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Engine
•
Clean off lime scales on the cylinder
cooling slots.
•
Measure the cylinder bore at a dis-
tance of 10 - 43 - 90 mm (0.39 - 1.69 -
3.54 in) from the head coupling sur-
face; the highest value should be
considered to estimate wear limits.
Cylinder bore (C): 106.000 mm (4.1732 in) C=
D1 or D2 max
Replace the cylinder, the piston and the piston ring
all together if not complying with specifications.
Checking the piston
•
Measure the piston skirt diameter "P"
with a micrometer (a=10 mm (0.39 in)
from the piston lower border).
•
Calculate the clearance between pis-
ton and cylinder as follows:
Piston diameter (P): 106.000 mm (4.1732 in)
Piston - cylinder clearance C = C - P
Piston - cylinder clearance: 0.085 mm (0.00335
in)
•
Replace the cylinder, the piston and
the piston ring all together if not com-
plying with specifications.
PISTON RINGS
•
Clean off any carbon deposits from the
grooves in the piston rings and from the
rings themselves.
•
Measure the piston ring side clearance
and replace the piston and the piston
rings all together if not complying with
specifications.
Piston ring side clearance:
ENG - 344
Caponord 1200 - Caponord 1200 Rally
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