4-3
CRANKSHAFT
The crankshaft is a forged carbon steel, and the
crank pin
is
induction-hardened. The PTO end
of
the shaft has a crankshaft gear which is pressed
into position. (See
Fig.
4-3.)
CRANKSHAFT
GEAR
Fig.
4-3
44
CONNECTING
ROD
AND PISTON
The connecting rod
is
a forged aluminum alloy,
and its large and small ends function as bearings.
The piston
is
an aluminum alloy casting, and
4-5
CAMSHAFT
The camshaft is a hollow shaped
and
made of
special cast iron with the camshaft gear casted
together.
A
centrifugal decompression lever is assembled
on
the camshaft. The lubrication oil
pump
is driven
by the groove
on
the end of the camshaft.
(See Fig.
4-5.)
Fig.
4-4
Fig.
4-5
r,
-4-
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