4-25. CIRCUIT BREAKER JUNCTION BOX REPLACEMENT.
This Task Covers:
l Circuit breakers removed (para 4-23).
l Marker tags (Item
l Blackout light electromagnetic relay removed
l General mechanics tool kit
15, Appendix E)
Ail circuit breaker junction boxes are replaced in the same manner. The quantities of
mounting hardware, circuit breakers, wire leads, etc. will vary between models. M313
(Early Model) is shown.
Disconnect and tag all internal electrical leads (2) from junction box (l).
Remove ail external conduit connections (3) from junction box (l). Pull electrical leads (2) out of junction box.
Remove junction box attaching screws (4) as required, and then remove junction box (1) from rear wall of
Position junction box (1) in place on rear wall of semitrailer and line up mounting holes.
install junction box attaching screws (4) as required, to secure junction box (1) to rear wall of semitrailer.