TM 5-5420-226-20-1
-
Symptom-2
DETAILED
TROUBLESHOOTING
PROCEDURE
VEHICLE
OPERATION
- POWERPLANT,
STARTING
(Continued)
T
MASTER
BATTERY
SWITCH
/
Check
if fuel tanks
electrical
fuel pumps
are
running.
Second
Technician
(Operators
Station)
l
l
l
First
l
l
Set MASTER
BATTERY
switch
ON.
Set FUEL
PUMPS
switch
ON.
Listen
for sound
of right
fuel tank
electrical
fuel
pump
running.
Technician
(Rear
Grille
Doors)
Open
rear
grille
doors.
Listen
for sound
of left fuel tank
electrical
fuel
pump
running.
Are both fuel tanks
electrical
fuel pumps
running?
\
MASTER
CONTROL
PANEL
RIGHT
FUEL PUMP
FOR CLARITY
QUADRANT
ASSEMBLIES
NOT SHOWN
)
l If only one pump is not
running,
See Symptom
5:
ONE ELECTRICAL
FUEL
PUMP WILL
NOT WORK.
l If both pumps are not
running,
See Symptom
6
BOTH
ELECTRICAL
FUEL
PUMPS
WILL
NOT WORK.1
TA1068O8
4-119
.