ARMY
TM 5-6115-612-12
MARINE CORPS TM 6115-12/7
AIR FORCE
TO 35C2-3-471-1
NAVY
AG-320B0-0MM-000
4-10. GENERAL. (cont)
Table 4-3.
Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
16.
GENERATOR SET REACHES READY TO LOAD BUT SHUTS DOWN WITH GENERATOR OVERTEMP
MALFUNCTION LIGHT.
WARNING
To prevent injury, ensure that
battery is
disconnected before
repairing or
replacing damaged
wires.
Step 1.
Place MASTER SWITCH in OFF position.
Disconnect connector P1
from GECM.
Check resistance across J1-D and J1-F.
If resistance is more than 10k ohms or less than 100 ohms,
refer generator set to next higher level of maintenance.
If resistance is correct,
check for shorts between GECM
interconnect points J1-D, J1-F, P1-B, P1-C and ground.
Remove or repair shorts.
If no shorts found, go to Step 2.
Step 2.
Disconnect connector P4 from EECM. Restart unit with no load.
If generator set shuts down, replace EECM (paragraph 4-64).
If unit does not shut down,
place MASTER SWITCH in OFF
position.
Disconnect battery and check for continuity
between P4-B and P4-E.
If good, refer generator set to
next higher level of maintenance for testing of generator.
If generator tests good, replace GECM (paragraph 4-30).
17.
GENERATOR SET REACHES READY TO LOAD BUT SHUTS DOWN WITH UNDERVOLTAGE
MALFUNCTION LIGHT.
Step 1.
Ensure that VOLTAGE ADJUST knob is set at mid-range.
Check
VOLTAGE meter for correct range (20-35 Vdc).
If voltage is correct, go to Step 2.
If voltage is below 20 Vdc,
check generator output cables
P107AOO (G1(+) to S4-A1) and P108AOO (G1(-) to R2-B) for
shorts.
If no shorts, replace GECM (paragraph 4-30). If
problem still exists,
refer generator set to next higher
level of maintenance for testing of generator.
4-38
