PS Magazine - TB 43-PS-626
PS, The Preventative Maintenance Monthly
ISSUE 626
JANUARY 2005
PS 626
JAN 05
5
M984E1 HEMTT…
Dear Editor,
We’ve come across a serious number of leaking wheel seals, NSN
5330-01-048-6240, on our fleet of M984E1 HEMTT wreckers.
After investigating, we discovered that the inner wear ring was being
mistakenly installed on the wreckers’ wheels. The note on Page 12-21 of
TM 9-2320-279-20-2 (Apr 87 w/C4) specifically says the M984E1
does not
take wear rings.
When installed, the ring damages the seal. The result is a Class III
leak and damage to the brake shoes and other internal parts, not to
mention a big mess on the ground.
Could you remind mechanics to leave the wear ring off when installing
a new wheel seal on the M984E1?
CW2 Carlos A. Acevedo
448th Eng Bn
Camp Arifjan, Kuwait
PS 626
JAN 05
4
HEMTT…
D
rivers, the only thing worse than a flat tire on a loaded HEMTT is two flat tires,
especially if one of ‘em is the spare.
But a flat spare is exactly what you
get if you load and unload the spare tire
with the valve stem at the 12 o’clock
position. The winch cable hooks the
valve stem and then tears or cuts it
when the tire is lifted.
So play it safe. For split rim wheels,
make sure the valve stem is at the bot-
tom of the wheel before you lift. If your
spare is on a bolt-together wheel, posi-
tion the valve stem between the 7 and 8
o’clock positions.
I haven’t got a
tire to spare if
my spare tire
isn’t
loaded
and
unloaded
the
right way!
(Editor’s note:
You’ve done a pretty persuasive
job of that already, Chief. Thanks for the info!)
see!
I
told
you
my wheels
didn’t
need a
wear ring!
whups!
Make sure valve stem is at bottom
of tire on split rim wheels
626.04-05(C!)
11/26/04
12:03 PM
Page 1
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