PS Magazine - TB 43-PS-689
PS, The Preventative Maintenance Monthly
ISSUE 689
APRIL 2010
4
PS 689
APR 10
Dear Editor,
Some time back, we noticed a problem with interference between one
screw on the Bradley’s bolt-on armor and a second screw on the TOW
launcher when it’s positioned at maximum elevation.
The first screw is the upper left
1
/
2-in mounting screw on the turret
armor plate, NSN 9515-01-268-3375. The second is a
3
/
8-in screw
on the fourth upper hole of the TOW launcher’s armor plate, NSN 1005-
01-110-7641.
The problem exists only on Bradleys that have forged turrets. Forged
turrets are thicker than welded ones, so when armor plate is installed,
the mounting hardware on these turrets is closer to the TOW launcher.
That results in the interference between the two screws.
The fix for the problem is fairly simple:
1.
You must determine whether the turret is forged or welded. Look at the
point where the two bolt-on armor plates, NSN 9515-01-267-8108 and
NSN 9515-01-268-3375, meet.
If the two plates overlap, do nothing. The turret is welded and you won’t
have the screw interference problem. If the two plates
don’t
overlap, the
turret is forged. Go on to Step 2.
2.
Check the screws attaching the armor plate, NSN 1005-01-110-7641,
to the TOW launcher. Earlier versions of this armor plate used countersunk
holes for the screws.
If the screws on the TOW launcher armor are countersunk, stop
now. There is no interference problem. However, if the screws
aren’t
countersunk, continue to Step 3.
Running Interference
for TOW Launcher
M2/M3-Series Bradleys…
Running Interference
for TOW Launcher
metal-to-metal
contact between
your bradley’s
turret and tow
launcher
is not
a good thing!
you said it,
half-mast!
Plates on welded turret overlap…
…while plates on forged turret do
not
Countersunk screws
on TOW launcher
pose no problems
Exposed
screws could
be a problem
689.04-05.indd
1-2
3/2/10
5:07:39 PM
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