TM 9-4910-663-34
(8)
Set DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE CURRENT RANGE
switch (S14) to the X1 position.
(9)
Connect a jumper lead between the GENERATOR F and the REGULATOR B+ binding posts (fig 2-6).
(10)
Connect an external 0-50 DC millivoltmeter to the calibration jacks of DC AMMETER FIELD CURRENT
meter (M7), observing polarity.
(11)
Set circuit breaker switch (CB1) to the ON position.
(12)
Check to see that DC VARIABLE POWER SUPPLY 0-32 VDC control (T5, fig 2-7) and VARIABLE LOAD
control (R32) are both set to their fully counterclockwise setting.
(13)
Set D.C. VARIABLE VOLTS switch (S10), MASTER LOAD DISCONNECT switch (S8), and LOAD
SELECTION 0-25 AMPS/0-12.5 AMPS switch (S24) to the ON position.
(14)
Adjust DC VARIABLE POWER SUPPLY 0-32 VDC control (T5) to provide a 10 volt indication on DC
VOLTMETER OUTPUT VOLTAGE meter (M2).
(15)
Rotate VARIABLE LOAD control (R32) clockwise slowly to the full clockwise setting, and readjust DC
VARIABLE POWER SUPPLY 0-32 VDC control (T5) as necessary to maintain the 10 volt indication on DC VOLTMETER
OUTPUT VOLTAGE meter (M2). Check to see that DC AMMETER FIELD current meter (M7) and the external DC
millivoltmeter both start to indicate as VARIABLE LOAD CONTROL (R32) is rotated clockwise. At the fully clockwise
setting of VARIABLE LOAD control (R32), check to see that DC AMMETER FIELD CURRENT meter (M7) indicates
approximately 6 to 8 amperes, and the external DC millivoltmeter indicates approximately 8 to 15 millivolts.
(16)
Disconnect the external DC millivoltmeter.
(17)
Set DC AMMETER FIELD CURRENT RANGE switch (S30) to the X3 position. Check to see that the
indication on the DC AMMETER FIELD CURRENT meter varies as VARIABLE LOAD control (R32) is adjusted.
(18)
Adjust VARIABLE LOAD control (R32) to provide a 3 ampere indication on DC AMMETER FIELD
CURRENT meter (M7).
(19)
Set DC AMMETER FIELD CURRENT RANGE switch (S30) to the X1 position, and check to see that DC
AMMETER FIELD CURRENT meter (M7) indicates 3 amperes.
(20)
Adjust FIELD CURRENT 0-30 AMPS (MAX) control (R26) counter clockwise, and check to see that the
indication on DC AMMETER FIELD CURRENT meter (M7) decreases as the control is adjusted.
(21)
Set FIELD CURRENT 0-30 AMPS (MAX) control (R26) and FIELD CURRENT (final) control (R27) fully
clockwise.
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