,..
TM 5-5420-226-20-1
(
Symptom-1
1
DETAILED
TROUBLESHOOTING
PROCEDURE
VEHICLE
OPERATION
- POWERPLANT,
RUNNING
(Continued)
Check for fuel flow at inlet side of fuel backflow
valve.
First Technician
(Front of Engine)
l Disconnect primary fuel filter outlet hose from
backflow valve inlet.
l Place suitable container under hose.
Second Technician
(Operators
Station)
l Set FUEL PUMPS switch ON for a few seconds,
then OFF.
l Set MASTER BATTERY switch OFF.
First TechnicIan
(Front of Engine)
l Check if fuel flows freely into container.
Does fuel flow freely?
1
PRIMARY
FUEL
FILTER
TO BACKFLOW
VALVE
HOSE ASSEMBLY
FUEL BACK-
FLOW
VALVE
\
\
(
I
Replace
fuel backflow
valve
(page 7-25).
-
TA106964
4-275
.