4-10. GENERAL. (cont)
ARMY
TM 5-6115-612-12
MARINE CORPS TM 6115-12/7
AIR FORCE
T0 35C2-3-471-1
NAVY
AG-320B0-0MM-000
Step. 1 When READY TO
OPEN position
ADJUST knob is
If voltage
(paragraph 4-30)
LOAD light comes on,
place CONTACTOR switch in
and monitor VOLTAGE meter.
Ensure that VOLTAGE
adjusted to mid-range.
indicated is greater than 35 Vdc, replace GECM
and repeat Step 1. If generator set still
Table 4-3.
Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Replace damaged or shorted wires. If problem still exists,
replace GECM (paragraph 4-30).
Step 2.
Disconnect connector P4 from EECM.
Restart generator set. Do
not apply load.
If unit shuts down, replace EECM (paragraph 4-64).
If unit does not shut down,
place MASTER SWITCH in OFF
position.
Check for shorts and continuity between P4-C and
P4-E.
Repair or replace as required. If wires OK, replace
GECM (paragraph 4-30).
15.
GENERATOR SET REACHES READY TO LOAD BUT SHUTS DOWN WITH OVERVOLTAGE
MALFUNCTION LIGHT.
WARNING
To prevent injury, ensure that
battery is
disconnected before
repairing or
replacing damaged
wires.
shuts down,
refer generator set to next higher level of
maintenance for testing of generator.
If voltage
indicated is less than 35 Vdc, shut down
generator set and allow generator set to cool. Disconnect
connector P4 from EECM.
Place MASTER SWITCH in RUN
position.
If OVERVOLTAGE malfunction indicator light comes
on,
replace EECM.
If OVERVOLTAGE malfunction indicator
light stays off,
disconnect battery cable plug connector
and check wire U138A18 (P4-B to P2-B) for continuity and
shorts.
Repair or replace as necessary. If problem still
exists,
replace GECM (paragraph 4-30).
If generator set
still shuts down, refer generator set to next higher level
of maintenance for testing of generator.
4-37
