Yangdong Co. Y90 Series Spezifikationen Seite 25

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Seitenansicht 24
.After service for a
, .Fig. 5 Valve sinkage
and
frequently.
The
period
-
lashes
lon~
recommended adjusting
method
is
shown
on
para~raph
I
of
Section
4.
If
the
lashes are
too
large,it may
affect
the corre'ctness
of
valve timing
and
the
noise
level
of
replacing
the
valve
seat
should
be
considered.
Check
the valve
rew-inding
many
times,
the
sinkage will increase.
When it exceeds
2.Qrnm,
valve device rises.On
the
contrary,it may cause
leaka~e·or
valve burnt out.
..
----"'p
--
....
---
II
. CvlinderBLock
The
cylinder
bl~ck
is made
of
cast iron
and
is
of
crankshaft centerline of'f- split face
stnlcture. Besides
the
fitting bores for the liner and
the
cylinder head boltholes,on the
top
plane
of
the block there are holes leading water to the cylinder head.
Near
the
rear
end
of
the· block
there are channels delivering
lube
.oil upward
to
the
.cylinder
head.
The
water
pump
is mounted
on
the
upper
front face
of
cylinder
block
,and
the
gear
FIg. 6
Protruding
height
of
the
liner ftange plane
relative
to the plane
of
cylinder block
system is
on
the
lower part.
The
flywheel housing is installed
at
the
rear face
of
the
block.On
the
block bottom,there
are
a lube oil inlet,a hole for the lube
oil
pump
and
tap
holes for instaJlinJ! the Slunp. 'There
are
a side
cover
and a breather on the left side
of
the
block(facing to
the
front end).There are the lube oil filter,fueJ filter
and
drain
cock
on
the
right side
of
this block.
The
Inain lube oii line
and
its branches are arranged in horizon.
The
lube
oil
passages delivering lube oil
to
the camshaft bushes are slant.When disJnantling and repairing
5-2
Seitenansicht 24
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