PS Magazine - TB 43-PS-743
PS, The Preventative Maintenance Monthly
ISSUE 743
OCTOBER 2014
3
PS 743
OCT 14
2
PS 743
OCT 14
A
working personnel heater on a cold winter’s morning is a thing of beauty. But when
the heater’s on the fritz, the temps inside your vehicle can get real ugly in a hurry.
You can keep the big freeze at bay by knowing what to do if your heater stops working.
The main culprits behind a non-heating heater are a jammed exhaust fan or a burned-
out fuse.
Over time, dust and dirt build up inside the heater. When enough debris builds up,
it locks up the exhaust fan. If the fan stops turning, the 6.3-amp fuse burns out and the
heater shuts down.
Before removing the heater and sending it in for repair, try the following:
And remember, you can usually prevent the problem altogether by cleaning the fan
when temperatures start to fall and again at the end of winter. Making sure the air inlet
screen, NSN 2510-01-264-0153, is properly installed in the cab will help keep out
debris, too.
1.
Remove the air duct hose, NSN 4720-00-
535-7615, from the heater.
2.
Vacuum out the accumulated dirt and
dust around the fan.
3.
Turn the fan back and forth to loosen
dirt at the base of the fan and vacuum
again.
4.
Replace the 6.3-amp fuse, NSN 5920-12-
301-5271, if necessary.
MLRS
Carrier…
Keep Winter’s Bite at Bay!
Clean dust and dirt from fan
Replace burned-out fuse
boy I
think it’s
colder
inside
my
vehicle
than it is
out here!
don’t
blame
Me!
if you’ve got
the know-
how, it’s
pretty
easy
to keep my
personnel
heater
working.
T
his
section covers
MLRS heaters,
Stryker mortar cracks,
lubing M113s and
using funnels to
add oil.
CoMBAT VEHICLES
mission capable
equipment depends
on
you
doing
maintenance
right!
743 02-03.indd
1-2
9/3/14
10:34 AM
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