PS Magazine - TB 43-PS-556
PS, The Preventative Maintenance Monthly
ISSUE 556
MARCH 1999
MLRS . . .
If you push the lever back to the ON
position, fuel will continue to trickle
through the fuel lines into the engine
cylinders, past the piston rings and into
the oil. Thinned-out oil doesn’t lube
well, so parts wear out quicker. Your
engine could lock up.
O-rings
Friction from constant use of the fuel
shutdown lever wears out the O-rings
on the fuel shutdown adapter stem.
Worn out O-rings are just as bad as
leaving the shutdown lever ON. Fuel
seeps past the O-rings and ends up con-
taminating the engine oil.
Mechanics, check the O-rings dur-
ing semiannual maintenance. Look for
cracks, tears or abrasions that could
allow fuel to pass by.
but i left
your
fuel shutdown
lever off
! i don't know
how fuel got
into
your oil
!
how
about getting
my o-rings
checked
!?
Keep lever up in OFF position
when vehicle is shut down
hen an MLRS ends up with fuel in
the engine oil the culprit is usually a
thoughtless driver, bad O-rings, or both.
Drivers
Make sure you always leave the fuel
shutdown lever pulled up in the OFF
position after shutting down the
vehicle.
Check O-rings inside shutdown adapter
If the O-rings show signs of damage—
nicks, cuts or wear—replace ’em. Just
make sure you use the right O-rings.
There are two different fuel shutdown
adapters used for the MLRS. If the adapter
has RM0097 imprinted on the side of the
adapter valve, use the O-rings from kit,
NSN 4810-01-389-6406. All other adapt-
ers take the O-rings found in kit, NSN
Dear Editor,
A couple of trips to the field are usually all it takes for a G/VLLD’s
eyepiece cup to come off and disappear. Without the cup, it’s difficult
to sight through the G/VLLD.
Use electrical tape or something similar to tape the cup to the
eyepiece. Wrap the tape twice around the cup and eyepiece, making
sure the tape doesn’t interfere with the eyepiece’s movement.
Troy Andrews
Directorate of Logistics
Ft Riley, KS
G/VLLD . . .
Eyepiece Saver
PS 556
19
MAR 99
PS 556
18
MAR 99
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