Alternator Inspection - Segway SNARLER ATV 2021 Series Service Manual

ENGINE-ELECTRICAL SYSTEM ENGINE-ELECTRICAL SYSTEM

Alternator Inspection

Alternator Inspection
There are three types of alternator failures: short, open,
or loss in rotor magnetism. A short or open in one of the
coil wires will result in either a low output, or no output
A A
at all. A loss in rotor magnetism, which may be caused
by dropping or hitting the alternator, by leaving it near an
electromagnetic field, or just by aging, will result in low
output.
◆ To check the alternator output voltage, perform the
◆ Disconnect the alternator connector【A】.
◆ Connect a hand tester as shown in the table.
◆ Start the engine.
◆ Run it at the rpm given in the table.
◆ Note the voltage readings (total 3 measurements).
Alternator Output Voltage Alternator Output Voltage
Tester
Range
250V AC
If the output voltage is within the values in the table, the
alternator is operating correctly, and the regulator/rectifi er
is damaged. A much lower reading indicates that
the alternator is defective.
◆ Check the stator coil resistance as follows:
◆ Stop the engine.
◆ Disconnect the alternator connector.
◆ Connect a hand tester as shown in the table.
◆ Note the readings (total 3 measurement).
3-3-10
following procedures.
Connections
Tester (+) to Tester (–) to
One yellow
lead
Reading
@3000rpm
Another
36~54 V
yellow lead