ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
SectIon Il. MAINTENANCE OF CONTROL BOX ASSEMBLY
4-2. CONTROL BOX HARNESS
Shut down generator set.
Open left side engine access door and disconnect negative battery cable.
Remove control box top panel, paragraph 2-16-1.
Open storage box access door and disconnect three electrical connectors at bottom of control box.
Remove crank disconnect switch, paragraph 2-32-3.
Remove relays, paragraph 2-33-3.
Remove screws (1, Figure 4-10), washers (2), insulators (3), clips (4), and sockets (5) from track (20).
Remove screws (6) and nuts (7) to free terminal board (8).
Remove screws (9), nuts (10), and cap (11) to free diagnostic connector (12).
Tag and disconnect electrical leads at AC voltage regulator (21, Figure 2-11), shunt (27), BATTERY CHAR-
GER FUSE assembly (17), DC CONTROL POWER circuit breaker (19), overvoltage relay (30), frequency
transducer (24), short circuit/overload relay (33), resistor-diode assembly (39), CONVENIENCE RECEP-
TACLE (5) and GROUND FAULT CIRCUIT INTERRUPTER (8).
Disconnect electrical connector (13, Figure 4-10) to malfunction indicator (12, Figure 2-11) panel.
Tag and disconnect electrical leads to all indicators, switches, and lights on control panel.
Remove screws (14, Figure 4-10) and nuts (15) to free harness connectors (16), (17), and (18).
Remove harness assembly (19) from control box.
Inspect control box harness wiring for breaks, damaged insulation, and loose or damaged terminals.
b. Inspect harness connectors, sockets, and terminal board for cracks, corrosion, stripped threads, broken pins,
and other visible damage.
4-2-3. Testing. Using Wiring Diagram FO2 as a guide, check all wires for continuity with multimeter.
Replace damaged cable assemblies, terminals, connectors, sockets, or terminal board.
Replace or ensure proper connection of all wires not indicating continuity.