ARMY TM 9-6115-639-13 AIR FORCE TO 35C2-3-386-51 MARINE CORPS TM 10155A-13/1 4-31.  GROUND FAULT CIRCUIT INTERRUPTER MAINTENANCE (60 HZ, MEP 831A ONLY) This task covers removal, inspection, and installation. INITIAL SETUP Tools: Equipment Condition: Tool Kit, General Mechanic’s Automotive Convenience receptacle removed (Para. 4-30) (Item 2, App. B, Sect. III) Cover removed from TB4 (Para. 4-25)     A.    REMOVAL. 1. Unlock main access cover latches and lift cover to open. 2. Tag and disconnect ground fault circuit interrupter  (1, Figure 4-22) wiring from terminal block TB4. 3. Remove ground fault circuit interrupter (1)  from control box by removing screws (2), washers (3), and nuts (4). B.    INSPECTION. 1. Inspect    ground    fault    circuit    interrupter    for corrosion,    evidence    of    electrical    short,    and obvious   damage.      Depress   RESET   and   TEST buttons to ensure smooth operation. 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 4-22.  Ground Fault        Circuit Interrupter 4-62