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
Section XI. MAINTENANCE OF AC-DC CONTROL BOX ASSEMBLY
4-28. GENERAL. This section contains inspection,
test, and replacement information for the AC-DC Control
Box Assembly. See figure 4-17, 4-18 and 4-19 and
proceed as follows:
Gain access to the components of the AC-
DC Control Box by loosening six captive
screws on the AC-DC control panel (3,
figure 4-17). Use the top and bottom
latches to release and open the side door
(73, figure 4-17) to the AC-DC Control Box.
Inspection. Inspection components of the
AC-DC Control Box Assembly for defective,
broken, or cracked components. Inspect
wiring for loose connections.
Testing. Testing of components of the AC-
DC Control Box Assembly is described
under the appropriate heading in paragraphs
4-29 through 4-35.
Repair. Repair by replacement of
components which do not function properly
during testing. Small dents in the control
panel may be hammered out and refinished.
Set MAINTENANCE LOCKOUT switch to
LOCKOUT. Disconnect negative cable
from batteries. Remove external power.
Load terminals of generator set circuit
breaker (CB2 may still be energized with
Replacement. Replace components which
do not function properly in step c (Testing)
Replace control panel (3) by first loosening
six captive screws, then tag and disconnect
leads and remove screws (1). Install new
cover panel by installing panel using screws
(1), then reconnect leads, remove tags, and
tighten captive screws.
4-29. CIRCUIT BREAKER CB103 (42, figure 4-18)
Place circuit breaker switch to the ON
At the rear of the panel, remove leads
from one side of circuit breaker.
With an ohmmeter (Rx1 scale), test
circuit breaker for closed contacts. If
replace circuit breaker.
Place circuit breaker in OFF position
(open). Using ohmmeter on Rx1
scale, test circuit breaker for open
contacts. If meter indicates a closed