Operator`s manual

The charging system consists of an alternator with an internal voltage regulator, an engine-mounted circuit
breaker, a battery and connecting wires.
Because
of the use of IC's (integrated circuits), the electronic voltage regulator is very compact and is built
into the rear bracket of the alternator.
Charging Voltage Test
If you suspect that the alternator is not producing enough voltage to charge the engine's battery, perform
the
following voltage test.
Al TERNATOR
135 n. 40 A. 50 Al
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Interconnections for Charging Voltage Test
I
I
I
1. Using a voltmeter, connect the voltmeter's red wire clip to the B output terminal on the alternator. Refer
to the schematic shown above.
2. Connect the other wire clip to a ground on the engine.
3. Start the engine and increase the engine's speed to 2000 rpm. Now record the reading given by the
voltmeter.
The voltage reading
for a properly operating alternator should be between 13.5 to 14.5 volts. If your alter-
nator
is over or under charging, have it replaced or rebuilt by a reliable service shop.
Note: Before removing the alternator for repair, make sure 12-Volts excitation
is present at the
R terminal should the above test show only battery voltage at the B output
terminal.
47
Westerbeke Diesel Engines