TP-6953 7/19 191Section 11 Alternator Component Testing and Adjustment
11.2.3 Troubleshooting Alternator, Fluctuating Voltage
Fluctuating voltage is
detected.
Verify the controller voltage
regulator adjustment. Refer to the
respective generator set controller
operation and/or service manuals.
Is the settings correct?
Are the connections to the
controller with voltage regulator,
LED optic board, and FRX
activator board secured?
Yes
No
Make the
necessary wiring
connections.
Check the alternator output
leads for proper connection per
the voltage reconnection found
in the generator set operation
manual and/or wiring diagrams.
Are the connections correct?
Yes
Repair the stator
windings or replace
the stator assembly
No
No
Tighten the loose
wiring connections.
Yes
Check the stator assembly for
shorted or open windings, refer
to Section 11.7, Stator
Assembly Winding Test. Are
the windings okay?
Adjust the voltage
regulator settings
as required.
No
Check the FRX activator board
by performing the flashlight
test, see Section 11.3 LED
Optic Board Test and Section
11.4, FRX Activator Board
Tes t .
Yes
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