TM 5-3810-307-24-1-1
Electrical Control Box Assembly
DESCRIPTION
batteries through the NATO slave receptacle. When
The emergency stowage system electrical control
the switch is moved to ON, power is sent to the
box assembly is comprised of an ON/OFF control
power relay which closes and transfers battery
switch, a 400 amp power relay, two 44 joules metal
power to operate the electric motor to drive the
oxide varistor (MOV) assemblies, and a wiring
hydraulic pump. The switch can also be powered by
harness to connect the control switch to the relay.
an external 24 VDC source connected to the NATO
The control switch receives power from the vehicle's
slave receptacle.
MAINTENANCE
REPAIR.
REMOVAL.
WARNING
1.
Disassemble electrical control box (4, Figure 2-
15-3) as necessary to replace worn, damaged, or
If it should become necessary to perform
defective components:
electrical maintenance on live or hot cir-
cuits, remove all rings, watches, and other
a.
Remove nuts (5 and 6), then tag and
jewelry before performing maintenance as
remove MOV assemblies (7) and
serious burns result from accidental
electrical wires from power relay (11).
grounding or shorting circuits.
b.
Remove nuts (8), washers (9), screws
WARNING
(10), and power relay (11) from control
box (4).
Ensure the batteries are disconnected
before per-forming any maintenance on
c.
Tag and disconnect electrical wires from
an electrical circuit.
ON/OFF switch (14).
CAUTION
d.
Remove nut (12), switch guard (13), and
switch (14) from control box (4).
Never replace original wiring with wiring
of a smaller diameter.
2.
Assemble electrical control box (4, Figure 2-
15-3) as necessary:
1.
Ensure battery disconnect switch is in OFF
position.
a.
Install ON/OFF switch (14) and switch
guard (13) in control box (4) with nut
2.
Tag and disconnect electrical cables from 1/2
(12).
in. terminals of power relay (11, Figure 2-15-3), and
pull cables from control box (4).
b.
Connect electrical wires to switch (14)
3.
Remove locknuts (1), washers (2), capscrews
and remove tags.
(3), and control box (4) from vehicle mounting plate.
c.
Install power relay (11) in control box (4)
with screws (10), washers (9), and nuts
(8).
d.
Install MOV assemblies (7) and electrical
wires on power relay (11) with nuts (5
and 6). Remove tags.
