User Manual
hole
on
the bushing should
be
right aligned
t~
the
oil
gathering hole at the top of
connecting
rod
small end, to lubricate piston
pin
and
bushing. Connecting
rod
bolts
are
self - locked by friction force.
The
mass difference of connecting
rod
for one
same diesel engine
is
less than 20g,
and
that of piston
and
connecting
rod
assembly
for
one same diesel engine
is
not bigger than
30g.
The
connecting
rod
bearing
is
usually made of thin steel - backed aluminum alloy
material,
so
it cant
be
lapped.
When
we
assembling the connecting rod, the short side
on
the 45° inclined face
should
be
at the same side with the groove of the combustion chamber
on
the top
of the piston. When the piston
is
installed
in
the cylinder liner, the combustion
chamber should
be
at the same side with the nozzle.
4.
Crankshaft And Flywheel Assembly
The
crankshaft
and
the flywhee1 assembly
is
constituted
by
crankshaft, flywheel,
crankshaft timing gear, crankshaft pulley
and
starting dog etc. The crankshaft
is
made of modular cast iron
and
has
four connecting
rod
shaft neck
and
five main
shaft necks. All the surface of shaft necks
is
quenched or intruded, to improve the
wearing resistance.
The
front
and
rear end
are
sealed by skeleton structure rubber
oil
seal. Theres a
re-
tainer ring installed
in
front of the
oil
seal
to
.assure
the seal liability.
Flywheel
is
positioned by dowel pin,
and
fastened
on
the rear end of crankshaft
by
six high strength bolts. Flywheel bolts should
be
tightened gradually according to the
sequence shown
in
Fig.
4.
Fig.
4
The
tighten sequence of flywheel
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34·