threads and bent, loose, or missing
Inspect connections for security and
Inspect wiring for defective insulation.
Test. Perform continuity check, using
ohmmeter between connecting points in the
wiring harness. (See FO-5, AC-DC Control
Box, Wiring Diagram.) Check for short
circuits between connector pins of the same
receptacle or terminal board.
If a broken wire is accessible,
remove sufficient insulation from each
side of the break to allow a good
connection of the bared ends by
twisting them together. Solder the
connection and wrap with electrical
If a wire is broken from a terminal lug,
replace the lug. If a wire is broken
Under no condition leave the bare
If a break in the wire is inaccessible
within the wiring harness, disconnect
it at both ends and tape both ends.
Lace a new lead of the same gauge
and insulation outside the harness
and connect it to the proper terminals
or pins. Properly tag both ends of all
If more than 30 percent of the harness
wires are defective, refer to next
higher maintenance for replacement.
4-39. WEATHER STRIPPING
Inspection. Inspect weather stripping (5,
figure 4-17) around cover (7), AC-DC
control panel (3) and seal (74) on door (73)
for signs of excessive wear, rot, or damage.
Replacement of Weather Stripping.
screws (71) and nuts (72).
Remove seal (74) from door (73).
Remove weather stripping (5) from
AC-DC box (70) and enclosure (75),
AC-DC control panel (3) or cover (7).
Install four pieces of fresh weather
stripping (5) on AC-DC box (70) and
enclosure (75), panel (3) or cover
Install new seal (74) on door (73).
Reinstall door (73), screws (71) and
Section XII. MAINTENANCE OF CONTROL CUBICLE
4-40. The control cubicle contains four major
assemblies, the engine control panel (see figure 4-21),
the generator control panel (figure 4-22), the component
shelf (see figure 4-20, sheet 2) and the rear relay panel
(see figure 4-20, sheet 3).
Inspect two lamps on engine panel,
and four lamps on generator panel.
Inspect transducers, relays, and time
delay modules for looseness and poor