PS Magazine - TB 43-PS-709

PS, The Preventative Maintenance Monthly

ISSUE 709

DECEMBER 2011
PS Magazine - TB 43-PS-709 - Page 9 of 33
14
PS 709
DEC 11
L
isten up, FMTV users! IETM versions dated earlier than Sep 2010, new equipment
training and TACOM SOUM 11-005 incorrectly tell maintainers to pump the brake pedal
to bleed air from the brake hydraulic system. That mistake has resulted in damaged brake
converters due to overstroke on LTAS FMTV trucks with a serial number before 707,449.
Overstroke occurs when the brake pedal is pumped when there is air or a leak in the
hydraulic brake system. The resulting damage to the brake converter causes poor brake
performance or sharp pulling of the FMTV left or right during heavy braking.
Units must inspect both brake converters on LTAS trucks with serial numbers lower than
707,449. See TACOM SOUM 11-013 for inspection and repair details. The instructions are
pretty long, but there are detailed pictures to help you out. You can get to the guidance
you need online:
MRAP Heat Detector NSNs
Use NSN 6350-01-575-4494 to get a front heat
detector for the CAIMAN Plus, RG33 CAT II,
RG33 SOCOM, RG33 HAGA, RG33 CAT II Plus,
and RG33 HAGA Plus MRAP vehicles. NSN 6350-
01-575-4487 gets the rear heat detector for
the same vehicles. By the way, these new heat
detectors replace the old-style detectors shown
in Fig 46 of TM 9-2355-108-24P and Fig 50 of TM
9-2355-319-24P.
MaxxPro Dash
Straight Axle
Tell your buddies in support that NSN 2530-01-
570-2511 gets the front straight axle assembly
for the MaxxPro Dash straight axle MRAP
vehicle. This NSN replaces the parts info shown
as Item 005 on Page 2-3 in TM 9-2355-324-24P.
MaxxPro MRAP Batteries
Do not mix different types of batteries in
MaxxPro MRAP vehicles. Mixing batteries burns
out the vehicle’s voltage regulator. Only use
all Exide batteries, NSN 6140-01-446-9506, or
only all AGM Hawker Armasafe Plus batteries,
NSN 6140-01-485-1472. Remember, all batteries
installed in the vehicle need to be the same
type, and the Exide and Hawker are considered
different types.
MRAP Light Bar Kit
To get a light bar kit for the MRAP RG33L CAT
II Plus, NSN 2355-01-562-6675, or the M1237A1
RG33L HAGA Plus, NSN 2355-01-564-4340, use
NSN 6220-01-586-3096. This new kit provides
360-degree
illumination
and
night-vision
enhanced capabilities. The kit includes 4 light
bars, 2 search lights, control panel, vehicle
interface box, electrical harnesses, brackets and
attaching hardware. Installation instructions
come with the kit. If your RG33 MRAP vehicle
has the Rhino IED defeat equipment installed,
you will need to order the Rhino adapter kit
that comes with NSN 6220-01-588-7845.
FMTV…
All
affected
FMTVs are NMC
until they are
inspected
and
repaired!
Engraved
“S” on brake
converter
means it has
overstroke
protection
These brakes
have been acting
funny lately.
Let’s hope
they’re working
properly now!
Yikes!
There it
goes,
pulling to
the right
again! What
the heck’s
going on?
I’ve suffered
overstroke!
That’s what’s
going on!
no matter
what is on
your mrap
wish list this
year, we’ve
got you
covered!
709 14-15.indd
1-2
11/7/11
2:24 PM
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