PS Magazine - TB 43-PS-674
PS, The Preventative Maintenance Monthly
ISSUE 674
JANUARY 2009
11
PS 674
JAN 09
After Operation PMCS
When parking your HMMWV on a grade or a slope, use wheel chocks
and
the
parking brake.
By the way, units will have to pay for any requisitioned items needed to get
vehicles back to the standard conFgurations.
Within these guideline, you can say no to the old, and yes
with caution
to
the new.
During Operation PMCS
1.
Limit vehicle speeds to 20 mph when towing a HMMWV.
2.
Limit vehicle operation on V-ditch type obstacles when towing a like HMMWV.
3.
Limit vehicle operation to grades no greater than 20 percent and side slopes no
greater than 30 percent when towing a like HMMWV.
4.
Increase stopping distance when towing.
1.
Inspect the tow bar ring hitch
assembly for wear. When the ring’s
thickness wears below 1.25 inches,
replace
the
ring
hitch
assembly
using
part
number
2509-700-001,
CAGE 1SC69. Use an outside caliper
micrometer, NSN 5210-00-243-2933.
2.
Use safety tow chains instead of
nylon straps.
Basic Guidelines
Use of Ibis Tek tow bar,
part number 2509-400-
001, CAGE code 1SC69,
is only for HMMWV to
HMMWV
applications.
This tow bar is black. The
older Ibis Tek tan tow bar
is
not
authorized.
Get two people to install the Ibis Tek tow bar. The tow bar weighs 60 pounds.
When stowing the tow bar in the front vertical position, use a positive
locking ratchet strap to secure the tow bar.
Don’t
use the nylon straps provided.
This should prevent the tow bar from coming in contact with the ground while
in motion.
Operators should wear gloves when removing the rear hitch pin on the rear
bumper tow bar holder. That ought to prevent hand injuries.
Before Operation PMCS
HMMWVs…
Use New Tow Bar
with Caution
Replace
when
thickness
wears
below
1.25”
we’ve told
you before
not
to use
unauthorized
tow bars.
that’s still true. but now
there’s another tow bar
option that has been tested
on up-armored hmmwvs,
and it’s
authorized
.
units can use the
new Ibis tek tow
bar, part number
2509-400-001,
with caution
.
commanders who approve
the use of this tow bar will
have to first develop a
composite risk management
document that meets the
fm 5-19 standard.
if your commander
accepts the hazard risk
given in tacom soum
08-015, use these tips
to stay safe while
using this new tow bar.
Use new black tow bar, PN 2509-400-001,
with commander’s approval
Don’t use old tan HMMWV Ibis Tek tow bar
hey!
you’re not
allowed to use the
Ibis tek tow bars!
dude! I
can
use
this one.
the commander
gave us her
approval.
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674.10-11.indd
1-2
12/1/08
4:35:32 PM
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