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 TM 55-1905-223-24-3
NOTE
The generator is separately excited by a 12 volt dc battery
supply to give an indication of the condition of the windings and
main rectifier assembly. Refer to figures 3-4 and 3-5 for
terminal locations and method of separately exciting the
generator.
FIGURE 3-4. Separately Exciting the Generator.
NOTE
A 12 volt dc battery supply is sufficient to obtain the full output
voltage within 10 percent, at no load and rated speed.
(1) Use a 12 volt dc supply to separately excite the generator as follows (see Figure 3-5 for voltage
regulator terminals):
(a) Remove and tag the exciter stator leads marked X and XX from the automatic voltage regulator.
(b) Measure the resistance between lead Xand lead XX. Resistance should be 26.6 to 30.8 ohms.
(c) Remove and tag the remaining push on leads from the automatic voltage regulator.
(d) Connect the 12 volt dc battery positive lead to the X lead and the negative lead to the XX lead
going to the manual voltage regulator.
3-17
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