Technical data

Description Standard value
Charging voltage 14.4 +0.3V at 20'C (68'F)
Temperature compensation -O.1V/10'C (50'F)
gradient
8. If the ammeter reading is more than 5A, continue to charge the battery until the reading falls
to less than 5A 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
between terminal "B"
(+) and ground (-).
4. Set the engine
tachometer.
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 equalling 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
Hot 16 amp 41 amp 48 amp
Cold 24 amp 50 amp --
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.