PS Magazine - TB 43-PS-572
PS, The Preventative Maintenance Monthly
ISSUE 572
JULY 2000
PS 572
11
JUL 00
PS 572
JUL 00
ome of the plastic hoses used for the M1070’s service and emergency air
lines aren’t holding up to use and the elements. That makes for unsafe hauling of
M1 tanks.
Take a look at both the service and emergency air hoses.
Check Hoses
Check the service and emergency hoses for cracks or kinks like so:
Grasp one end of the coiled section (with four or five coils between your
hands) and stretch it 15 to 18 inches. Repeat the process at the other end of the
hose.
Grasp an area in the center of the
coiled section in each hand (with four
or five coils between your hands) and
stretch that coiled section 15 to 18
inches.
Repeat the entire process for the
other hose.
Report These Problems
Let your mechanic know if you hear a cracking sound when the hose is
stretched, or if you see cracks or breaks at any time.
If you find any damage,
do not drive
the HET until both air hoses are replaced
with NSN 4720-01-106-9681. Then send an SF 368, Quality Deficiency Report,
to TACOM.
Palletized Loading System . . .
t’s not enough that you drain the two
driver’s side air reservoirs and the two
reservoirs on the passenger’s side of
your PLS tractor.
You’ve also got to drain the reser-
voir behind the access cover at the front
end of the truck.
If you don’t drain all five reservoirs
as part of your after-operation PMCS,
condensation lets corrosion get a foot-
hold in your air brake system. That
leads to brake failure.
So, pull the drain cable on each res-
ervoir until no more water runs out,
then release it.
Watch what you pull on at the front
reservoir, though. The horn’s electrical
wire runs right next to the drain cable.
Pull on it and you could disconnect
the horn.
M1070 HET Tractor . . .
Drain driver’s side air reservoirs.
..
...passenger’s side air reservoi
rs.
..
that
takes care of
draining those
four
air reservoirs.
not so
fast,
hotshot! you
forgot
the
front
reservoir!
if these
lines are
good
,
we'll hit the
road!
I
I
Second valve
not shown
Second valve
not shown
...
and
front end air reservoir
Check gladhand hoses for damage
PS 572
JUL 00
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