TM 9-2330-246-14
4-16. CIRCUIT BREAKER BOX, CONDUIT, AND FITTINGS REPLACEMENT (M348A2H)
(Con't).
b. INSTALLATION
1.
Position lower circuit breaker box (10) with nipples (14 and 18) and elbow (11) through holes in box. Install lower
circuit breaker box using four screws (9), eight flatwashers (8), and new locknuts (7).
Install inner bondnut (20) and nut (21) on nipple (18).
2.
Install inner bondnut (15) and nut (16) on nipple (14).
3.
Install inner bondnut (12) and nut (13) on elbow (11).
4.
Install two outer bondnuts (24 and 26) on nipple (25).
5.
Install nipple (25) in top of lower circuit breaker box (10). Secure with inner bondnut (23) and nut (22).
6.
Install elbow (30) in upper circuit breaker box (5).
7.
Position upper circuit breaker box (5) with nipple (25) through hoe in bottom of box. Install upper circuit breaker
8.
box using four screws (4), eight flatwashers (3), and new locknuts (2).
Install inner bondnut (27) and nut (28) on nipple (25).
9.
10.
Pull wiring through conduit and nipples and into upper and lower circuit breaker boxes (5 and 10).
11.
Connect wires to circuit breaker (17) and terminal board (19). Remove tags. Close hinged door of lower circuit
breaker box (10).
Connect wires to circuit breaker (6) and terminal board (29). Remove tags. Close hinged door of upper circuit
12.
breaker box (5).
13.
Connect conduit (1) to elbow (30).
FOLLOW-ON TASKS:
Connect 110-volt power to semitrailer.
q
Check operation of air conditioner and lighting.
4-25