TM 9-2330-356-14
(5) Loosen three cable connectors (fig. 4-30) on
side of junction box.
WARNING
(6) Pull the two large leads through the
connectors until they are almost removed from the
When troubleshooting an electrical malfunc-
junction box.
tion or performing electrical maintenance,
ALWAYS disconnect intervehicular electrical
(7) Remove four screws (6, fig. 4-31) and
cable from semitrailer, and negative battery
washers (7) that secure mounting plate to control panel.
cables at batteries. Failure to follow this warn-
ing may create a spark and explosion, result-
(8) Tilt mounting plate (8) for access to circuit
ing in serious injury or death to personnel.
breaker mounting screws (13).
Removal.
a.
(9) Remove the two screws (13) and circuit
(1) Disconnect negative battery cable from
breaker (12).
battery (fig. 4-37).
b.
Installation.
(2) Loosen engine junction box clamp screws and
open cover.
(1) Install circuit breaker to plate with two screws
(13, fig. 4-31).
(3) Disconnect all leads from preheater solenoid
and circuit breaker (fig. 4-30).
(2) Fasten mounting plate to control panel with
(4) Disconnect lead No. 54 (fig. 4-30) that goes
four screws (6) and washers (7). Ground lead is to be
to fuel pumps from terminal strip.
installed with upper left screw.
TA502346
