PS Magazine - TB 43-PS-568
PS, The Preventative Maintenance Monthly
ISSUE 568
MARCH 2000
PS 568
7
MAR 00
uel goes through fuel injectors like grease through a grease gun as long as
there’s no water in the fuel.
Any water going through the injectors is cool. The injectors are hot. When
they meet, the injectors crack, and then the engine won’t run.
That’s why your FMTV has a fuel-water separator mounted on the engine. It
keeps water out of the fuel.
There’s only one problem: You’ve got to make an after-operation PMCS check
to keep the fuel-water separator on the job. If you don’t drain the water from the
separator as needed, water eventually ends up in the fuel going to the injectors.
Check for water in the fuel-water
separator bowl like it says in Item 33
in TM 9-2320-365-10 for 2
1
/
2
-ton mod-
els and Item 32 in TM 9-2320-366-10
for 5-ton models. If there is water in
the bowl, drain it.
Put a container under the drain hose,
turn the knurled nut on the separator to
the left, and let the watered-down fuel
drain until only pure fuel comes out.
When it does, close the drain valve
and dispose of the fuel in the container as directed by your unit’s SOP.
Do this after
every
operation. Yes, you’ll have to raise the cab, and yes, you’ll
have to look closely to determine if there’s water in the separator bowl.
But it’s just part of the job.
oose capscrew nuts on the M1074
and M1075’s self-guided coupler sleeve
can lead to the separation of your trac-
tor from its trailer.
These nuts attach the coupler sleeve
to the tractor’s rear crossmember. If
enough nuts get loose, the coupler can
break away, leaving the trailer behind.
So, give the nuts a close inspection
right now.
You’ll have to get underneath to
make the check, plus you may have
to clean the nuts off and use a flash-
light. Do whatever it takes.
If you see that any of the nuts are
loose, damaged or missing, or if you
can see that they have moved—
chipped or scratched paint around
the heads—tell your mechanic.
Family of Medium Tactical Vehicles . . .
Palletized Loading System . . .
He’ll make the repairs or replace-
ment and torque the nuts to 500 lb-ft,
as called for in Change 4’s revision to
Para 15-13 of TM 9-2320-364-20-3.
Earlier torque requirements of 320 lb-
ft are not enough to ensure the coupler
remains tightly mounted.
If the nuts do not show any damage
or looseness, your mechanic should
torque them to 500 lb-ft as soon as
possible.
we don't want
a cracked injector,
so drain the fuel-water
sepArator.
Drain fuel/water separator regularly
Torque self-coupler nuts to 500 lb-ft
oh,
no
!
we
just lost
our
traILER
!
PS 568
7
MAR 00
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