PS Magazine - TB 43-PS-627
PS, The Preventative Maintenance Monthly
ISSUE 627
FEBRUARY 2005
PS 627
FEB 05
11
HEMTT…
To Winch
or
Not to Winch
Dear Half-Mast,
We’ve heard through
the rumor mill that the
self-recovery winch on our
HEMTT shouldn’t be used
because it’s not strong
enough.
I’ve looked but haven’t
been able to find any
safety messages or other
write-ups to support this
rumor. Can you set the
story straight?
SSG M.J.S.
Dear Sergeant M.J.S.,
Sure can. This is a very persistent rumor that
has been around for quite a few years. It proba-
bly started because the self-recovery winch is
rated at only 20,000 pounds and HEMTTs weigh
much more than that.
The rumor would be true if you were lifting the
HEMTT. But you’re not. You’re just pulling a
wheeled vehicle. For that purpose, the winch
works just fine.
There are, however, a few things to keep in
mind from the HEMTT TM when using the self-
recovery winch:
•
The caution on Page 2-402 in TM 9-2320-
279-10-1 says the winch is not designed to
pull free a mired vehicle by itself. Vehicle
drive system power must always be used
along with the winch or you risk damaging it.
•
The caution on Page 2-400 says to never
exceed the winch’s pull capacity. That’s the
force needed to move the wheeled vehicle
horizontally while it is in gear.
•
A second caution on page 2-402 tells you
to stop using the winch if the vehicle does
not move.
You can find more informa-
tion on winching operations
in FM 9-43-2,
Recovery and
Battlefield Damage
Assessment and Repair.
HEMTT Tie Rod Assembly
Use NSN 2530-01-469-6912 to get the tie rod assembly for the HEMTT’s front axle. This NSN
replaces the one shown as Item 17, Fig 219 of TM 9-2320-279-24P-1.
HEMTT Retaining Nut
Use NSN 5310-01-105-7227 when ordering the retaining nut for the HEMTT’s parking brake
valve.
You’ll see three different NSNs for this part number on FED LOG.
But only this NSN gets
the right nut. The nut is shown as Item 4, Fig 199 of TM 9-2320-279-24P-1 and P-2.
I guess
we’ll find
out!
it’s
not
like you’re
trying to
lift
me!
are you
sure
it’s OK
to use the winch? I’ve
heard that it’s
not
strong
enough for
self-recovery.
c’mon,
guys!
my
winch can
handle it!
627.10-11(C)
12/24/04
2:34 PM
Page 1
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