of the cylinder for wear:
Measure the inside diameter of the cylinder
Inspect the inside of the cylinder for any
scratches or other evidence of abnormal wear.
ylinder is badly damaged or worn it
Since the cylinder does not wear in a
uniform manner measure in from side to side
If the inside measurement of the cylinder
exceeds the tolerance limit it must be replaced.
To determine the piston / cylinder clearance as
accurately as possible it is sufficient to measure
the piston and the cylinder, and then calculate
the difference between the two values.
as shown.
4
14/75
-R:
Cylinder diameter (A) = 75.982±0.01 mm
Cylinder diameter (B) = 75.982~77.995 mm
0.05 mm
Out of round limit 0.05 mm
-R:
Cylinder diameter (A) = 83.982±0.01 mm
Cylinder diameter (B) = 83.982~83.995 mm
it 0.05 mm
Out of round limit 0.05 mm
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