PS Magazine - TB 43-PS-638

PS, The Preventative Maintenance Monthly

ISSUE 638

JANUARY 2006
PS Magazine - TB 43-PS-638 - Page 5 of 33
T
ACOM reports that the number of requisitions for the old configuration of the
M1A1 tank’s driver’s alert panel (DAP), NSN 2510-01-073-0020, is pretty high,
especially from Southwest Asia.
“So what?” you might ask.
Well, the old DAP was designed for use on tanks that
have not
been equipped
with the driver’s hatch interlock (DHI). And since all active Army tanks should have
had the DHI installed with MWO 9-2350-264-50-11, demand for the old DAP
should actually be going down.
Figs 114 and 115 of TM 9-2350-264-24P-1 (Mar 03) list both DAPs, but don’t
make a clear distinction between the two configurations. That, combined with the
number of orders for the old DAP, makes it likely that some units are ordering the
wrong panel.
For active Army tanks
that have the DHI
installed, order DAP,
National Guard and war
reserve tanks that have
not
been modified with
the DHI should continue
to use the old configura-
tion DAP.
Use driver’s alert panel, NSN 2510-01-459-1662,
on tanks with DHI installed
PS 638
JAN 06
7
M1A1 Tank…
Solving the Panel Puzzle
PS 638
JAN 06
6
M1-Series Tanks…
New Wrench Brings Relief
T
ightening the king and thrust nuts during a tank’s gun tube replacement requires
a
minimum
of 1,000 lb-ft of torque.
Problem is, the current torque wrench, NSN 5120-00-555-1521, has a
maximum
range of 1,000 lb-ft. The strain can break the wrench or apply too little torque.
And if you don’t follow the gun tube replacement procedure exactly as it’s out-
lined in the TMs, the piston won’t seat properly against the breech ring and the main
gun won’t maintain accuracy.
A new torque wrench, NSN 5120-
01-355-1827, with a maximum range
of 1,500 lb-ft, is now available. Pencil
in the replacement NSN as Item 167
on Page D-6 of TM 9-2350-264-34-2-
2, Item 98 on Page D-5 of TM 9-
2350-288-34-2-2, and Item 96 on
Page D-5 of TM 9-2350-388-34-2-2.
New torque wrench
has maximum range
of 1,500 lb-ft
one
potato…
two
potato…
three
potato…
…four!
what
the heck’s
jones
doing?
she’s trying to
decide which
driver’s alert
panel to order
for that tank!
argh!
my torque
wrench
broke!
it can’t handle the
strain of torquing
your main gun’s king
and thrust nuts!
good
news!
there’s
a
new
torque
wrench
available for
those nuts!
638.06-07(C).qxd
12/5/05
10:06 AM
Page 1
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