DETROIT DIESEL 53
Battery-Charging Generator 7.1
Accidentally reversing the battery connections must be avoided.
Never disconnect the battery while an alternator is in operation. Disconnecting the battery may result in damage to the
generator diodes due to the momentary high voltage and current generated by the rapid collapse of the magnetic field
surrounding the field windings.
If a booster battery is to be used, the batteries must be connected correctly (negative to negative and positive to
Never use a fast charger with the battery connected or as a booster for battery output.
Never attempt to polarize the alternator.
If faulty operation of an alternator occurs on an engine equipped with an insulated starting motor, check to be sure that a
ground strap is present and is correctly installed.