PS Magazine - TB 43-PS-674
PS, The Preventative Maintenance Monthly
ISSUE 674
JANUARY 2009
26
PS 674
JAN 09
Dear Editor,
Sometimes 60mm and 81mm mortars are being condemned too soon
because erosion looks worse than it really is.
TM 9-1000-202-14,
Evaluation of Cannon Tubes
, tells you to
check for erosion by borescoping around the firing pin protrusion area. The
borescope’s magnification can make erosion look worse than it is.
For the tube to be condemned, the erosion must be more than .010 inch in
depth regardless of length. To make the measurement, follow the procedure in
the “Difficult Inspection” section for the particular tube.
If you’re still not sure if the tube should be condemned, contact your local
TACOM logistics assistance representative or TACOM’s Joe Schmidt, DSN
793-3369/(309) 782-3369. But make sure the tube has a real erosion
problem before you condemn it. The tubes aren’t cheap and you need to use
them as long as possible.
Bob Foley
TACOM Logistics Assistance Representative
Vilseck, Germany
Editor’s note:
You can fnd TM 9-1000-202-14 on EM 0069 and on the
LOGSA ETM site:
Thanks For the tip
!
Mortars…
Not as Bad as It Looks
hey,
wait a
dadgummed
minute!
my erosion’s
not
that
bad!
I’ve got real
shootin’
left in me!
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