Workshop Manual Rolls-Royce Silver Shadow & Bentley T Series Chapter M

Alternator and Regulator

The alternator is a three-phase machine with a revolving field and stationary armature, self-limiting in current output.

Rectification of the output into direct current is provided by six silicon diodes in a three-phase bridge circuit.

Maintenance

The charging system requires little attention but should be kept clean and free from dirt build-up.

Check the driving belt for wear and correct tension, and ensure the alternator is properly aligned.

Important precautions must be taken to avoid damage to the system when carrying out vehicle maintenance.

Testing

To test the alternator, connect a voltmeter and ammeter, and observe the voltage and current readings.

If there are faults in the system, they will be apparent by one or more symptoms.

Tests can be carried out on the engine by partial dismantling.

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Alternator and Regulator