PS Magazine - TB 43-PS-613

PS, The Preventative Maintenance Monthly

ISSUE 613

DECEMBER 2003
PS Magazine - TB 43-PS-613 - Page 20 of 33
SGT Andres Chamorro Jr.
MAARNG (AASF)
PS 613
DEC 03
37
UH-60A/L…
Dear Sergeant Blade,
We have problems performing
maintenance on the Black Hawk
main rotor blade spindle droop stop
With 570 to 630 lb-in of torque,
it’s one tough cookie to remove
and install.
The initial setup tool list for the
spindle in TM 1-1520-237-23-3
does not list an adequate tool with
enough grip to get the droop nut
off the spindle.
A spanner wrench, which we
often use to remove or install the
nut, slips off. The wrench is also
used to torque the nut, but it can
give a wrong torque setting.
Most
mechanics usually end up with bust-
ed knuckles and a damaged alu-
minum droop stop nut.
We’ve solved the problem with a
tool made of flat rolled steel, NSN
teeth and a centered square hole
for a torque wrench or a breaker
bar for easy droop stop nut
removal and installation.
We make the tool like so:
After we’ve removed the
spindle like the TM says in Para
5-4-5 and clamped it down
for disassembly, we use the
tool to remove or install the
droop stop nut following the
TM procedures.
Anchor spindle
and slip on tool
Position tool
on droop
stop nut to
remove
oh, no!
not the
droop
stop nut
again!
last time
we did this,
I banged up
my knuckles
so bad…
…they
looked like
I’d been in
a fist fight.
it works
better’n a
spanner
wrench!
Good work!
Another SMART
idea from a
smart mechanic
that’ll save
time, and
money, as well
as prevent
injuries.
M
echanics, you can’t see the wind but you
sure feel it when it’s blowing. And wind or
rotor wash can do a number on loose Apache
APU access doors and drive shaft panel doors.
Panels doors left open and not tied down
will flail around in high wind and can crack
the door’s ribbing.
When performing inspections in high
winds, make sure the panel doors are tied off
with 550 cord, NSN 4020-00-240-2146 or
lock wire so they won’t bounce around.
AH-64D…
Inspect panel doors
for cracks
hey, folks!
check out this
new tool!
we doors
need to get
tied down!
I’ll go
get some
cord!
613. 36-37 (C)
11/3/03
4:20 PM
Page 1
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