Engine Components: Cylinder; Cylinder Removal; Cylinder Inner Wall Wear Inspection - Carter Talon 150 FX Series Service Manual

ENGINE COMPONENTS INSPECTION AND SERVICING
ENGINE COMPONENTS AND CRANK CONNECTING ROD
MECHANISM INSPECTION AND SERVICING

ENGINE COMPONENTS: CYLINDER

CYLINDER REMOVAL

The removal can be done on the vehicle body.
• Remove cylinder head.
• Remove cylinder.
• Remove cylinder gasket, bolts
• Erase cylinder gasket.
Caution!
Do not damage the cylinder area. Make sure not to drop anything,
including cylinder gasker material into the crankcase.

CYLINDER INNER WALL WEAR INSPECTION

Use a bore diameter dial gauge to measure the degree of wear.
The measure point is divided into three sectional planes in the axial direction: upper, middle and
lower; measure every plane each time on the mutually perpendicular directions (X, Y), the mea-
sured least dimension is the cylinder bore; at the most upper position measured is the largest
diameter, and the lowest position measured is the smallest diameter, their difference is the cylin-
dricity of the cylinder. At the same cross section, measured the difference of diameter between two
points mutually perpendicular; which is the circularity of the cylinder.
In order to make the measuring point perpendicular with the bore axis of the cyl-
inder, and to ensure the precision of the measurement, the bar of the gauge can
be slightly swung in the direction of the gauge bar, and take the smallest reading
number as the result.
In the situation without a dial gauge, a feeler gauge can be used to make relativity measurement,
that is to put a new piston into the cylinder, and use the feeler gauge to measure the gap between
the piston skirt and the cylinder wall, then figure out the abrasion loss of the cylinder. If the circu-
larity of the cylinder exceeds the limit, then a cylinder reboring machine should be used to rebore
the cylinder, and enlarge its diameter by 0.5mm or 1.00mm, then fit the piston and piston ring
which size are also enlarged. If the wear is too severe and cannot be reworked, then a new cylin-
der should be installed.
ENGINE
Cylinder bore 57.4mm
Cylindricity 0.05mm
Circularity 0.05mm
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