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Rectifier Inspection; Regulator Inspection - Kawasaki EN500 Vulcan 500 LTD Service Manual

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15-36 ELECTRICAL SYSTEM
Charging System

Rectifier Inspection

Check the diode resistance as follows. Refer to the ap-
propriate chapters and Charging System Wiring Diagram.
Turn off the ignition switch.
Remove the left side cover (see Left Side Cover Removal
in the Frame chapter).
Disconnect the regulator/rectifier lead connector [A].
Using the 1 kΩ range, check the resistance in both di-
rections between the white/red lead and each yellow lead
(in the 6-pin connector which leads to the alternator), and
between the black lead and each yellow lead. There is a
total of 12 measurements.
The resistance should be low in one direction and more
than ten times as much in the other direction. If any two
leads are low or high in both directions, the rectifier is
defective and must be replaced.
The actual meter reading varies with the meter used
and the individual rectifier, but, generally speaking, the
lower reading should be from zero to one half the scale.

Regulator Inspection

To test the regulator out of circuit, use three 12 V batteries
and a test light (12 V 3 ∼ 6 W bulb in a socket with leads).
The test light works as an indicator and also a cur-
rent limiter to protect the regulator/rectifier from ex-
cessive current. Do not use an ammeter instead of
a test light.
Check to be sure the rectifier circuit is normal before con-
tinuing.
Remove the regulator/rectifier (see Regulator/Rectifier
Removal).
Regulator Circuit Test-1st Step:
Connect the test light and the 12 V battery to the regula-
tor/rectifier as shown.
Check Y1, Y2, and Y3 terminals respectively.
If the test light turns on, the regulator/rectifier is defective.
Replace it.
If the test light does not turn on, continue the test.
Regulator Circuit Test-2nd Step:
Connect the test light and the 12 V battery in the same
manner as specified in the "Regulator Circuit Test-1st
Step".
Apply 12 V to the BR terminal.
Check Y1, Y2, and Y3 terminals respectively.
If the test light turns on, the regulator/rectifier is defective.
Replace it.
If the test light does not turn on, continue the test.
NOTE
CAUTION

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Vulcan 500 ltd

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  • Ricardo Paluan Apr 27, 2016 01:22:
    Adquiri recentemen​te uma moto vulcan 500 ano 1995. Tenho o 37 anos e iniciante no mundo motociclis​ta. Entretanto​, em razão só tempo e idade da moto, não tenho o manual do proprietá​rio, sendo este indispens