ARMY TM 9-6115-644-24
AIR FORCE TO 35C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
c.
Release control panel by turning two fasteners and lower control panel slowly.
d.
Tag and disconnect BATTERY CHARGE ammeter (18, FIGURE 2-12) electrical leads.
e.
Remove nuts (16) and screws (17), and washers (33, 34).
f.
Remove BATTERY CHARGE ammeter (18).
2-27-4
Installation.
a.
Insert BATTERY CHARGE ammeter (18, FIGURE 2-12) into control panel.
b.
Install screws (17), washers (33, 34), and nuts (16).
c.
Connect electrical leads and remove tags.
d.
Raise and secure control panel.
e.
Connect negative battery cable. Close battery access door.
2-28 FREQUENCY METER (HERTZ).
2-28-1
a.
b.
2-28-2
a.
b.
c.
d.
e.
f.
g.
h.
i .
j.
k.
I.
2-28-3
a.
Inspection.
Shut down generator set.
Inspect meter for broken lens, cracked housing, and other damage.
Testing (50/60 Hz).
NOTE
Test frequency transducer in accordance with paragraph 2-52-2 or 2-52-3 prior to
testing FREQUENCY meter (HERTZ).
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.
Disconnect wire 181A from positive (+) terminal of FREQUENCY meter (HERTZ).
Set multimeter for DC millamps and connect negative lead to positive (+) terminal of FREQUENCY
meter (HERTZ) and positive lead to wire 181A.
Position FREQUENCY SELECT switch to 60 Hz.
Connect negative battery cable, start and operate generator set at rated voltage and adjust
frequency to 60 Hz.
Multimeter indication should be between 0.781 and 0.923 DC milliamps.
Position FREQUENCY SELECT switch to 50 Hz and adjust frequency to 50 Hz.
Multimeter indication should be between 0.071 and 0.213 DC milliamps.
Replace FREQUENCY meter (HERTZ) if meter readings are not as stated above.
Raise and secure control panel.
Testing (400 Hz).
Shut down generator set
Change 1
2-61
