PS Magazine - TB 43-PS-673
PS, The Preventative Maintenance Monthly
ISSUE 673
DECEMBER 2008
10
PS 673
DEC 08
11
PS 673
DEC 08
Dear Half-Mast,
We need your help. My unit has M1025 HMMWVs with
sagging headliners. How do we seal them back in place? And what
can we use to remove the sticky, old adhesive from the roof?
SSG D.L.
Dear Editor,
We’ve received a lot of phone calls and email messages concerning
safety chain connection issues with the FMTV tow vehicle and lunette
trailers and dolly sets. The FMTV manufacturer increased the size of the
FMTV’s tow shackles. When they did this, the FMTV tow shackles fit the
size and weight of the FMTV trailer. But, unfortunately, they don’t fit the
smaller hook size of the lunette trailers that must be towed.
We have developed a solution for the field. Here’s what users should
keep in mind when figuring out the correct length of lunette trailer
safety chains:
FMTV trucks use tow shackles that are thicker and larger than the
tow shackles on older 2
1
/
2- and 5-ton trucks. The safety chain hooks
currently used on 1
1
/
2-ton and larger lunette trailers and dolly sets are
not large enough to attach to the FMTV tow shackles. Therefore, you
will need to use a larger safety chain hook that will attach to the FMTV
tow shackles.
A second problem is that current production FMTV trucks now have
the pintle extended eight inches to the rear from where the earlier FMTV
pintles were mounted in relationship to the tow shackles. The safety
chains will be too short, so you’ll need to make them longer.
Dear Sergeant D.L.,
It’s a sticky situation when your HMMWV’s
insulation liner loses its sticking power. The
self-stick backing on the headliner turns loose
and the liner droops.
Fix this by ±rst eyeballing the inside roof of
your hardshell HMMWV to see if the liner has
any loose spots. Then glue loose spots back in
place using primer adhesive, NSN 8040-00-
826-3535. You may have to peel back the liner
to give yourself room to apply the adhesive.
Hold the liner against the roof for about three
minutes while the adhesive dries.
When
you’ve
gotta
replace
the entire liner, get rid of the
old adhesive using dry cleaning
solvent, NSN 6850-00-110-4498.
Then apply the primer adhesive
to the roof to make sure the liner
stays put.
By the way, this solution will
work for sagging liners in any
basic HMMWV with a hard roof.
FMTVs and Lunette Trailers…
HMMWVs…
Rightsizing Trailer
Safety Chains
sticky situation
yikes! that
droopy liner’s a
real
hazard!
man!
this hook
is
too
small…
…it
doesn’t
fit!
673.10-11.indd
1-2
11/4/08
3:02:38 PM
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