TM 5-5420-226-20-1
(
DETAILED
TROUBLESHOOTING
PROCEDURE
VEHICLE
OPERATION
- POWERPLANT,
STARTING
(Continued)
Symptom-7
. T
Check for free fuel flow at inlet side of engine fuel
pump.
1
First
Technician
(Rear
of Crew
Compartment)
l Connect
fuel hose
to backflow
valve.
l Loosen fuel hose from backflow
valve
to fuel pump
at fuel pump.
l Place a container
under
hose
to catch
any fuel.
Second
Technician
(Operators
Station)
l Operate
primer
pump.
4
Does fuel flow freely from hose at engine fuel
pump?
m
PFUELPUMP
\
FUEL
HOSE
92
Clear clogged hose between
Ibackflowvalve and engine fuel
pump by blowing with
compressed
air. If this does
4-203