Yanmar 3JH3E - 4-10 Performance test

Chapter 9 Electrical System
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A;.;.;.;lt;..;.;er;..;n.;.;;a;.;.to;;.;;r~--------------------------3,4]H3(B)(C)E
(3)
Assembllng
the
rear cover
Insert pins from the outsice of the rear cover. lnsta!!
the brush on the brush holder, then attach the rear
cover.
After assembly, pull out the pins.
(4)
Tightening torques
Positions
Brush
holder
fixing
Diode
fixing
Bearing retainer
fixing
Pulley
nut
tightening
Through-bolt tightening
4-10 Performance test
Brush
hclder
Pin
Rear
cover
Tightening
torque
kg-cm
32-40
32-40
32-40
400-600
32-40
Conduct a performance test on the reassembled AC gen-
erator as fotlows. The following ls the circuit for the perfor-
mance test.
-\
~-----
.... -'\fl.Iv-'
'-----+'!f't-------4
.
./
Printed in Japan
HINSHl•H8009
0.25
Q
Resistor
Connect
when
1he
batterries
are
discharged
9-29
(1)
Measuring devices
DC
voltmeter
0-15V
or
0-30V,
0.5 Class, 1pc.
DC
ammeter
o-100A,
1.0 Clsss
1pc.
Variable resistor
0-0.25O.
1kW,
1pc.
Lamp
12V, 3W
100
Q
resistor
3W
O
.25
Q
resistor
25W
(2)
Measuring the regulatlng voltage
1)
When measuring devices are connected
in
the per•
formance
test
circuit
as
shown
above, the charge
lamp lights.
2)
Close SW2 while keeping
SW1
open and run the
AC
generator. When the revolutions of the generator are
gradually raised, the charge lamp goes off.
3} Raise the revolutions of
the
AC generator, and read the
voltmeter gauge when the revolutions reach about
5,000
rpms.
NOTES :
1.
Make sure that the ammeter indication
at
this
time
is
less than
SA
If
the indication
is
over
SA,
connect the 0.25
0 resistor.
The
volt-
meter indication
at
this time must
be
with-
in
the prescribed regulating voltage
value.
2.
Raise
the
AC
generator revolutions high
to
make sure the regulating voltage does not
fluctuate along with changes
in
the revolu-
tion speed.
{3)
Precautions for measuring the regulating voltage
1)
When measuring the voltage, measure the voltage
between the
AC
generator BAT terminal, or Battery
+
terminal, and AC generator E-termina!.
2)
Use a fully charged battery.
3)
Measure the voltage
quickly.
4}
Keep SW, open for measurement.