ARMY TM 9-6115-644-24
AIR FORCE TO 35C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
2-31 AC VOLTMETER (VOLTS AC).
2-31-1
a.
b.
2-31-2
a.
b.
c.
d.
e.
f.
g.
h.
i .
j.
k.
I.
m.
n.
o.
p.
2-31-3
a.
b.
c.
d.
e.
f.
2-31-4
a.
b.
Inspection.
Shut down generator set.
Inspect AC Voltmeter (VOLTS AC) for broken lens, cracked housing, and other damage.
Testing.
Shut down generator set.
Release control panel by turning two fasteners and lower control panel slowly.
Set multimeter for AC volts and connect to AC Voltmeter (VOLTS AC) terminals.
Move voltage reconnection board to 120/208 position.
Start and operate generator set at rated voltage and frequency.
Move AM/VM transfer switch to L3-L1 position. Note indications on multimeter and AC Voltmeter
(VOLTS AC).
Move AM/VM transfer switch to L3-L0 position. Note indications on multimeter and AC Voltmeter
(VOLTS AC).
Shut down generator set.
Move voltage reconnection board to 240/416 position.
Start and operate generator set at rated voltage and frequency.
Repeat steps e and f.
Shut down generator set.
Compare AC Voltmeter (VOLTS AC) readings to multimeter in each position.
Replace AC Voltmeter (VOLTS AC) if readings differ more than + 5 VAC between 115-125 VAC or
+ 10 VAC between 200-250 VAC.
Remove multimeter.
Raise and secure control panel.
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 Voltmeter (VOLTS AC) (31, FIGURE 2-12) electrical leads and remove
sleeves (28).
Remove nuts (29), washers (37), and screws (30).
Remove AC Voltmeter (VOLTS AC) (31) from control panel.
Installation.
Insert AC Voltmeter (VOLTS AC) (31, FIGURE 2-12) into control panel.
Install screws (30), washers (37), and nuts (29).
Change 1
2-65
