5-2 How
to
assemble main bearing metals
Of each pair
of
main bearing metals, assemble
that
which has a groove
in
the middle
that
-
is,
on crankcase up side, especially
the
other with thrust bearing
on
the side
of
timing gear case. To prevent leak
of
oil,
give
a thin coating of liquid packing
to
their
contact surfaces with main bearing cap cases on both ends. For connecting rod bearings,
either
of
the
pair can be assembled upon
the
other.
5-3 Undersizes
To both main bearings and connecting rod bearings, metals must be renewed when
their clearances exceeded
O.2mm.
When replacement of metals
not
considered
to
produce satisfactory results because
of
crank shaft being unevenly worn or streaked
deep, grind
it
so much
as
to
fit
to
any of undersize metals which are available
in
three
sizes;
-0.25,
-0.50
and
-0.75.
6 TIMING GEAR
6-1 Timing gear train
___
::::::=::::::::
,~~~~~\\
~
!
:
;/
I
__
4"'
"-?~
f -
LI:'L-i=
ffi--
-"-
~
I:
,\-Y
"~"--.
-7"
i
/'}
"-
: 1
/1
i
,/
.~/
'-
~
'/'"
/"
i
/.'
/,/""
"~
I /
, - I
I
Fig.5-10 Timing gear train
-
74-
I
dl
er
Autotimer
jet
(WI
43
teeth)
(not
provided but
for autotimer)
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