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ELECTRICAL SYSTEM 16-35
Charging System
Charging Voltage Inspection
•
Check the battery condition (see Battery s ection).
•
Warm up the engine to obtain actual alternator operating
conditions.
•
Remove the seats (see Frame chapter).
•
Check that the ignition switch is turned off, and connect
the hand tester [A] to the battery terminals [B].
Special Tool - Hand Tester: 57001–1394 [A]
•
Start the engine, and note t he voltage readings at various
engine speeds with the headlight turned on and then
turned off. (To turn off the headlight, disconnect the
headlight connector on the headlight unit.) The readings
should show nearly battery voltage when the engine
speed is low, and, as the engine speed rises, the read-
ings should also rise. But they must be kept under the
specified voltage.
Charging Voltage
Tester Connections
Range
Teste r (+) t o Test er (– ) to
Reading
25 V DC Battery (+) Battery (–) 14.2 ∼ 15.2 V
•
Turn off the ignition switch to stop the engine, and discon-
nect the hand tester.
If the charging voltage is kept between the values given in
the table, the charging system is considered to be working
normally.
If the charging voltage is much higher than the values
specified in the table, the regulator/rectifier is defective
or the regulator/rectifier leads are loose or open.
If the charging voltage does not rise as the engine speed
increases, then the regulator/rectifier is defective or the
alternator output is insufficient for the loads. Check the
alternator and regulator/rectifier to determine w hich part
is defective.