PS Magazine - TB 43-PS-586

PS, The Preventative Maintenance Monthly

ISSUE 586

SEPTEMBER 2001
PS Magazine - TB 43-PS-586 - Page 9 of 31
W
hen you drivers exit your
M88A1 recovery vehicle, it’s easy
to snag the back of your coveralls
on the engine fire suppression sys-
tem safety pin. If the pin is pulled
out—even slightly—it activates a
sensor that keeps the engine from
starting the next time.
So if you feel a little tug on the back of your coveralls at the end of the next mis-
sion, reach back and make sure the safety pin is pushed in all the way.
If the engine won’t start next time, you may not have noticed the snag. So always
make the safety pin your first check.
M113-Series Personnel Carriers…
W
eather fades the Red Cross markings
on your M113-series ambulances.
Driving through brush scrapes them up.
Time to paint? Maybe not.
Instead of painting, you can order a
set of Red Cross decals for your vehi-
cles. NSN 7690-01-103-6312 gets four
Red Cross decals large enough for your
medical carrier. Three are 36 inches
square and one is 32 inches square.
Each vehicle needs five decals—one
on each side, the front, top and rear.
M113-Series FOV…
Replace Nuts Every Time
J
ust because money is tight is no reason to cut corners on repairs for your M113-
series vehicle.
Take the self-locking nuts, NSN 5310-00-982-6809, used to mount the vehicle
roadwheels and idler wheels, for instance. Some mechanics try to save money by
reusing the nuts when installing a new wheel.
That’s a bad idea. Those nuts have
nylon inserts that mold themselves to the
bolt threads during installation.
Once the nuts are removed, the inserts
are ruined and the nuts will no longer
lock. At best, you end up with a wobbly
wheel. At worst, the wheel falls off com-
pletely during operation.
If you want to save a few pennies,
reuse the flat washers, NSN 5310-00-
149- 9126, that go under the roadwheel
and idler wheel nuts. But
never
use self-
locking nuts more than once.
well… you
could
Try
checking my
engine fire
suppression
safety pin!
I don’t
get it! why
won’t your
engine
start?
Something
tells me
they
didn’t
use new
nuts on my
roadwheels!
PS 586
SEP 01
18
Self-locking nuts can
be used once only
Check for
loose pin
[phew!]
how can I
get some?
These
decals
make
life
easier!
M88A1 Recovery Vehicle…
586. 18-19 (C)
7/28/01
10:06 AM
Page 1
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