PS Magazine - TB 43-PS-594

PS, The Preventative Maintenance Monthly

ISSUE 594

MAY 2002
PS Magazine - TB 43-PS-594 - Page 22 of 33
PS 594
MAY 02
41
Stinger Missile System…
You
Can Repair
CFT
there goes
my CFT button
insert! that
means a trip
to the depot!
not any
more. your
repairman
can fix it!
Repair them
yourselves
like this…
1.
Position the CFT or tht on a
maintenance stand or work bench so
the insert assembly is
exposed
.
2.
Look for dings, creases and
bends on the cryo line that runs to
the insert assembly. If the line’s
damaged, the CFT must go to depot
for repair. NO PROBLEMS? MOVE ON.
5.
While holding the insert
assembly out of the way,
use pliers to turn the
button insert counter-
clockwise to remove it.
This will
release
the tension
washer. Keep
the washer.
3.
Use a
No. 0 cross-tip
screwdriver
from your tool kit
to remove the four screws, NSN
mounting cover. Keep the screws.
The mounting cover remains
attached to the insert assembly, so
you will have to rotate the cover
out of the way. Don’t force it. That
could damage the cryo line.
6.
Position the mounting
cover over the insert
assembly with the flat
part of the half-circle
hole facing the cryo line.
7.
Put the tension washer
on top of the mounting
cover with the washer’s
flat part facing the cover.
The washer’s curved part
will push up against the
button insert.
8.
Put the new button insert over
the tension washer and screw on
the insert until it’s finger tight.
9.
Rotate the insert assembly so
the mounting cover holes align with
the holes of the gas fitting mount.
4.
Lift the insert assembly off the gas fitting mount, but rotate it
no more
than 90 degrees to avoid strain on the cryo line. This will let you get at the
spring tension washer and button insert, NSN 1420-01-346-7657.
10.
Attach the insert assembly to the launch
tube with the four screws.
Reinspect
the cryo line
to make sure it
wasn’t
damaged
during the repair.
11.
Torque the screws
to 36-44 in-oz.
This procedure is
being added to TMs
9-6920-429-12,
9-1425-429-12, and
9-1440-431-23&P.
Good news,
Stinger repairmen.
You
no longer
have to send
captive flight
trainers (CFT)
and tracker head
trainers (tht)
back to depot
for
button
insert repair.
594. 40-41 (C)
3/30/02
12:47 PM
Page 1
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