PS Magazine - TB 43-PS-621
PS, The Preventative Maintenance Monthly
ISSUE 621
AUGUST 2004
Dear Chief E.S.,
Well, you can't do that. There is no MWO for converting M12A1s to diesel. But
the Army through the Depot Rebuild Program is gradually converting all its
M12A1s to diesel. The converted M12A1s will run on both diesel and JP8. Many
active Army units have already received the diesel M12A1s.
The diesel M12A1s will have their own TMs. TM 3-4230-237-10 has been fin-
ished and is ready for printing. TM 3-4230-237-23&P should be finished late this
year. In the meantime, TB 3-4230-209-23 provides much of the new info that will be
in the -23&P. The TB is on the Electronic Technical Manual website at
If you want to find out when your unit is scheduled to receive a diesel M12A1,
contact CPT Eric Towns at DSN 222-6500, (703) 692-6500 or
email:
eric.towns@hqda.army.mil
Fox NBC Vehicle…
Being Drained Is
Good
W
hen you are drained after a long day's work, that's not so great. But for your Fox,
being drained is great. If it's not drained on a regular basis, it develops problems doing
its job.
The most critical drains are the three
under the vehicle. If they're not opened at
least weekly, water—sometimes lots of
water—builds up in the hull, which can
cause engine problems and corrosion.
Anytime there is a heavy rain,
drain!
Your Fox will need it. If possible, drain
into a container. The water may be mixed
with oil and antifreeze and you don't
want that soaking into the ground.
Mud sometimes plugs the drain holes, so it's a good idea to clean them out with
water before and after every mission. The procedure is on Page M-020 in TM 3-6665-
339-10. If the drain holes get too plugged, you have to pull the floor boards and M21
in order to get at the drain holes. That's a job you want to avoid.
Clear the driver's side
periscope drain hole and
the overpressure vent hole
on the commander's side.
For some reason, wasps
like to build nests in those
holes and they plug up. A
plugged drain hole for the
periscope means the driver
will get wet. A plugged
vent hole can affect over-
pressure. The easiest way
to clear both holes is to run a wire down them. Do this monthly.
Another drain hole to keep clear is the one by the fuel spout. If it's plugged, water
builds up and can get in the fuel when you take off the fuel cap. The easiest way to
clear the spout hole is to blow out any dirt with an air hose.
Dear Half-Mast,
We want to
convert our M12A1
decons to diesel.
How do we do
that?
CW4 E.S.
am I
ever
going to be
upgraded
to diesel?
I really think I
could do a
better
job if I was diesel!
Open drain valves when Fox is parked
boy!
what a
day! I
feel
drained!
I wish
I
could say
that…
…’cause I
need
to be
drained!
Keep periscope
drain hole…
…and commander’s side over-
pressure vent hole open by
running a wire down them
PS 621
AUG 04
46
be
patient.
the army
is work-
ing on it.
Diesel
Is Coming
M12A1 Decon…
621. 46-47 (C)
7/6/04
3:01 PM
Page 1
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