G 2.5A Portable Generator Repair
wc_tx000207gb.fm 40
5.14 Rotor Winding Test
See Graphic: wc_gr000939
Before testing rotor, visually inspect windings for dark streaks which
indicate a burned or shorted winding. Rotate ball bearing by hand.
Replace it if it is rough or noisy.
To check rotor:
5.14.1 Remove end cover, locknut, stator and rotor from generator. See
Generator Disassembly
.
5.14.2 Unsolder wires from diodes, being careful not to break wires.
5.14.3 Measure rotor resistance as shown.
5.14.4 Record resistance values of both windings and compare them with
values listed in table of
Resistance Values
.
5.14.5 Check for grounded windings by holding one meter lead to winding and
other lead to metal frame on rotor.
Replace rotor if windings are open, shorted internally or shorted to
metal frame.
w c _ g r 0 0 0 9 3 9
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