ARMY TM 9-6115-645-24
AIR FORCE TO 35C2-3-444-12
MARlNE CORPS TM 09244A/09245A-24/2
2-54.3
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b.
c.
d.
e.
f.
2–54.4
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b.
c.
d.
e.
f.
Removal.
Shut down generator set.
Open battery access door and disconnect negative battery cable.
Remove control box top panel, paragraph 2-15.1.
Tag and disconnect shunt (43, FIGURE 2-1 4) electrical leads.
Remove Control Box Assembly, paragraph 2-19.2.
Remove screws (41 ), nuts (42) and shunt (43).
I n s t a l l a t i o n
Install shunt (43, FIGURE 2-1 4) and secure with screws (41) and nuts (42).
Close output box access door.
Connect all electrical leads and remove tags.
Install Control Box Assembly, paragraph 2-19.4.
Install control box top panel, paragraph 2-15.4.
Connect negative battery cable. Close battery access door.
2-55 OVER/UNDER VOLTAGE RELAY.
2–55.1
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b.
2-55.2
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b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
Inspection.
Shut down generator set.
Inspect relay for cracked casing, burned or broken terminals, and other damage.
Testing.
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.
The following procedure disables voltage regulator and allows generator to
reach an overvoltage condition. Do not allow generator set to operate for an ex-
tended period of time in an extreme over-voltage condition.
Disconnect wire 137A from AC voltage regulator, terminal 5, and insulate wire end.
Connect negative battery cable.
Start generator set. As generator accelerates to rated speed, it should instantly shut down and the OVERVOL-
TAGE lamp on malfunction indicator panel should light. If this does not occur immediately shutdown generator
set.
Reconnect wire 137A and disconnect wire 141 A from AC voltage regulator, terminal 1. Insulate wire end.
Start generator set. As generator accelerates to rated speed, the UNDER VOLTAGE lamp on malfunction indi-
cator should light. Move AC CIRCUIT INTERRUPTER switch to CLOSED position. AC circuit interrupter relay
should not close.
Shut down generator set.
Replace over/under voltage relay if generator set does not operate as above.
If no repair is needed, reconnect wire 141A at AC voltage regulator.
Raise and secure control panel.
2-84
