.,
TM5-5420-226-20-1
Symptom-1
1
DETAILED
TROUBLESHOOTING
PROCEDURE
VEHICLE
OPERATION
- POWERPLANT,
RUNNING
T
(Continued)
YCheck
backflow valve outlet hose for blockage.
~
I
First Technician
(Front
of Engine)
1
I
l Disconnect backflow valve outlet hose from
backflow valve.
I
I
l Blow air thru backflow valve outlet hose.
I
FUEL BACK
FLOW VALVE
\
n
Is backflow valve outlet hose blocked?
ENGINE
DRIVEN
\
BACKFLOW
FUEL
VALVE
PUMP
OUTLET
HOSE
Replace backflow
valve outlet
hose if blockage
cannot
be
removed
(page 7-40).
.
TA106963
4-274