PS Magazine - TB 43-PS-727

PS, The Preventative Maintenance Monthly

ISSUE 727

JUNE 2013
PS Magazine - TB 43-PS-727 - Page 25 of 33
46
PS 727
JUN 13
±
Let the warning lights warn you.
±If±the±dashboard±warning±lights±kick±
on±or±you±go±above±a±certain±speed,±the±Fox’s±anti-gas±system±activates±and±
makes±it±difficult±to±press±down±on±the±gas±pedal.±Soldiers±disable±the±system±
by±turning±off±its±circuit±breaker.±But±then±you±won’t±be±alerted±to±major±
problems±like±low±oil±pressure±or±the±transmission±overheating.±A±little±extra±
speed±is±not±worth±that±danger.±Leave±the±circuit±breaker±alone.
±
Clean means cool.
±
Fine±sand±clogs±the±grill±
door±vents±on±top±of±the±
Fox.±The±lack±of±air±to±the±
A/C± condenser± causes±
the± A/C± to± overheat.±
At± least± weekly± in± the±
desert,± Fox± crews± need±
to± blow± out± the± vents±
from± the± inside± out± so±
that±the±A/C±gets±plenty±
of±air.±This±helps±the±A/C±
work±
more±
efficiently,±
too,± which± means± you±
stay±cooler.±
±
Keep
overpres-
sure pressured.
± The±
usual± causes± of± poor±
overpressure±are±plugged±
valves± and± poor± seals.±
Dirt±and±trash±like±leaves±
can±keep±the±two±valves±
from± sealing± tight.± Air±
escapes± and± you± can’t±
build± up± air± pressure.±
Open±both±valves±weekly±
and±clean±out±any±debris.±
Make±sure±their±seals±are±
in±good±shape,±too.±
± Be±
careful±
carrying±
stuff± through± the± NBC±
suite± door.± If± you± drag±
things±across±the±door’s±
seal,± the± seal± is± pulled±
loose.± Once± again,± the±
Fox± can’t± build± up± air±
pressure.
± When± you± do± your±
weekly±PMCS,±check±the±
door±and±hatch±seals±for±
loose± spots± or± tears.±
That± way± you± can± get±
them± fixed± before± your±
next±mission.
± One± other± item± that±
can± cause± overpressure±
problems±is±the±drain±hose±
that± runs± from± the± M21±
container±box±to±the±floor±
plate.± The± hose± is± often±
accidentally±
kicked±
or±
bumped±when±Soldiers±are±
working± in± the± confined±
space±of±the±NBC±suite.±
If±the±hose±is±punctured,±
the± overpressure± system±
won’t± work.± Watch± your±
feet±around±the±hose±and±
remember± to± check± the±
hose±if±the±Fox±can’t±build±
pressure.±
±
Buckle
up
for
sampling.
± When± you’re±
using± the± double± wheel±
sampler,± make± sure± you±
have± the± sampler± line±
securely± buckled± in± the±
OPERATIONAL± slot.± If±
the±sampler±isn’t±secure,±it±
could±come±off±completely±
during±travel.±And±it±won’t±
work±in±AUTOMATIC±mode±
when± it’s± not± securely±
buckled±in.±
±
Carefully follow the procedure for starting and stopping the
MM1 spectrometer.
±If±you±skip±steps,±the±MM1±will±fault±out.±That±can±
damage±circuit±cards.±
± ±
±
±
±
±
±
Randy±Pearce
± ±
±
±
±
±
±
Ft±Stewart,±GA
Editor’s note:
Thanks, Randy.
Your suggestions
will keep Foxes
on the trail
instead of in
the shop.
Blow out vents at least weekly in desert
Don’t drag things
across NBC suite door
That pulls seal loose
Check door and hatch seals weekly for cuts and loose spots
Holes in M21 drain hose
hurt overpressure
Buckle sampler line in
OPERATIONAL slot
now that we got
through those tips, let’s
rejoin the convoy!
727 46-47.indd
1-2
4/22/13
5:58 PM
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