TM 5-6115-627-14&P
Figure 4-13. Power Cable Wiring Diagram.
4-28. Switch Box Testing. The power plant switch box assembly is tested by performing a series of
continuity checks on the component parts and internal wiring.
NOTE
All internal switch box wiring is labeled for identification with reference designations of its
points of connection. If labeling has been removed, or is illegible, tag wires for
identification before removing them.
typical for both.
a. Switch Testing. The switch box contains two three-pole, single-throw switches. Testing procedures are
WARNING
To avoid risk of injury or death by electrocution, do not remove switch box access cover
(1)
(2)
(3)
(4)
4-28
while either power unit is still connected to switch box.
Remove 24 screws, 24 Iockwashers, and 24 flat washers securing access cover to switch box and
remove cover.
Set multimeter controls to prepare unit for continuity testing.
Set switch being tested to ON position.
NOTE
Observe that the switch terminals are arranged in two rows of three terminals each. Each
terminal is paired with the one directly above or below it. There is one pair of terminals
for each pole of the switch.
Select any pair of terminals associated with same pole of switch. Touch one multimeter test probe to
each terminal. Multimeter must indicate continuity.
