PS Magazine - TB 43-PS-581

PS, The Preventative Maintenance Monthly

ISSUE 581

APRIL 2001
PS Magazine - TB 43-PS-581 - Page 12 of 32
M1-series tanks
T158
01-102-2711
G
ot a short in the turret power harness of your M109 howitzer?
Chances are the
commander’s seat is to blame.
When the seat is folded down, the
wiring harness can get pinched between
the seat mount and the turret wall.
If the
insulation gets cut, your howitzer can
end up with a short—and you end up
with no power to the turret.
So eyeball the harness to make sure
it’s out of the way and won’t get
pinched.
If it’s in harm’s way, let your
mechanic know so he can re-route the
harness to clear the seat mount.
M109A2-A5 SP Howitzers…
PS 581
APR 01
20
Combat Vehicles…
Once Is Quite Enough
N
o matter how good they look and no
matter how much money your unit
will save, self-locking track pad nuts
are good for one time and one time
only.
Those nuts won’t hold the second
time around.
Some have nylon inserts
that tear up when used a second time.
Others have metal threads that stretch
slightly once torque is applied.
Bottom line is, if you reuse ‘em,
they’ll come loose and you’ll wind up
with a whole bunch of thrown pads.
So if you remove a pad for any reason,
put on a new nut—every time.
Here are
the nuts to order:
VEHICLE
TRACK
SHOE
M109-series howitzers,
M992A2 ammo carrier
T136
00-868-8062
M109-series howitzers,
M992A2 ammo carrier
T154
01-341-4122
M113-series FOV
T130E1
00-982-6809
M2/M3-series Bradleys, MLRS
T157
01-108-3772
M2/M3-series Bradleys, MLRS
T157
I
00-241-6664
M60 AVLB
T142
01-102-2711
M578 recovery vehicle
T132
00-854-6481
NUT NSN
5310-
Re-route power harness
behind seat mount
Stop Seat Shorts
M
echanics, missing or worn-out travel lock friction linings will do a lot of dam-
age to the M109 howitzer’s cannon tube. Linings are easier and cheaper to replace
than cannon tubes.
The linings cushion the tube when it’s in travel lock, keeping metal from banging
and scraping on metal.
Prevent tube damage by
replacing worn or missing
linings. You’ll need two lin-
ings,
NSN 2530-01-060-
7229, for each travel lock.
Remove the old linings
and adhesive residue with a
putty knife and dry cleaning solvent. After the surface dries, apply new adhesive,
NSN 8040-00-926-9133, to the replacement linings and install them. Order the adhe-
sive on a DD form 1348-6 and put “NSN not on AMDF” in the REMARKS block.
Leave the travel lock open for one hour until the adhesive dries.
Linings damaged or
missing? Replace ‘em
581. 20-21 (C)
2/26/01
12:38 PM
Page 1
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