PS Magazine - TB 43-PS-637
PS, The Preventative Maintenance Monthly
ISSUE 637
DECEMBER 2005
TM
9-2320-387-10 (Oct 97, w/Ch 2) says HMMWVs with 6.5 liter turbocharged
engines (M1113, M1114, M1116, M1151, and M1152) that run at coolant temper-
atures above 230°F are NMC.
But, according to the manufacturer’s specs,
those engines are designed to withstand a
maximum top tank temperature of 250°F
(±5°F).
So what does that mean to you?
According to TACOM maintenance adviso-
ry message (MAM) 05-037, a temperature
gauge that reads about 230°F no longer makes
the vehicle NMC. If the temperature gauge
reaches 240°F, you should use caution and be
aware of the vehicle’s performance. If the
HMMWV’s transmission defaults to second
gear, slow down if the OPTEMPO permits.
Until TM 9-2320-387-10 can be updated, pencil in this change to PMCS Item 16c
on Page 2-39. For the straight scoop, check out the MAM on-line:
You’ll need a AEPS username and password to view the MAM. You can also
access it using your AKO username and password.
PS 637
DEC 05
13
M978 HEMTT Tanker…
O
perators, just remember that
“What
goes on, must go off.”
It’s OK to use the free flow (gravity
feed) valve for bulk fuel transfer from your
fuel tanker. But for your sake, remember
to turn the valve off when you’re finished.
Leave the valve on and you’ll end up
spilling gallons of fuel on the road when
you head up an incline. When that hap-
pens, you’ll soon make the acquaintance of
your environmental folks. And that’s one
meeting you want to avoid!
M1101/M1102 Mounting Bracket
Use NSN 5340-01-516-8875 to get the mounting bracket for the landing leg on these
2-wheel cargo trailers for the HMMWVs. Make a note until this NSN is added to Fig 33
of TM 9-2330-392-14&P.
FMTV - Buyer Beware
Vendors sell products directly to Army posts, camps and stations. No news there,
right? Problem is, buying products that way, off line, bypasses the vehicle’s program
manager. That means you operators and mechanics could be left with an unsafe and
unapproved product, not to mention lack of logistical support. So play it safe and order
items only from the vehicle’s technical manuals.
PS 637
DEC 05
12
Turbocharged HMMWVs…
Close gravity feed valve
after fuel transfer
Smell
Fuel?
guess
that
means
you’re
nmc!
nope!
not anymore!
tacom mam 05-03
7
raised my limit!
Vehicle no longer NMC
if temperature is 230°F
your engine
temperature
gauge hit
230°f!
637.12-13(C!).qxd
11/3/05
5:32 PM
Page 1
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