Download Onan DKD Service Manual

FLOW CHART E. OUTPUT VOLTAGE TOO HIGH, TOO LOW, OR UNSTABLE
(TRANSFORMER VOLTAGE REGULATOR)
Many iroubieshooting procedures present hazards that can resuit in severe personal injury or
b
%
!
l
death. Only qualified senice personnel
knowledge of fuels,eieciricity, and macbimry hazads
should perform service procedures. Review safety precautions on inside cover page.
witt,
START
Set r/min per instructions in
appropriate engine manual.
Is engine running stable and at
correct r/min?
Are there broken wires or loose connections
to any AC regulator components?
Apply load to generator and then remove.
Is voltage across generator leads S1 and S2
60 VAC 2 5 percent?
+
no
*
Repair as required.
Test stator assembly per TEST [K].
Replace if bad.
1I
Test transformer T21 per TEST
[N]. Replace if bad.
,
Test exciter stator per TEST [HI
Replace if bad,
1
Test rotor assembly per TEST [J]. Replace i f
bad.
6-6
Redistribution or publication of this document
by any means, is strictly prohibited.