PS Magazine - TB 43-PS-554
PS, The Preventative Maintenance Monthly
ISSUE 554
JANUARY 1999
PS 554
14
JAN 99
oaders, empty shell
casings can
pack a
wallop when they hit
the spent ammunition
frame in your M1-
series tank. It takes
good PM on your
part to keep the frame
rolling with those
punches.
Make your first
stop the pins that
connect the frame to
the spent ammunition
screen guard.
Both pins are held in place with cotter pins,
NSN 5315-01-390-7088. Over time, the con-
stant impact of the shell casings will break or
loosen the cotter pins. When the cotter pins
fall out, so do the frame pins. The frame can’t
contain the shell casings.
Keep an eye on the cotter pins. If they’re
loose, tighten ’em. If they look worn or dam-
aged, replace ’em.
Your second stop is the pivoting bars on
the
frame’s flipper and shield. Moisture from condensation and washing lead to
rust, which freezes the flipper and shield in place. You end up with shell casings
everywhere but where they should be.
Have your mechanic replace any bars
that are badly rusted. NSN 5340-01-
185-9634 gets the flipper bar. The
guard bar is NSN 5340-01-185-9635.
The bars should get a light coat of
PL-M before installation and again dur-
ing semiannual maintenance. That
keeps everything moving smoothly.
Lube bars semiannually with PL-M
M1-Series Tanks . . .
Check cotter pins for wear
look out!
runaway shell
casing!
maybe now
i’ll get some
spent ammo
frame pm!
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