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
13.
GENERATOR REACHES READY TO LOAD BUT SHUTS DOWN WITH OVERSPEED MALFUNCTION
LIGHT WHILE STILL IN NO LOAD.
Step 1.
Ensure that generator set has not run out of fuel.
Fill fuel tank.
Step 2.
Determine if there was a noticeable change in engine RPM prior
to shutdown.
This condition can be identified by a change in
pitch while engine is running.
If RPM increased,
perform maintenance on monopole speed
sensor (paragraph 4-65).
If speed sensor OK, replace EECM
(paragraph 4-64).
If RPM decreased,
inspect all fuel fittings for leaks
(paragraphs 4-35, 4-36). Tighten as necessary. If problem
still exists, replace high pressure pump (paragraph 4-41).
14. GENERATOR SET REACHES READY TO LOAD BUT SHUTS DOWN WITH OVERLOAD MALFUNCTION
LIGHT WHILE STILL IN NO LOAD.
WARNING
To prevent injury, ensure that
battery is
disconnected before
repairing or
replacing damaged
wires.
Step 1.
Monitor VOLTAGE and OUTPUT CURRENT meters with generator set
running at READY TO LOAD and CONTACTOR switch set at OPEN.
If VOLTAGE meter reads 20-35 Vdc and OUTPUT CURRENT meter
reads 0, go to Step 2.
If VOLTAGE reads other than 20-35 Vdc or if OUTPUT CURRENT
meter reads other than 0,
following wires for damage,
U109A18 (R2-D to TB3-14)
U110A18 (R2-C to TB3-13)
U109C18 (TB3-14 to P2-J)
U110C18 (TB3-13 to P2-K)
check current shunt R2 and the
shorts, and continuity.
P107B18 (S4-A1 to S4-23)
P106A18 (S4-B1 to S4-13)
U113A18 (TB3-7 to S4-22)
U114A18 (TB3-8 to S4-12)
4-36
