PS Magazine - TB 43-PS-717
PS, The Preventative Maintenance Monthly
ISSUE 717
AUGUST 2012
37
PS 717
Clean out GDU fault log—
Weekly,
go
into
the
gunner’s
display unit (GDU) and clean
out any faults in the maintenance
manager fault log. Too many
faults
in
the
log
can
throw
faults into the HIMARS system
and then you’ve got needless
troubleshooting.
Route W18 cable carefully—
When you’re operating the launcher module (LM)
remotely, make sure to route the W18 cable away from the vehicle. Otherwise, when
the LM is moved the cable can catch on something like the tire and be ripped out.
Dear Half-Mast,
What is the correct tire pressure
for the Patriot’s M860A1 trailer
445/65R tires? We are getting
trailers that have TP 105 stenciled
over the bumper, but the trailer TM
says the pressure should be 65 psi.
W.R.
Dear Mr. W.R.,
Actually the Firestone® bias tire, NSN 2610-00-142-5136, that had been used for
the Patriot trailer is no longer available. It has been replaced with the 445/65R22.5
Goodyear® or Michelin® radial tire that comes with NSN 2610-01-286-5798. The
radial should be in±ated when the tire is cold to 100-105 psi. If you still have the old
bias tires and they’re still good, in±ate them cold to 65 psi and continue
to use them. Just don’t mix bias and radial tires on the same trailer.
This info will be added in the next change to TM 9-2330-357-14&P.
Dear Editor,
Both the Firefinder and Sentinel radar systems generate a tremendous
amount of juice that could easily electrocute someone if a safety device
fails. Here are two tips to ensure those devices work:
•±
On both the Firefinder and Sentinel,
the high voltage interlock switch is
supposed to pop out whenever you
open the compartment door. That
shuts down the voltage and makes it
safe to work inside the compartment.
But sometimes the switch can
stick, especially if you’re operating
around lots of blowing sand or dirt.
So, as part of your BEFORE PMCS,
it’s a very good idea to make sure the
switch is actually popping out when
you open the compartment door. If
it’s sticking, tell your repairman so he
can clean the switch.
Tips to Keep
You
Safe!
Firefinder,±Sentinel
Radar±Systems…
Tips to Keep
You
Safe!
What is the
CORRECT
Tire Pressure?
Make sure voltage interlock
switch is not sticking
here are
some
high
voltage
tips
from
ft sill!
Patriot±Missile±System…
The TM says
inflate your
tires to
65,
but
I’m not sure
that’s right.
I’ve got
NEW
Tires
since that
tm Came out! my
new
tires now
need
105
psi.
Clean
out faults
in GDU
fault log
weekly
Route W18 cable
for remote away
from truck so it
doesn’t catch on
anything
717 36-37.indd
1-2
6/22/12
11:48 AM
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