T.O. 35C2-3-442-2
P-9-TM-457-35
TM 5-6115-457-34
TM-07464A-35
Section II. DC CIRCUIT BREAKER BOX
6-43. CLEANING.
6-40.
GENERAL.
Clean parts with a clean lint-free
The dc circuit breaker box is located
cloth moistened in an approved cleaning
at the rear of the generator set to the right
solvent and dry thoroughly.
of the control cubicle assembly panel. The
circuit breaker box contains a 7.5 ampere
6-44.
INSPECTION.
circuit breaker CBI, associated wiring, and
a connector for electrical connection to the
Inspect dc circuit breaker box com-
generator set dc system. 400 hertz genera-
ponents as follows:
tor sets also include an expanded scale
voltmeter and generator/bus selector switch,
a. Inspect sheet metal parts for dents,
used for paralleling operations. Circuit
cracks, and distortion.
breaker CB1 is electrically connected be-
tween the batteries and the START-RUN-
b. Inspect connectors for bent, broken,
STOP switch S2 in the dc system. It pro-
and missing pins. Refer to table 6-2 and
tects all control circuits energized from
test wires and connectors for continuity,
the batteries except those for the winteriza -
shorts to case and surrounding pins. Check
tion heater and dc alternator. In the close
terminal lugs for condition and security.
position the pushbutton only shows black.
When tripped, the button is extended and
c. Check circuit breaker automatic
the white portion is visible.
tripping with load application above 7.5
ampere.
6-41.
REMOVAL.
6 - 4 5 . REPAIR.
Refer to Operator and Organizational
Maintenance Manual and remove dc circuit
Repair defective wiring in accordance
breaker box.
with table 6-2.
6-46. REASSEMBLY.
DISASSEMBLY.
6-42.
Refer to figure 6-9 and reassemble
Refer to figure 6-9 and disassemble
dc circuit breaker box in the reverse order
dc circuit breaker box in the order of index
numbers assigned. Pay particular attention
of index numbers assigned. Pay particular
attention to the following:
to the following:
a . Install connectors (5 and 5D) with
a . Remove screws (1) and separate
keyway up.
cover (6) and chassis (10) so that wires can
be disconnected from circuit breaker (9).
INSTALLATION.
6-47.
and expanded scale voltmeter (9G).
Refer to Operator and Organizational
Maintenance Manual and install DC circuit
b. Tag and disconnect electrical wiring
breaker box.
from circuit breaker and voltmeter.
Change 3
6-20
