PS Magazine - TB 43-PS-611
PS, The Preventative Maintenance Monthly
ISSUE 611
OCTOBER 2003
PS 611
OCT 03
M989A1 HEMAT…
PS 611
OCT 03
10
FMTV…
F
rost on the pumpkin in the morning means condensation was forming in your
FMTV’s fuel tank the night before.
So do your vehicle’s fuel system a big favor. Drain the fuel/water separator after
the day’s run.
Not draining the separator leaves water and crud in the fuel system. That causes
corrosion in the engine’s fuel injectors. Then the engine runs rough, stalls, or won’t
run at all.
Open the separator—located on the roadside behind the cab—by turning its drain
cock clockwise. Dispose of drained fuel in an approved hazardous waste container.
Never dump it down a drain or on the ground.
If the fuel is clear, you’re OK. If the fuel doesn’t run clear after a few seconds,
close the valve and report it to your mechanic.
Also, make sure your mechanic replaces the fuel filter twice a year.
…to
keep your
hemat
mission-
ready.
Jot ‘em
down…
Brake Parts
Some of the NSNs for the trailer’s air
brake parts have changed. Make a note of
these new numbers in Fig 13 of TM 9-
2330-383-14&P.
M989 Helical Spring
NSN 5360-01-390-6448 gets the trailer’s
helical spring. The NSN shown as Item 2,
Fig 4 of TM 9-2330-368-14&P w/change 1
is no longer available.
Radial Tires
Bias-ply tires are no longer avail-
able for the trailer. So if your trailer
still has bias-ply tires, when one tire
needs replacing, replace them all
with radial tires. Radials last longer
and help the prime mover get better
mileage.
Get the 385/65R22.5, load range
J, radial tire with NSN 2610-01-436-
3332 or NSN 2610-01-452-0605.
Remember, bias-ply and radial
tires do not mix. So replace all tires,
including the spare, when you make
the change.
The recommended pressure for
the radial tires on the HEMAT is 105
psi for all road surfaces.
Part
Item
NSN
I hope you
guys got all
that… for
my sake!
jack frost
was out
last night!
Drain
separator
at end of
operation
Here’s a
stack of NSN
changes that
you mechanics
need to know
about…
believe me, I
know! I’ve got
condensation!
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