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Westerbeke 10TWO Technical Manual page 59

Marine
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3.
Set the piston, connecting rod and tool assembled in the pre-
ceding paragraph, to the tool body.
To set, ?lign the notch of
the guide with that of the body and insert the assembly into the
tool body.
Then turn the guide
90
degrees.
After setting, be
sure that the small end of the connecting rod securely rests on
the receiving part of the tool body.
Also check that the front
mark (arrow) on the top of the piston and the identification mark
of the connecting rod are facing upward.
4.
With the piston set on a hydrau-
lic press, press the piston pin
into the piston.
The hydraulic
pressure should be be-tween
500
-1500
kg
(1100 - 1300
Ibs).
If
the
pin
requires
a
greater
or
lesser
pressure,
replace
the
connecting rod or piston and pin
assembly.
The pin
is
pressed
into
a
prescribed
position
by
the guide.
After the installa-
tion is completed, turn the push
rod
90
degrees, align the notch
of
the guide with
that of
the
tool body, and remove the piston
and connecting rod assembly from
the tool body.
CAUTION
After installing the piston and connecting rod, verify that the piston
pin is equally pressed in against the center of the rod.
If the pin
has been installed unequally, correct it.
In such a case, check the
tool.
Installation of Piston Rings
Since piston rings differ in shape from
one another,
they must be installed as
illustrated
paying
attention
to
the
posi tion and direction.
They must
be
installed
so
that
the
manufacturer's
mark and size mark face the top of the
piston.
Insert
the
crankshaft
into
the
crank-
case.
Apply
engine
oil
to
the
main
bearings and journals, and take care not
to damage the main bearing.
Install
the
front
bearing
housing.
56
~
':L]No.l
,
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~No.3
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