PS Magazine - TB 43-PS-724

PS, The Preventative Maintenance Monthly

ISSUE 724

MARCH 2013
PS Magazine - TB 43-PS-724 - Page 5 of 33
7
PS 724
MAR 13
C
rewman, it’s a known fact that water collects in the hull of your armored security vehicle
(ASV).
That’s because water drips off wet boots and uniforms, trickles in from the top of the
vehicle, comes in from the wash rack, or seeps in through loose drain plugs during fording.
Water’s Three Problems
Solid:
If you’re in a cold-weather region like Alaska or areas of Afghanistan, the water
in the hull and under the floor plates will freeze. And because water expands as it freezes,
lines and fittings are ruptured, causing all kinds of damage.
Liquid:
Water under the floor plates will rust the vehicle’s air brake valves and just about
anything else made of metal.
Gas:
As temperatures go up, the water evaporates and condenses on radios and other
electronic gear. Enough moisture can short out electronic equipment.
Here’s the Fix
Open the hull’s drain plugs on the bottom of your ASV. There are six of ‘em, so make
sure you open ‘em all or you’ll leave water behind.
You’ll find a plug in all four wheel wells (behind the wheel assembly) of the vehicle. The
last two plugs are directly under the vehicle, near the back half of the middle area. You’ll
see the locator views of the plugs shown in WP 0048-2 of TM 9-2320-307-10 (Sep 10).
By the way, make sure any water drained from the hull goes into a drip pan and is
disposed of according to your unit’s SOP. That’s because any fluid leaks, like coolant, oil and
power steering fluid, can end up in the vehicle’s hull, too. So never dump contaminated
water down a drain or let it run onto the ground.
Also, you don’t want water to get back in through the drain plug openings. Make sure
you reinstall ‘em before operation—and do it right. Plugs that are too loose will vibrate
free. And plugs that are too tight are hard to open and more likely to be left closed when
draining is needed.
So apply a little anti-seize compound, NSN 8030-01-087-8254, to the threads before
installing the plugs. That lets you tighten the plugs enough to keep them from vibrating
loose, but makes them easier to open next time.
Just make sure you put the compound on each plug’s threads and the threaded portion
of the hull. That way, all the threads are coated and the plugs won’t stick.
Dear Half-Mast,
I’m trying to find the
NSN for the windshield
washer nozzle bracket for an
M1152 HMMWV. The nozzle
is shown as Item 23 of Fig
228 in TM 9-2320-387-
24P. But the bracket that
attaches the nozzle to the
windshield deflector isn’t
there. Can you point me in
the right direction?
SGT C.G.
Dear Sergeant C.G.,
Yes, we can. On M1152s with no armor,
use NSN 5340-01-596-4594 to get the new-
style nozzle bracket. On M1152A1s with B kit
armor, NSN 5340-01-596-4595 brings the new-
style nozzle bracket. The correct bracket for
M1152A1s with underbody armor and no B kit
armor comes with NSN 5340-01-596-4592.
And if you need the new-style spray nozzle
for any of these vehicles, get it
Seeking
Windshield
Washer
Nozzle
Bracket
M1117 ASV…
Don’t Forget Drain Plugs
M1152/A1 HMMWV…
Seeking
Windshield
Washer
Nozzle
Bracket
Remove all drain plugs to let water out
There are six hull drain plugs
Bottom view
man, it’s
r-really
c-c-
cold
out
h-here
tuh-today!
you
s-said
it!
the
w-water
in
m-m-my
h-hull
is
frozen
s-solid!
PSST!
Hey, Buddy!
y’wanna buy
a watch?
I’m
goOd.
ask him if he has a
windshield washer
nozzle bracket!
724 06-07.indd
1-2
1/29/13
2:52 PM
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