Kohler 15CCO Service Manual page 106

3. Check exciter armature for a grounded condition.
Using a megohmmeter, apply 500 volts DC to
either armature lead and armature frame. (Follow
the instructions
manufacturer when performing this test.) See
Figure 7-22. A reading of approximately 500K
ohms (1/2 megohm) and higher indicates the
exciter armature is good. A reading of less than
500K ohms
deterioration of winding insulation and possible
current flow to ground. Repair or replacement of
the exciter armature is necessary.
7-24 Component Testing and Adjustment
of the megohmmeter
(approximately) indicates
Exciter
Field
AC
Exciter
-
Armature
AC
Rectifier
Module
Frame
Connection
Megohmmeter
Figure 7-22. Megohmmeter Connections
on Exciter Armature
7 10
+
Main Field
Stator Windings
TP-5606 6/02