ARMY TM 9-6115-639-13 AIR FORCE TO 35C2-3-386-51 MARINE CORPS TM 10155A-13/1 4-21.  DC CIRCUIT BREAKER MAINTENANCE This task covers removal, inspection, and installation. INITIAL SETUP Tools: Equipment Condition: Tool Kit, General Mechanic’s Automotive Generator set shut down (Para. 2-9) (Item 2, App. B, Sect. III) Battery cables disconnected Cable disconnected for SLAVE RECEPTACLE A.    REMOVAL. 1. Turn  quarter-turn  fasteners  (1,  Figure  4-12)  to unlock and open control panel (2). 2. Tag and disconnect electrical wiring from the rear of DC CIRCUIT BREAKER switch (3). 3. Remove   DC   CIRCUIT   BREAKER   switch   (3) from control panel (2) by removing attaching nut (4) and lockwasher (5). B.    INSPECTION. 1. Inspect   DC   CIRCUIT   BREAKER   switch   for corrosion and obvious damage. 2. Inspect  electrical  wiring  for  cuts,  crimps,  bare wire,  or  other  damage.    Ensure  connectors  are securely attached. 3. Remove   and   replace   any   component   that   is damaged  to the extent that it will effect the safe operation of the generator set.     Figure 4-12.  DC CIRCUIT BREAKER C.    INSTALLATION. 1. Mate DC CIRCUIT BREAKER switch (3, Figure 4-12)  to  rear  of  control  panel  (2).    Secure  using nut (4) and lockwasher (5). 2. Connect   electrical   wiring   to   the   rear   of   DC CIRCUIT BREAKER switch (3). 3. Close  control  panel  (2)  and  lock  in  place  using quarter-turn fasteners (1). 4-43