GENERAL PRECAUTIONS FOR ALTERNATORS
NEVER disconnect the battery or the starter switch while the alternator is running. This will cause a voltage surge in the
system and damage the diodes and transistors.
NEVER disconnect any electrical lead without first stopping the engine and turning all switches to the "OFF" position.
ALWAYS identify a lead as to its correct terminal before disconnection. A short circuit or reversed polarity will destroy
diodes and transistors.
NEVER connect a battery into the system without checking for correct polarity and correct voltage.
NEVER "Flash" connections to check for current flow. No matter how brief the "Flash", the transistors may be destroyed.
NEVER experiment to try to adjust or repair the system unless you have had proper training on alternators, and you have
the correct test equipment and technical data.
NEVER ground the field circuit.
NEVER run the alternator if the output circuit is open, (i.e., without an electrical load).
NEVER attempt to polarize an alternator. When using a battery charger disconnect battery cables.
NEVER apply a battery voltage direct to the regulator or alternator field terminals because this will damage the transistors.
ALWAYS disconnect the alternator terminals before carrying out any electrical welding on the boat because the intense
magnetic field created by the "make" and "break" of the arc may cause damage to the diodes.
DO NOT check for continuity of the alternator or regulator with insulation testers such as a "Megger", etc.
ALWAYS disconnect the battery before connecting test instruments (except voltmeter) or before replacing any unit or
wiring.
STARTER MOTOR
The starter motor has a centrifugally operated mechanical overspeed protection device that releases the pinion from the
flywheel when it reaches a predetermined excessive speed.
The solenoid and main switch assemblies are mounted on top (external) of the starter motor housing.
Normally, scheduled maintenance is not required.
The starter motor type is stamped on the housing or nomenclature plate.
BATTERY MAINTENANCE
WARNING: Batteries being charged give off explosive gas. Do not smoke or produce
any means for spark ignition. Always ensure that batteries are properly and securely
located in an area with adequate ventilation and access for maintenance. In addition,
the following guidelines should be adopted:
1.
Batteries should be isolated (with isolation switch) when not in use.
2.
Maintain correct electrolyte level (just above the top of the separators).
3.
Keep batteries clean and dry to avoid possible corrosion and current leakage.
4.
Ensure battery connections are clean and tight and, to avoid overheating, that the cable size is adequate for the
current load.
5. Ensure that no current conducting components or attachments are located in close proximity to the battery.
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