PS Magazine - TB 43-PS-687
PS, The Preventative Maintenance Monthly
ISSUE 687
FEBRUARY 2010
18
PS 687
FEB 10
So disregard the artwork showing the position of the shutoff valve for this procedure.
The valve is open when the handle is straight down
in line
with the valve,
not
at a right
angle. Make sure the valve is in the open position when performing this task. And make a
note in your paper TM.
Dear Half-Mast,
My unit is deployed to Southwest Asia. One of our M1088A1s short-
circuited and cooked the green PDU circuit panel on the passenger side of
the dashboard.
When ordering the part from TM 9-2320-366-24P, I ended up with the
wrong part-a black, plastic board that doesn’t even fit on the truck!
I have searched LIW and LOGSA for an updated TM with no luck. Do you
have an IETM or an NSN that helps? This truck is NMC and is a crucial
piece of equipment for our unit’s mission.
Any help you can offer would be appreciated.
SGT R.R.
Dear Sergeant R.R.,
You bet. Order the
next higher assembly,
the power distribution
panel’s printed circuit
board (with fuses),
NSN 5998-01-532-
1911, if your A1
truck’s serial number
is within the 11,438 —
99,999 range.
TM 9-2320-365-24&P and TM 9-2320-366-24P are used
only
for FMTV AO
trucks with a serial range of 00001 – 11,437. Use IETM 9-2320-391-24&P (EM
0195) dated March 2008, for PMCS, maintenance and ordering repair parts for
2
1
/
2
- and 5-ton A1 trucks. The IETM is a four compact-disk set and each CD needs
to be loaded onto a laptop computer or MSD prior to viewing.
FMTV A1 trucks use two serial number ranges based on the con±guration of the
truck. Earlier A1 trucks equipped with the 3126 CAT engine have a serial range
of 11,438 – 99,999. Newer A1 trucks with the C7 CAT engine use a serial number
range of 100,001 and above. You’ll ±nd these serial numbers on the data plate
found on the left side of the steering column.
These IETMs are sent through normal pin-point distribution. All TACOM LARs
and BAE FSRs should have copies of this IETM and be able to load the manuals
onto your MSD. If you can’t contact your LAR or FSR and need a copy of the
FMTV’s IETM, email the vehicle’s equipment specialist, Mr. Tomas Tarrell:
tomas.tarrell@conus.army.mil
The valve should only be closed for maintenance purposes. Secure the valve in the open
position using a zip tie, such as NSN 5975-01-034-5871. Any zip tie will do, and you should
be able to Fnd them in your motor pool.
There is also a kit, PN 57K2035, which disengages the PTO when the valve is in the
wrong position. This kit has already been installed on wreckers with serial numbers greater
than 113414. If you need this kit, get it through BAE’s Veronica Mallard at (281) 616-6354
or email:
veronica.mallard@baesystems.com
How does the PTO—or power
takeoff—relate to the shutoff valve?
The PTO drives a hydraulic pump that
pressurizes the hydraulic system to
make it work. If the shutoff valve
isn’t
open, too much pressure builds on
the hydraulic system when operating.
That can lead to blown seals and
even blown hydraulic lines, which can
render the whole system NMC.
PDU
Circuit
Board
Info
±MTVs…
PDU
Circuit
Board
Info
NSN 5998-01-532-1911 gets the circuit board with fuses
tacom will
include these
corrections
in the next
revision!
what th—!?
this is
not
what
I ordered!
You oughta
write to
Half-Mast!
Shutoff valve is shown closed
687.18-19.indd
1-2
12/21/09
4:28:56 PM
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