Kohler EKOZD Series Service page 191

11.2.3 Troubleshooting Alternator, Fluctuating Voltage
Fluctuating voltage is
detected.
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?
Are the connections to the
controller with voltage regulator,
LED optic board, and FRX
activator board secured?
Check the stator assembly for
shorted or open windings, refer
to Section 11.7, Stator
Assembly Winding Test. Are
the windings okay?
Verify the controller voltage
regulator adjustment. Refer to the
respective generator set controller
operation and/or service manuals.
Is the settings correct?
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
Test.
TP-6953 7/19
No
Yes
Yes
Yes
Yes
Make the
necessary wiring
connections.
Tighten the loose
No
wiring connections.
Repair the stator
No
windings or replace
the stator assembly
Adjust the voltage
No
regulator settings
as required.
Section 11 Alternator Component Testing and Adjustment 191