PS Magazine - TB 43-PS-720
PS, The Preventative Maintenance Monthly
ISSUE 720
NOVEMBER 2012
36
PS 720
NOV 12
37
PS 720
NOV 12
M
echanics, Black Hawk blade pin removal is not a contest of strength.
When it’s time to remove blades or blade pins, easy does it is the way to go.
Use a hoist or a blade lifting pole to lift each blade. This will relieve pressure and apply
upward force on the blade pin while leading and lagging the main rotor blade. Stop leading
and lagging the rotor blade once up and down movement in the blade pin is achieved. Now
you can slide out the blade pins without force if each blade is positioned in this way. That
makes the pins easy to remove.
For stuck pins, follow the procedures in WP 0585 of TM 1-1520-237-23-7 to locally make
a tool to remove stuck pins. Never use a mallet to remove stuck pins. Make a note that the
new style solid blade pin, NSN 5315-01-537-4652, replaces the old expandable blade pin,
NSN 5315-01-329-0707. The old pins can be used in pairs on the same blade if the solid pin
is not available. Never mix solid and expandable pins on the same blade.
Always remember when removing blade pins, slide them out. If you try to yank or force
them out, you’ll only cause damage and make it more difficult to remove them.
W
hen using the B-1 maintenance stand, there’s a little preparation that must
take place.
Not properly preparing the stand could allow it to move while you’re
carrying heavy tools. If the stand moves, your foot can slip and hit the air
temperature gage, breaking the eyebrow windows. If you lose your grip on
a wrench, it will plunge through the windows onto the center console in the
cockpit. More damage!
Properly position your B-1 stand and make sure the wheels are locked in
place. Add some chock blocks for good measure just in case the brakes slip.
You don’t want the stand to move when going up and down the steps.
So, secure the maintenance stand, maintain your footing and hang on to
your tools!
HH/UH-60A/L/M
Series…
Remove Blade Pins With Care
CH-47D/F…
Using the B-1 Stand
Follow TM to remove
stuck pin with tool
Solid pin
replaces
expandable
pin
Never
use
mallet
on
stuck
blade
pin
what the heck
are you guys
doing?
there is a
much
easier
and
safer
way to remove
blade pins!
let me get
the rest of
the Tools.
whoA!
runaway
StanD!
the stand’s
moving ‘cause
you didn’t
chock and lock
the whEels!
ugh!
oOf!
steady!
720 36-37.indd
1-2
10/2/12
2:09 PM
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