ARMY TM 9-6115-643-24
AIR FORCE TO 35C2-3-445-22
j. Set multimeter for AC volts and connect to terminals 10 and 11 of AC voltage regulator. Start generator set and
operate at rated frequency. Move and hold MASTER SWITCH in START position. Multimeter should indicate 110
to 160 VAC.
k. Shut down generator set.
l. Disconnect wire 137A from terminal 5 of AC voltage regulator. Set multimeter for ohms and connect positive lead
to wire 137A and negative lead to terminal 4 of AC voltage regulator. Move VOLTAGE adjust potentiometer to full
counterclockwise position. Multimeter should indicate approximately 0 ohms. Move VOLTAGE adjust potentiome-
ter clockwise slowly while observing multimeter. Multimeter should increase smoothly to approximately 20,000
ohms.
TABLE 4-2. Voltage Adjustment Range (MEP-814A)
Voltage Reconnection Terminal Board Position
Adjustment Range
120/208
197-229 volts
240/416
395-458 volts
m.
n.
o.
4.1.4
a.
b.
c.
d.
e.
4.1.5
a.
b.
c.
d.
—
4.2
If steps h, j, and I are as indicated above. AC voltage regulator is defective and must be replaced.
Connect all wires previously disconnected.
Close output box access door.
Removal.
Shut down generator set.
Open battery access door and disconnect negative battery cable.
Release control panel by turning two fasteners and lower control panel slowly.
Tag and disconnect AC voltage regulator (2, FIGURE 4-1) electrical leads.
Remove screws (1) and AC voltage regulator (2).
Installation.
C A U T I ON
The components of the AC voltage regulator kit are not interchange-
able. Ensure the part number of the component to be installed is the
same as the removed component. Failure to observe this caution will
result in equipment damage.
Install AC voltage regulator (2, FIGURE 4–1 ) with screws(1).
Connect electrical leads and remove tags.
Raise and secure control panel.
Connect negative battery cable. Close battery access door.
GOVERNOR CONTROL UNIT.
WARNING
High voltage is produced when this generator set is in operation. Im-
proper operation could result in personal injury or death.
4-3
