ARMY TM 9-6115-639-13
AIR FORCE TO 35C2-3-386-51
MARINE CORPS TM 10155A-13/1
4-53. DC MAGNETIC CONTACTOR 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.
Remove two DC magnetic contactors (7, Figure 4-48) from wall of enclosure (8) by removing screws (9),
washers (10), and locknuts (11).
Tag and disconnect electrical wires (1, 2) from DC magnetic contactors (7) by removing nuts (3, 5) and
washers (4, 6). Remove voltage suppressors (12).
Inspect DC magnetic contactors for obvious damage. Inspect for corrosion and evidence of electrical
Inspect electrical wiring for cuts, crimps, bare wire, or other damage. Ensure terminal lugs are securely
Remove and replace any component that is damaged to the extent that it will effect the safe operation of
the generator set.
Connect electrical wires (1, 2, Figure 4-48) and voltage suppressors (12) to DC magnetic contactors (7)
using nuts (3, 5) and washers (4, 6).
Mate two DC magnetic contactors (7) to the rear wall of enclosure (8). Secure using screws (9), washers
(10), and locknuts (11).
Close main access cover and lock in place using latches.