PS Magazine - TB 43-PS-636
PS, The Preventative Maintenance Monthly
ISSUE 636
NOVEMBER 2005
t
he more the personnel heater in your MLRS is used, the more dust and dirt will
build up inside.
Too much debris can lock up the exhaust fan. That burns out the heater’s 6.3-amp
fuse and shuts down the heater. Not knowing what’s wrong, most operators send the
heater in for repairs.
The fix is simple and easy:
1.
Remove the air duct hose, NSN
4720-00-535-7615, from the heater.
2.
Vacuum the accumulated dirt and
dust around the fan.
PS 636
NOV 05
3
MLRS Carrier…
PS 636
NOV 05
2
M1-Series Tanks…
I
t’s been said that what you don’t know can hurt you. At the very least it can make
you pretty darned confused.
There are two new rounds being
fielded for the M1-series tank: the
M829A3 sabot and the M1028 canister
round. The confusion comes when up-
dating DA Form 2408-4,
Gun Record
Card,
after firing the new rounds.
Tankers have long been used to an
equivalent full charge (EFC) of one per
round fired. That’s been the standard
no matter what round was fired. The
new rounds are different. For each of
these rounds fired, the EFC will be two.
When you enter the type of round
fired on the automated DA Form 2408-
4, it’ll automatically enter a “2” in the
EFC column. So don’t be confused
when you see it.
For more info on how to use the
automated gun card system, see Pages
8-9 of PS 620 (Jul 04). Or check it out
online at:
psissuesA/620/620-08-09.pdf
New rounds have EFC of 2
M1028
M829A3
lessee now… we fired
one m1028 canister round,
so that’s an efc of…
one.
waitaminit!!
those new rounds
have an efc of
two!
Replace burned-out fuse
Clean dust and dirt from fan
a little cleaning
and a new fuse will
make my heater as
good as new!
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.
Of course, you can usually prevent the problem altogether by cleaning the fan at
the end of winter and again when the temperatures start to fall. Making sure the air
inlet screen, NSN 2510-01-264-0153, is properly installed in the cab will help keep
out debris, too.
W-what
a t-t-
terrible
tuh-time
for your
heh-heater
to
conk
out!
636.02-03(C).qxd
9/30/05
10:23 AM
Page 1
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