TM
5-5420-226-20-1
DETAILED TROUBLESHOOTING
PROCEDURE
SUPPORT SYSTEM - FIRE EXTINGUISHERS
Symptom-52
(Continued)
/ check second shot control valve for extension
of
pin when control valve handle
is turned.
Second
Technician
(Front
of Crew
Compartment)
l
l
l
Return
second
shot
control
valve to SET
position,
if
not
in SET
position,
Remove
control
valve safety
pin and
turn
handle
on
valve clockwise
until
it stops.
Check
if pin on bottom
of control
valve extends
1/8
inch (.31;5
cm).
Did control valve operate freely and extend the pin
1/8 inch (.3175
cm)?
r
l Repair second shot control
valve (page 20-51).
l Installsafety wire and lead
seal on interior release
mechanism.
oNO
1
~
SA=TYPIN
CONTROL
VALVE
m[REMOVEDFOR
&&
CLARITY
e
G
@Q
HANDLE
CONTROL
VALVE
SAFETY
Ply
TA107247
4-558