PS Magazine - TB 43-PS-574
PS, The Preventative Maintenance Monthly
ISSUE 574
SEPTEMBER 2000
Dear Editor,
Removing the Black Hawk’s input module quill seal is tricky business.
The procedure in TM 1-1520-237-23-4 takes up to 4 hours to do, and
grounds the aircraft for 24 hours. If you’re not careful, you can damage
the seal housing, the input flange, and possibly your knuckles.
But, we’ve come up with a tool that lets us do the job in 1 hour,
doesn’t damage the seal housing and only grounds the aircraft for the
time it takes to do the job. Any AVIM shop can make the tool. You make
it like so:
UH-60 . . .
Good work. This special tool should
save repairmen lots of time.
Once the tool’s made, use it like this:
1. Turn the hooks 90
°
and insert them into the gap around the seal.
While the hooks are in place behind the seal, turn them back 90
°
and
lock them into the pulling plate.
Locking
collar
Jack screw (typical)
Pulling plate
Center
section
Quill seal removal tool
This end of the wire is
filed square, with the
ends of all four pulling
hooks made to equal
length.
The purpose of this double bend is to turn the hook for insertion,
and then to lock the hook behind the seal. It then serves to lock
the hook into the pulling plate during the pulling procedure. The
hook and double bend are in the same plane
and facing the same direction.
The end of .063
stainless steel
welding rod is bent
back on itself 180
degrees, then TIG
welded in place.
The hook is then
filed flat to a width
of .055–.058.
• The pulling plate and locking collar are made from 4 x
1
/
2
-in 6061-T6
aluminum bar stock.
• The center section is made of 1-in aluminum round stock.
• The pulling plate has four pulling hooks made out of
1
/
16
-in stainless
steel welding rod and placed at 90
°
intervals. The holes are spaced
1 inch apart around the pulling plate.
• The jack screw is a
1
/
2
x 8-in bolt.
2. Turn the locking collar down on the double bends until snug.
3. Finally, turn the jack screw to remove the seal.
SPC Joel L. Zinne
K Co, 158th Avn
Ft Carson, CO
Quill
seal
Not all details shown. Not to scale.
Pulling
hooks
instead of
down
and
out
,
i'll be
up
and
flying
!
with this
new tool
, i can
fix
your quill
seal a lot
quicker!
PS 574
38
SEP 00
SEP 00
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