ARMY TM 9-6115-639-13
AIR FORCE TO 35C2-3-386-51
MARINE CORPS TM 10155A-13/1
4-27. CONTROL BOX WIRING HARNESS MAINTENANCE
This task covers removal, inspection, and installation.
Tool Kit, General Mechanics Automotive
Generator set shut down (Para. 2-9)
(Item 2, App. B, Sect. III)
Battery cables disconnected
Cable disconnected for SLAVE RECEPTACLE
Unlock main access cover latches and lift cover to open.
Disconnect generator set wiring harness plug P7 from control box harness connector J7 (1, Figure 4-18),
located on rear of control box assembly.
Unlock and open control panel (2) by turning quarter-turn fasteners (3).
Tag and disconnect control box harness wires from control box components. Refer to Figures FO-3, 60Hz
Control Box Wiring Harness, and FO-4, 400 Hz Control Box Wiring Harness, for information.
Release harness connector J7 (1) from inside wall of control box by removing four screws with captive
Remove clamp (6) by removing screw and captive washer assembly (7) and washer (8). Screw (7) secures
panel cable to control box wall.
Remove clamp (9) from rear of control panel (2) by removing nut (10) and lockwasher (11). Remove
control box wiring harness (4) from control box.
Inspect harness connector J7 (1) for corrosion, evidence of electrical short, and obvious damage. Check
for bent, broken, or missing pins.
Inspect electrical wiring for cuts, crimps, bare wire, or other damage. Ensure connectors and terminal lugs
are securely attached.
Conduct continuity check on suspect wires using a multimeter. Refer to Figures FO-3 and FO-4 for wiring
diagrams and wire run lists.
Remove and replace any component that is damaged to the extent that it will effect the safe operation of
the generator set.