PS Magazine - TB 43-PS-720
PS, The Preventative Maintenance Monthly
ISSUE 720
NOVEMBER 2012
4
PS 720
NOV 12
5
PS 720
NOV 12
Wire Race Ring
1.
Give the grease
fitting on the
ball insert plug
two shots of WTR
aircraft grease.
2.
Rotate the manual
traverse handle two
full turns to move
the turret. Give the
grease fitting two
more shots of WTR.
3.
Repeat Steps 1 and
2 until the turret has
made a complete
360° revolution
around the hull.
1.
Remove the race ring’s cover guard, NSN 5340-
01-505-2887. Underneath, you’ll see three lube
fittings.
2.
Use a grease gun to slowly pump two shots of
WTR into the top grease fitting while manually
traversing the turret two full revolutions.
3.
Repeat Step 2, but use the middle grease
fitting.
4.
For the bottom grease fitting, slowly pump in
one shot of WTR while manually traversing the
turret one revolution.
5.
Reinstall the cover guard.
C
rewmen, the central processing unit (CPU) for your M1A2 SEP tank’s Force XXI
Battle Command Brigade-and-Below (FBCB2) is located on the turret ±oor. It gets
bumped, knocked, and bounced almost constantly during operation.
To protect it from that abuse, the CPU sits on a special mount equipped with four
rubber cushioning pads. The CPU is attached to the rubber pads with screws that go
through a small metal insert in the center of each pad.
Problem is, those inserts will sometimes pull
loose from the pads. That lets the CPU bounce up
and down all over the place! So it’s only a matter
of time before the CPU itself is damaged.
You can check for damaged rubber pads by
reaching down and trying to move the CPU back
and forth. If it stays ²rmly in place, you’re in
good shape. But if there’s movement, you need to
let your mechanic know right away.
Unfortunately, there is no separate NSN for the rubber pads. He’ll have to replace
the entire mount, NSN 5340-01-547-4975.
Shake, Ratle and Ro!
M1A2 SEP
Tanks…
STop The
Shake, Ratle and Ro!
If insert
pulls loose,
CPU loses its
protection
Behind protective plate, CPU sits
on four rubber cushioning pads
what am I
supposed to
do with
this?
my fbcb2
cpu needs
protection!
replace it!
one more thing!
make sure the
ball insert plug
that comes with
your tank
stays
with your tank.
the race ring
assembly and
ball insert plug
are a
matched
set
and have to
stay together.
there is no
inspection criteria
for tanks equipped
with the wire race
ring, nsn 1015-01-
433-
7
999.
but you’ll
still
need
to lube it
monthly.
here’s
how…
if you find no
problems, give
the race ring
its monthly
lubing like
this…
Pump in two shots of WTR,
then rotate manual traverse
handle two full turns
Look for three grease Fttings
under cover guard for
wire race ring
720 04-05.indd
1-2
9/24/12
3:50 PM
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