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 TM 9-2320-269-34-1
ALTERNATOR - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
VOLTAGE REGULATOR TESTING
NOTE
The voltage regulator Is a solid-state unit mounted inside the alternator assembly. There are no
adjustments to the voltage regulator. The voltage regulator can be checked to see if it is
performing properly by performing the following procedure.
61.
Alternator
a.
Put on test stand.
assembly (1)
b.
Make connections, as shown below.
c.
Do not connect carbon pile lead.
NOTE
The ground polarity of the battery and the alternator must be the same. Battery must be fully
charged. Use a 10-ohm resistor, rated at six watts or more, between alternator number one
terminal and battery.
62.
Alternator
a.
Slowly increase alternator speed.
assembly
b.
Read and record voltage.
c.
If voltage increases above 15.5 volts,
check for grounded brush lead clip
d.
If the brush lead clip is not grounded,
disassemble alternator and install new
voltage regulator (page 2-414).
e.
If the voltage recorded is not above
15.5 volts, connect the carbon pile
lead.
f.
Operate alternator at moderate rate of
speed.
TA238190
2-426
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