PS Magazine - TB 43-PS-579
PS, The Preventative Maintenance Monthly
ISSUE 579
FEBRUARY 2001
echanics, easy does it on the
M113A3’s bilge pump sight glass.
It’s made of plastic so it cracks easi-
ly as you tighten down the clamp nuts.
A cracked sight glass delivers a lap
full of water to the driver the next time
the bilge pump is turned on. That’s sure
to get you scratched off next year’s
Christmas card list!
A big leak from the sight glass is
considered a Class III leak, too. That
means the carrier is NMC until the
sight glass, NSN 9330-00-782-1832, is
replaced.
M113A3 FOV . . .
D
rivers, the mounting hardware for
the M113A3 FOV’s engine compart-
ment door support arm needs to be kept
nice and tight.
If the hardware loosens, the arm rat-
tles around from vibration. It doesn’t
take much movement to free the arm’s
tip from its storage bracket.
When that happens—WHAM!—right
into the AOAP sampling valve. The
valve is damaged as the tip of the sup-
port arm bounces against it over and
over. You won’t even realize the damage
is done until the next time you open the
engine access cover.
During your before-operation PMCS,
Loose hardware…
…allows tip to slip from bracket…
PS 579
FEB 01
16
PS 579
FEB 01
17
take a close look at the support arm
hardware. If it’s loose, take a few sec-
onds to tighten it up.
If the support arm comes loose a lot,
try a few drops of sealing compound,
NSN 8030-00-081-2339, on the hard-
ware threads. That should keep the sup-
port arm in place.
Cracked sight
glass leaks
enough to
make vehicle
NMC
…and smack against sampling valve.
579. 16- 17 !! (C)
1/11/01
4:04 PM
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