TM 5-3810-207-20/TO 36C23-3-37-12
D-Electrical connections for testing cutout relay and generator
Figure 9 - Continued.
(b)
Voltage regulator opening voltage.
With voltmeter connected as shown
on E, figure 9 increase rpm to
operating speed. Observe reading
on voltmeter. It should read 27.5 to
29.5
volts.
If
adjustment
is
necessary turn the voltage regulator
adjusting
screw
clockwise
to
increase and counterclockwise to
decrease. Set voltage at 29.2 volts.
(c)
Current
regulator
maximum
amperage.
With
ammeter
connected as shown on F, figure 9
and either the test set carbon pile
load set up at 25 to 30 amps, or first
having operated the starter for 10 or
15 seconds to provide the load,
increase rpm to operating speed,
observe reading on ammeter at
which points first vibrate. This
should be 38 to 42 amperes. If
adjustment is necessary, adjust the
current regulator to 40 amperes in
the same manner as the voltage
regulator.
(d)
Replace generator regulator cover
and repeat all tests before removing
adapters. Run regulator voltage
and
amperage
output
through
several cycles of increasing and
decreasing engine speed from idle
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