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 TM 55-1905-221-14-1
4-28.
ALTERNATORS (Continued).
Location/Item
Action
Remarks
TEST (Cont)
c.
If auxiliary terminal is
higher than specified, field
circuit is defective. Check
brushes.
d. If voltage reads 0 volts at
auxiliary terminal check
field excitation device and
associated circuit. If
voltage is incorrect, see h
below.
NOTE
Disconnect jumper wire after testing.
e. With propulsion unit or engine
running, check dc voltage
across auxiliary and negative
output terminals. Correct
voltage is 29.4+0.2 volts, if
lower, proceed with test.
4-103
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