Specifications
There
is a
thrust
flange
at
the
front
end
of
camshaft,and
a
thrust
plate
of
camshaft
is located
at
the
front
end
to
control
the
camshaft
axial moving.
The
lube
oil is
delivered
to
the
camshaft
bushings
separately
through
the main oil line.Before
assembling
the
front
bushing
of
camshaft,
check
whether
the
oil holes
on
the
bushing
and oil
passage
in
the
cylinder
block
cOlnmunicate
with
each
other.
As
the
camshaft
gear
is
engaged
with
the
driven
gear
oiNhe
oil
pump,therefore,
before
dismantling
the
camshaft,it is necessary
to
disassemble
the lube oil
pump,then
draw
the
camshaft
out
from
the
front
end.
The
axis
of
the
tappet
deviates from
the
center
line
of
canl
width
.During
operating,the
tappet
rotates
so
as
to
provide
an
even
wearing
on
the
bottom
surface
and
the cylindrical
surface
of
tappet.
VI
.
Gear
Transmission System
l'he
gear
transmission system consists
of
the
crankshaft
timing
gear
..
tilning
idler'lCanlshaft
timing
gear,injection
pump
timing
gear
and
hydraulic pUlnp gear.
Except
the
hydraulic
pump
gear,all
the
titning
~"ears
are all Inarked
with
timing
signs
which,
'Nhen assembling,should align \vtih each
other
at the nleshing position (the single tooth marked
with a
sign is inlaid bet\veen the
t\VQ
adjacent Jnarked teeth)in
order
to
ensure
the tnOVenlent
relationship
of
a.
11
nloving parts,as
shown
in Fig.9.
Fig. 9 Timing
gear
meshing signs
5-6