PS Magazine - TB 43-PS-711
PS, The Preventative Maintenance Monthly
ISSUE 711
FEBRUARY 2012
42
43
PS 711
PS 711
FEB 12
FEB 12
T
he M31A2 BIDS (pre-planned product improvement biological integrated
detection system) can give you a good deal if you make your best bid with PM.
Here’s the deal:
Wires
and
cables—
BIDS
has
lots of wires and cables. Often one
is left disconnected or comes loose,
especially if your BIDS has just
come back from services. Save lots of
troubleshooting time by systematically
checking that all wires and cables for
each component are connected and
tight before you try operating.
Dear Editor,
As a TACOM LAR at Ft Riley, I’ve encountered several M121 with M191 bipod
mortars that had corroded so badly that their elevation systems had seized.
The usual cause of this is Soldiers
leaving the M121 inside the mortar carrier
while they pressure wash the rear of the
carrier. Some of that water ends up inside
the M121 and corrosion follows. If Soldiers
remove the M121 before they wash the
M1064-series mortar carrier, there is
no problem.
A worn felt seal inside the mortar can
also lead to corrosion. Rainwater seeps
in past the seal. The semiannual services
state “remove and inspect preformed felt
for serviceability.” I suggest repairmen
replace the $1 seal every six months
regardless of its condition. Order the
seal with NSN 5330-01-325-9971.
Gerald Knipe
Ft Riley, KS
Keep it clean—
The cleaner the inside of the BIDS shelter, the better BIDS works.
Daily, especially in the desert, vacuum the Foor. Keep the door shut as much
as possible.
Best Bid Is BIDS PM
remove mortar
before
washing
I’ll
bid
this PM
card.
too rich
for
my
blood!
I fold,
too!
hey, joe!
you left my
door open.
I don’t
need
any
dirt
getting
in here.
Before
operations,
make
sure all
cables and
wires are
connected
securely
Wash rack ruins bipod felt seal (inside)
M121
Mortar…
Editor’s note:
Excellent suggestions,
Gerald.
Listen up, mortar men!
hey!
take me
outta here
before
you start spraying
around water!!
are ya
tryin’
to
give me a bad case
of
corRosion!?!
711 42-43.indd
1-2
12/22/11
11:24 AM
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