-
TM
5-5420-226-20-1
Symptom-2
DETAILED
TROUBLESHOOTING
PROCEDURE
VEHICLE
OPERATION
- POWERPLANT,
STARTING
T
(Continued)
~Check
for free fuel flow from tee on main fuel
1
supply
line inengine
compartment.
First
l
l
l
l
Technician
(Engine
Compartment)
Reconnect
flexible
hose to metal
fuel supply
line.
Install
female
quick
disconnect
half to flexible
line.
Disconnect
main
fuel Iineat
tee in main
fuel line.
Place
a container
or rags under
open
fitting
to catch
any fuel.
Second
Technician
(Operators
Station)
l Set MASTER
BATTERY
switch
ON.
l Set FUEL
PUMPS
switch
ON
for a few seconds,
then
set FUEL
PUMPS
switch
OFF.
l Set MASTER
BATTERY
switch
OFF.
Did fuel flow freely
from tee of main fuel supply
,
line?
Replace
swing check
valve
(page 7-316).
v
(
QYES
FRONT
OF ENGINE
COMPARTMENT
lo
MAIN
E
TEE
SWING
CHECK
VALVE
l Clear clogged
metal fuel
supply
line by blowlng
with
compressed
air.
l Connect
main fuel line.
l If this does not work, replace
metal fuel supply
line.
TA10684O
4-151