PS Magazine - TB 43-PS-735
PS, The Preventative Maintenance Monthly
ISSUE 735
FEBRUARY 2014
6
PS 735
FEB 14
7
PS 735
FEB 14
O
perators, air and water aren’t a winning combination if they mix. That’s why
you’ve gotta drain the air tanks on your FMTV every day after operation.
If
you
don’t,
moisture
builds up. It creates corrosion
that plugs up the entire air
system,
including
brake
valves and cylinders, CTIS
±lters, and gladhands. It can
lead to brake failure, too!
So make sure you drain
the water from each air tank
at the end of each day. Just
open each tank’s valve until
no more moisture comes out.
Then close the valve tightly
when you’re done.
Dear Half-Mast,
I have been trying to load test an M1089A1 wrecker’s material handling
crane. But the maintenance support device (MSD) doesn’t have a fault in the
troubleshooting index for
“crane fails load test.”
Where do I go from here?
SFC T.D.S.
Dear SFC T.D.S.,
During the load test, there are notes that tell the tester to refer to
“troubleshooting”
to determine failure of the crane’s overload protection system.
Enter
“troubleshooting”
and type in the serial numbers for the truck and
transmission when prompted.
Next, select
“electrical system”
and
“material handling crane.”
Once you’re in the MHC section, there are plenty of selections
you can make.
Moisture rusts air system components
Drain moisture from all air tanks after operation
FMTV…
Gotta Drain Air Tanks
M1089A1 LMTV…
What’s the
Next
Step
for Wrecker Load Test?
your crane
failed
the load test, but
the troubleshooting
index doesn’t tell
me what to do next.
…
“When
in doubt,
write to
Half-Mast!”
you know
what I
always
say…
what
a long
Day!
yeah! let’s graB
some chow and take
it easy for a while.
aren’tcha
gonNa
drain
my
air tanks first!?!
Don’t
leave
the tanks open.
That won’t get
rid of water…
…
it just
creates
more.
what!? Why?
An open
valve allows
condensation to
build up in the
tank overnight.
When you close
the tank in the
morning, just
before you’re
ready to drive,
water gets
trapped inside
the tank.
More
water
means
more
corrosion.
h
e
y!
735 06-07.indd
1-2
12/31/13
11:16 AM
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