PS Magazine - TB 43-PS-668
PS, The Preventative Maintenance Monthly
ISSUE 668
JULY 2008
10
PS 668
JULY 08
11
PS 668
JULY 08
M
echanics, you might think that fl
ushing your M1114’s A/C system with denatured
alcohol will help keep you cooler in the heat. And if you’re in the sandbox, you might
have already tried this. That might work for the short-term, but it can hurt you in the
long run.
Why is that? Denatured alcohol can dry out the O-rings. And over time, it will lead
to refrigerant leaks.
Dear Editor,
We had several ASVs with a buzzing problem in the intercom system here
in Iraq. After troubleshooting an ASV intercom, I found a loose plug. Then I
found that all of the “buzzing ASVs” had the same loose plug!
If these plugs get loose, the intermittent contact causes an off-and-on
buzzing in the headsets. Plus, the gunner can lose communications entirely!
Tell your readers they can get rid of the buzz by doing what I did. Lean
into the left side door and reach way down under the gunners platform.
You will find two large plugs. One has a 90° angle. Carefully turn the plugs
clockwise until they are tight.
SFC Patrick Goyer
512th Maintenance Co.
Camp Taji, Iraq
Editor’s note:
You just told them, Sergeant!
Thanks for sharing that buzz kill!
So order NSN 4130-01-549-7064 to get a fl
ushing kit, instead. Make sure you use
the right fl
ushing procedures, too. Eyeball those on-line using this link:
Then click on AC and select AC Flushing Procedures Digest Article ECV
HMMWV to pull up the info.
Getting the
Intercom to Buzz Off
M1114 HMMWVs…
A/C
FLUSHING
TIP
can you
hear me
now?
A/C Component
Outlet Tube
Flush Gun
Inlet Tube
Drain pan
Rubber Hose
Flushing
Cylinder
Armored
Security
Vehicle…
a little
privacy
please!
what
is
all
that buzzing!
Use kit for
fl
ushing A/C
668.10-11.indd
1-2
6/3/08
3:40:43 PM
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