TM 9-4910-663-34
(23)
Set circuit breaker switch (CB1) and D.C. VARIABLE VOLTS switch (S10) to the ON position. Adjust DC
VARIABLE POWER SUPPLY 0-32 VDC control (T5) to provide a 5 volt indication on DC VOLTMETER OUTPUT
VOLTAGE meter (M2).
(24)
Check to see that the external DC voltmeter and the AC VOLTMETER OUTPUT VOLTAGE meter both
indicate approximately 5 volts.
n.
AC AMMETER OUTPUT CURRENT METER Circuit.
(1)
Set all test stand controls to the preliminary settings listed in table 2-2.
(2)
Set DC VOLTMETER OUTPUT VOLTAGE SELECT switch (S11, fig 2-4) to the VAR position, and set DC
VOLTMETER OUTPUT VOLTAGE RANGE switch (S12) to the X5 position.
(3)
Set DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE CURRENT RANGE
switch (S14) to the X1 position.
(4)
Set DC AMMETER FIELD CURRENT RANGE switch (S30) to the X1 position.
(5)
Plug a phone plug into the calibration jack for AC AMMETER OUTPUT CURRENT meter (M5), and
connect the phone plug leads to the calibration jacks for DC AMMETER FIELD CURRENT meter (M7).
(6)
Set AC AMMETER OUTPUT CURRENT RANGE switch (S26) to the X1 position, and set AC AMMETER
OUTPUT CURRENT SELECT switch (S25) to the (T1) position.
(7)
Connect a test lead from the positive DC VARIABLE VOLTS OUTPUT binding post (fig 2-5) to the
ALTERNATOR (T1) binding post (fig 2-6), and connect another a second test lead from the rectifier chamber (T1)
binding post to the REGULATOR B+ binding post.
(8)
Make certain that DC VARIABLE POWER SUPPLY 0-32 VDC control (T5, fig 2-7) is set fully
counterclockwise.
(9)
Set circuit breaker (CB1) to the ON position.
(10)
Set LOAD SELECTION 0-25 AMPS/0-12.5 AMPS switch (S24) and MASTER LOAD DISCONNECT switch
(S8) to the ON position.
(11)
Set D.C. VARIABLE VOLTS switch (S10) to the ON position, and adjust DC VARIABLE POWER SUPPLY
0-32 VDC control (T5) to provide a 20 volt indication on DC VOLTMETER OUTPUT VOLTAGE meter (M2).
(12)
Adjust VARIABLE LOAD control (R32) slowly to provide a 14 ampere indication on DC AMMETER LOAD
& STARTER OUTPUT CURRENT BATTERY CHARGE CURRENT meter (M3). (It may be necessary to readjust DC
VARIABLE POWER SUPPLY 0-32 VDC control (T5) to obtain the 14 ampere indication.
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