TM 9-4910-663-12
(15 ) Set DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE
CURRENT RANGE switch (S14, fig 2-1) to appropriate position and ob-
serve load current on DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY
(16) Set DC AMMETER FIELD CURRENT switch (S30, fig 2-1) to
appropriate position and observe generator field current on DC AMMETER
(17) Control generator speed by using SPEED CONTROL (fig 2-4).
NOTE
FIELD CURRENT 0-30 AMPS (MAX) control (R26, fig
2-2) must be adjusted while varying speed because
generator voltage will vary proportionately with
speed.
(18) Perform required generator tests as specified in test
procedures of manufacturer.
(19) Upon completion of tests, decrease generator output voltage
by adjusting FIELD CURRENT 0-30 AMPS (MAX) control (R26, fig 2-2) and
0-5 AMPS (MAX) control (R27, fig 2-2) counterclockwise. Then. de-
crease loading by setting LOAD SELECTION switches (S17 through S24) to
OFF . Place MASTER LOAD DISCONNECT switch (S8) to OFF position.
Reduce varidrive speed to one quarter speed using SPEED CONTROL (fig
2-4).
(20) Set all switches to OFF and press STOP pushbutton switch
(21) If no further testing is to be performed on the test stand,
b. Testing Generator-Regulator (Negative Ground).
2-11, 2-16, 2-17, 2-18, 2-20, 2-2 1,
and 2-22.)
NOTE
This test procedure is only a typical procedure.
(1) Position test stand controls in accordance with table 2-1.
(2) Install regulator on regulator mounting bracket (33, 34, fig
2-7) and adjust to desired position.
(3) Install batteries in battery compartment (4, fig 4-3) of
test stand and connect to proper binding posts (refer to para 2-3h and
fig 2-8). Four binding posts, labelled -, 6V, 12V, and 24V, are
provided on terminal board assembly in battery compartment.
(4) Set BATTERY CIRCUIT SELECTOR switch (S6, fig 2-2) to proper
voltage for system under test.
2-34