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8.
If the ammeter reading is more than SA, continue to charge the
battery until the reading falls to less than SA or replace the
battery with a fully charged one.
An alternative method is to
limit the charging current by connecting 1/4 ohm (25W) resistor in
series with the battery.
Output Test
1.
Disconnect
the battery
ground cable.
2.
Disconnect
the cable from
terminal
"B".
of
alternator
and
connect an
ammeter between
terminal
"B"
and this cable.
3.
Connect a
voltmeter
bet-
ween
terminal
"B"
(+)
and
ground (-).
4.
Set
the
engine
tacho-
meter.
RelilJl
O'----.------i~
to Load
Note:
The
RPM
is
that
of
the
alternator.
The
pulley
ratio
(alternator vs. crank pulley)
is 1.78 to 1.
All readings are at
13.5 VDC.
5.
Connect
battery ground
cable to battery.
The voltmeter
should indicate the battery voltage.
6.
Start the engine.
7.
Turn on the 12 volt accessories equaling the amperage output
of the alternator,
accelerate the engine to the specified speed
(2000 to 3000 RPM)
and measure the output current.
The output
current should be close to alternator maximum output.
Output current
1300 RPM
2500 RPM
5000 RPM
Cold 20· C (68·
F)
7 amp
30 amp
Disassembly
1.
After removing the three through bolts, insert a screwdriver
between the front bracket and stator.
While prying it, remove the
front bracket and rotor.
NOTE:
If the screwdriver is inserted too deep, the stator coil
might be damaged.
2.
Hold the rotor in a vise and remove the pulley nut.
Then
remove the pulley, fan, spacer and seal.
Next, remove the rotor
from the front bracket and remove the seal.
3.
Unsolder
the rectifier from the stator coil lead wires and
remove the stator assembly.
101
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