Westerbeke 38B FOUR Operator's Manual download pdf (Page 49)

The charging system consists of an alternator with an internal voltage regulator, an engine-mounted circuit

breaker, a battery and connecting wires.

Because

the use of IC's (integrated circuits), the electronic voltage regulator

very compact and

built

into the rear bracket of the alternator.

Charging

Voltage

Test

If you suspect that the alternator

not producing enough voltage

charge the engine's battery, perform

the

following voltage test.

TERNATOR

135

,-----/---€,i\l--\

- -

Interconnections for Charging Voltage Test

Using a voltmeter, connect the voltmeter's red wire clip

the B output terminal on the alternator. Refer

the schematic shown above.

Connect the other wire clip

a ground on the engine.

Start the engine and increase the engine's speed to 2000 rpm. Now record the reading given

the

voltmeter.

The voltage reading

for

a properly operating alternator should be between 13.5

14.5 volts. If your alter-

nator

over

under charging, have it replaced or rebuilt by a reliable service shop.

Note: Before removing the alternator for repair, make sure 12-Volts excitation

present at the

R terminal should the above test show only battery voltage at the B output

terminal.

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Westerbeke 38B FOUR Operator's Manual Page 49