TM 9-2320-273-20
CIRCUIT BREAKERS AND WIRING.
5-30.1 CIRCUIT BREAKER MAINTENANCE (M917, M918, AND M919) (CONTINUED).
LOCATION/lTEM
ACTION
REMARKS
A. REMOVAL (Continued).
1. Three quarter turn screws (1).
Loosen.
2. Circuit Panel cover (2).
Lower.
3. Two screws (7).
Remove from circuit breaker
bracket (3).
4. Three locknuts (9) and two
a. Unscrew from diode (4) or Only one flat washer (8) is
flat washers (8).
circuit breaker (6).
used when a bus bar (5) is
b. Remove wire terminals.
present.
c. Remove diode (4) or
Also remove bus bar (5)
circuit breaker (6).
if used.
B. INSTALLATION.
5. Diode (4) or circuit breaker
a. Install in circuit breaker
Install per illustration, assuring
(6).
bracket (3).
the copper terminal stud is on
b. Position bus bar (5) if used. top and the silver is on the
c. Install wire terminals.
bottom.
Ensure wire terminals are
connected to the correct circuit
breaker or diode and to the
correct color terminal stud.
d. Secure with two flat
Only one flat washer (8) used
washers (8) and three
when a bus bar (5) is present.
locknuts (9); torque each
locknut to 18-22 lb-in.
(2.0-2.5 N•m).
6. Circuit breaker bracket (3).
a. Aline mounting holes.
b. Secure with two screws (7).
7. Circuit panel cover (2).
Raise into position.
8. Three quarter turn screws (1).
Tighten.
9. Batteries.
Connect per paragraph 5-37 B.
C. OPERATIONAL CHECK.
10. Circuit breaker (6) or
diode (4).
Refer to paragraph 2-34 and
2-35; check the operation of
the circuit breaker or diode
replaced.
5-90.2
