PS Magazine - TB 43-PS-709

PS, The Preventative Maintenance Monthly

ISSUE 709

DECEMBER 2011
PS Magazine - TB 43-PS-709 - Page 4 of 33
M1A2
1.±
Install the MILES tank firing insulator card (or the replacement flashlight filter) between
the firing contacts on the right side of the main gun breech ring assembly. If you
forget, the firing circuits inside the fire control electronics unit (FCEU) or IFCEU will be
destroyed. Remember to remove the card once the simulation exercise is over.
2.±
Locate the modified MILES trigger cable. It’s the one that has a knob stop that
extends from the P2 connector end of the cable. The knob stop keeps you from
accidentally plugging the P2 connector into the TJ1 receptacle on the FCEU/IFCEU.
In fact, make sure you never connect the MILES
trigger cable to the TJ1 receptacle on
any
LRU,
including the turret mission processor unit (TMPU),
hull mission processing unit (HMPU), improved hull
mission processing unit (IHMPU), commander’s
electronics unit (CEU), ICEU or commander’s
independent
thermal
viewer-electronics
unit
(CITV-EU). If you do, you’ll soon be replacing a
damaged LRU.
3.±
Connect the plug labeled P1 CONTROL CONSOLE J2
to the J2 connector on the MILES control console.
4.±
Route the other end of the cable to the FCEU/IFCEU. The cable should go around the
outside of the ammo/ration box. Make sure it’s clear of the ready ammo box, too.
5.±
Remove the FCEU/IFCEU access cover.
6.±
Connect the P2 connector to the TJ2
receptacle on the FCEU/IFCEU. You
may need to disconnect some other
cables to make room. Just be sure
you reconnect all of these cables
afterward.
7.±
Reinstall the FECU/IFCEU cover and
continue MILES installation from this
point according to the TM.
When±You’re±Done
When you’re finished using MILES,
don’t forget to reattach the connector
cover on the TNB/RTNB. Leaving the
connector uncovered lets in dirt and
moisture that causes corrosion. The next
time you hook up your MILES gear, it
won’t work.
Replace a missing cover with NSN
5935-00-196-6835 for the TNB and NSN
5935-01-092-3042 for the RTNB. These
NSNs also bring the cover’s metal lanyard.
Questions? Contact TACOM-Rock Island’s Michael Fiame, DSN 793-6745,
(309) 782-6745, or by email:
michael.a.fiame.civ@mail.mil
5
4
PS 709
PS 709
DEC 11
DEC 11
T
he new revision to TM 9-2350-264-24P-2 (May 11) was published with some
missing artwork and parts list info for the ball bearing race ring assembly on your
M1A1 tank.
Until the TM is revised, make the following changes:
1.
Make a copy of the NBC seal listed as Item 7 of Fig 29 in TM 9-2350-264-24P-2
(Apr 03 w/Ch 6). This is the old, superseded TM.
2.
Tape or paste the NBC seal to one side
of the artwork in Fig 28 (WP 0029-1)
of the May 11 TM.
3.
On the parts list page of the new TM’s
Fig 28 (WP 0029-3), change the ±rst
letter of the SMR code for Item 7 from
a
P
to an
X
. Then strike a line through
4.
At the bottom of the parts list page for
Fig 28 (WP 0029-3), add the following
info for columns 2-7:
The race and seal assembly, NSN 1015-01-580-4674, is a new item of supply
which includes the seal assembly, NSN 5330-01-230-1689, and ball bearing race
assembly, NSN 1015-01-198-2039. Although the ball bearing race assembly has an
NSN, it can no longer be ordered. Its SMR code has changed to XAFDD (see Step
3), which means you must order the next higher assembly.
(2)
PAFZZ
PAFDD
(3)
(4)
19200
19200
(5)
12344522
13023852
(6)
Seal Assembly
Race and Seal Assy
(7)
1
1
Add this seal to artwork
in Fig 28 of new TM
M1A1
Tank…
Ball Bearing Race Ring
Changes
Hey,
good
news!
I just
got a copy of
the new parts
TM for your
turret!
Yeah, but there
are a
few changes
you
need to know about
first!
M1A2
trigger
cable has
knob stop
on P2
connector
Remember to put cap back on when finished
Connect
P2 connector
to TJ2
receptacle
709 04-05.indd
1-2
10/27/11
5:11 PM
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