ARMY TM 9-6115-645-24
AIR FORCE TO 35C2-3444-12
MARINE CORPS TM 09244A/09245A-24/2
2-29.3. Removal.
a. Shut down generator set.
b. Open battery access door and disconnect negative battery cable.
c. Release control panel by turning two fasteners and lower control panel slowly.
d Tag and disconnect ammeter (PERCENT RATED CURRENT) (24, FIGURE 2-12) electrical leads.
e. Remove nuts (22), washers (36), and screws (23).
f.
Remove ammeter (PERCENT RATED CURRENT) (24) from control panel.
2-29.4. Installation.
a. Insert ammeter (PERCENT RATED CURRENT) (24, FIGURE 2-12) into control panel.
b. Install screws (23), washers (36), and nuts (22).
c. Connect electrical leads and remove tags.
d. Raise and secure control panel.
e. Connect negative battery cable.
Close battery access door.
2-30 KILOWATTMETER (PERCENT POWER).
2-30.1. Inspection.
a. Shut down generator set.
b. Inspect meter for broken lens, cracked housing, and other damage.
2-30.2. Testing.
a. Shut down generator set.
b. Open battery access door and disconnect negative battery cable.
c. Release control panel by turning two fasteners and lower control panel slowly.
d. Tag and disconnect wire 120A from positive terminal of kilowattmeter (PERCENT POWER).
e Set multimeter for milliamperes and connect between disconnected wire 120A and positive terminal of
kilowattmeter (PERCENT POWER). f.
Connect negative battery cable, start and operate generator set at rated
voltage and frequency.
Apply some load to generator set. g Observe and note indications on multimeter and
kilowattmeter (PERCENT POWER).
h. Shut down generator set.
i.
Calculate the percent of power from multimeter indication using the following formula:
Percent of power =
133 x Multimeter indication
1.2 Ma.
j.
Compare calculated percent of power to kilowattmeter indication noted during operation.
If difference is greater
than 13%, replace kilowattmeter (PERCENT POWER).
k. Disconnect negative battery cable.
I.
Remove multimeter and connect wire 120A to kilowattmeter (PERCENT POWER).
m. Raise and secure control panel.
n. Connect negative battery cable and close battery access door.
2-60 Change 4
