PS Magazine - TB 43-PS-695
PS, The Preventative Maintenance Monthly
ISSUE 695
OCTOBER 2010
6
OCT 10
7
PS 695
OCT 10
Step 3 on the decal says to read the
top of the
coax ammo feed chute
against the scale on the
gauge. Problem is, warping and bending of the
ammo feed chute can result in a bad measurement.
So the procedure has been amended to read the
top
of the breech-ring
against the gauge instead.
The correct instructions are on Page 2-32
of TM 9-2350-264-20-2-1 (Apr 03) and WP
0258-22 of TM 9-2350-388-23-2-2 (Jan 09). But
most mechanics just follow the decal and get a
wrong reading.
A new decal, NSN 7690-01-575-0788, is now
available with the correct instructions. So strip
off the old decal and apply the new, stick-on label
in its place.
When tightening the track, the
maximum extension for the piston
is 3
3
/
4
inches. If you try to tighten
any more than that, excess grease
is bled off through a small hole
in the piston. You’re just wasting
grease because the track won’t
get any tighter.
If you see grease coming out
of the bleed hole and the track is
still too loose, bleed off the track
adjuster to loosen the track and
remove a shoe. Then try again.
FM 3-20.21 Note
The main gun recoil piston sleeve position check starting on Page A-72 of FM
3-20.21 (Sep 09),
Heavy Brigade Combat Team (HBCT) Gunnery,
still contains the
incorrect information on how to perform the GO/NO GO check. Until the FM is
updated, do a pen and ink change. Change all
coax ammo feed chute
references in
Step 4 to
breech block.
M
echanics, the semiannual gun mount assembly GO/NO GO check is crucial. If
you don’t do it, or do it wrong, main gun accuracy degrades until it becomes difFcult
to hit a target.
It seems to be a pretty simple check. All you have to do is use the fabricated piston
seating gauge and follow the directions on the breech decal.
Get New Decal for
Straight Scoop
M2/M3-Series
Bradley…
Don’t
Be So
Pushy!
…and apply
new label,
NSN 7690-
01-575-0788
Strip off
old label…
but
wait!
turns out
there’s a
problem
with those
directions!
hey!
those new
breech
decals
came in!
great!
I
can feel my
aim improving
already!
the track adjuster
piston on your bradley
can only be pushed
so
far,
crewmen.
Piston extends no more than 3
3
/
4
inches
M1-Series Tanks…
695.06-07.indd
1-2
9/8/10
5:13 PM
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