PS Magazine - TB 43-PS-583

PS, The Preventative Maintenance Monthly

ISSUE 583

JUNE 2001
PS Magazine - TB 43-PS-583 - Page 8 of 32
3.
Pull back on the pump handle while someone else watches the
restriction gauge in the cab. If the gauge and hose are working right,
the gauge indicator will jump into the red range.
If the indicator doesn’t
jump into the red, there’s a
problem with the air hose or
the indicator. Check the
hose first for holes or poor
connections. If the hose is
bad, replace it. If the hose
is good, replace the gauge.
CW2 James Shoebridge
709th MP Bn
Camp Bondsteel
PS 583
JUN 01
12
Function Check
Dear Editor,
A HMMWV driver gets a
view of the condition of the
truck’s air cleaner element
every time he eyeballs the
air restriction indicator
while the engine is running.
If the indicator
never moves, though,
is it working right,
or at all?
1.
Pull the restriction
gauge air line off the air
filter housing.
2.
Place the air line in
the side of the pump that
normally holds the sample
bottle, using the four
fingers of your hand to
help seal the pump opening.
Put your thumb over the
other pump opening.
Does this
gauge move?
…and put it in
pump, then plug
other side and pull
back on handle
Gauge indicator
should jump into
the red
Pull line off
housing…
H
as your HMMWV done time in sand, mud or water lately? Probably so, since the
truck can go just about anywhere you want to take it.
If you’ve been there and done that, did you also service the air cleaner dump valve
afterward?
Seems that not a lot of folks even know where the dump valve is located, much
less service it when needed. They need to look at Para 3-16, Page 3-21, of TM 9-
2320-280-10.
All you have to do is squeeze the
dump valve to clear any sand, mud or
water from the air cleaner assembly.
Left in there, the stuff can clog up the
filter element and starve the engine of
clean air.
So where is the dump valve? It’s
under the air cleaner assembly, behind
a baffle that protects the air cleaner
from road debris. Reach a hand under
there and give it a squeeze.
DUMP VALVE SERVICING
DUMP VALVE SERVICING
Here’s a quick function check a mechanic can
perform by using the oil sample vampire pump:
Air Gauge
HMMWVs.
.
Someone
please
check my
air cleaner
element!
Squeeze dump valve to release dirt, mud,
or water from air cleaner assembly
583. 12-13 (I!)
4/28/01
6:17 PM
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