Alternator Maintenance - Kohler KG80 Maintenance Manual

This section covers alternator maintenance for several different types of alternators. Refer to the instructions that correspond to
the relevant alternator models.

Refer to the generator set specification sheet for alternator models.

Have an authorized distributor/dealer perform service.
WARNING
Disabling the generator set. Accidental starting can cause severe injury or death. Before working on the generator set or
equipment connected to the set, disable the generator set as follows: (1) Press the generator set off/reset button to shut down
the generator set. (2) Disconnect the power to the battery charger, if equipped. (3) Remove the battery cables, negative (–) lead
first. Reconnect the negative (–) lead last when reconnecting the battery. Follow these precautions to prevent the starting of the
generator set by the remote start/stop switch.
Testing live electrical circuits. Hazardous voltage or current will cause severe injury or death. Have trained and qualified
personnel take diagnostic measurements of live circuits. Use adequately rated test equipment with electrically insulated probes
and follow the instructions of the test equipment manufacturer when performing voltage tests. Observe the following precautions
when performing voltage tests: (1) Remove all jewelry. (2) Stand on a dry, approved electrically insulated mat. (3) Do not touch
the enclosure or components inside the enclosure. (4) Be prepared for the system to operate automatically. (600 volts and under)
Grounding electrical equipment. Hazardous voltage will cause severe injury or death. Electrocution is possible whenever
electricity is present. Ensure you comply with all applicable codes and standards. Electrically ground the generator set and
related equipment and electrical circuits. Turn off the main circuit breakers of all power sources before servicing the equipment.
Never contact electrical leads or appliances when standing in water or on wet ground because these conditions increase the
risk of electrocution.
Short circuits. Hazardous voltage/current will cause severe injury or death. Short circuits can cause bodily injury and/or
equipment damage. Do not contact electrical connections with tools or jewelry while making adjustments or repairs. Remove all
jewelry before servicing the equipment.
WARNING
Servicing the alternator. Hot parts can cause severe injury or death. Avoid touching the alternator field or exciter armature.
When shorted, the alternator field and exciter armature become hot enough to cause severe burns.
DANGER
Servicing the generator set when it is operating. Exposed moving parts will cause severe injury or death. Keep hands,
feet, hair, clothing, and test leads away from the belts and pulleys when the generator set is running. Replace guards, screens,
and covers before operating the generator set.
TP-7173 10/20
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before working on the generator set. Remove the
negative (–) lead first when disconnecting the battery. Reconnect the negative (–)
lead last when reconnecting the battery.
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until it cools.
Hazardous voltage. Moving parts.
Will cause severe injury or death.
Operate the generator set only when all guards and electrical enclosures are in place.
Section 4. Alternator Maintenance
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