PS Magazine - TB 43-PS-561
PS, The Preventative Maintenance Monthly
ISSUE 561
AUGUST 1999
PS 561
11
PS 561
10
AUG 99
5,000-Gal Fuel Tankers . . .
Air Chamber Line Check
N
ext time you mechanics are on your back under the rear end of your M967/
M969/M970-series fuel tanker, eyeball the air lines to the brake chambers.
Sometimes the chambers get rotated so that the lines chafe against the
frame or against the axle. Next thing you know the lines are leaking and that
puts a sudden stop to everything when
the brakes lock up.
Follow the air lines from the reser-
voir to the chambers with your hands,
feeling for rough spots. If you find any,
replace the line.
To prevent the chafing, rotate the
chamber housing left or right to move
the lines away from the frame or axle.
ot only do you do windows, you
do them without commercial cleaners
that come in aerosol cans. The propel-
lants can etch the glass and damage
rubber seals.
Regular glass windows get the soap
and water treatment, then a rinse and
dry. That’s all there is to the job.
M911 C-HET . . .
Check hoses and rotate chamber if needed
In all instances, stay away from
products that contain ammonia.
Bal-
listic glass is especially vulnerable
to ammonia, which will eventually
cause the two-piece glass “sandwich”
to separate.
scratches. But if the windows are still
so damaged that you can’t see clearly
through them, let your mechanic know
so they can be replaced.
For ballistic glass—used on armored
HMMWVs—apply plastic polish, NSN
7930-00-935-3794, once you’ve got the
windows clean and dry with soap and
water and hand cleaner. The polish re-
moves light scratches.
Plastic windows require a little more
effort. Those that are yellow, discol-
ored or scratched may not be helped
by washing, but put the soap and water
to them as above, anyway. Then apply
hand cleaner, NSN 8520-00-782-3509.
Once the cleaner is dry, wipe it off
with another clean cloth.
Tactical Vehicles . . .
who,
me?
In some cases, this cleaner will
remove discoloration and minor
hen you order M911 com-
mercial heavy equipment trans-
porter tires using the NSN in the
parts TM, you’re going to get ra-
dials, NSN 2610-01-364-5044.
Bias tires are no longer available.
No problem, except:
You can’t use bias and radial
tires on the same axle of your
M911. It’s either all bias or all
radial on a single axle.
You can’t use bias inner tubes
in radial tires. They may not be
strong enough for use in radials,
and could fail. If you need a radial
tube, order NSN 2610-01-364-
4097. You
can
use a radial tube in
a bias tire.
i'm
biased
against
bias
!
Soap and water and
hand cleaner for plastic
Soap and water, hand cleaner
and plastic polish for ballistic glass
Soap and water for glass
PS 561
11
PS 561
10
AUG 99
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