PS Magazine - TB 43-PS-577
PS, The Preventative Maintenance Monthly
ISSUE 577
DECEMBER 2000
or your IFTE to test true, you must
be true to PM, especially these checks
and services:
Do weekly and monthly checks
.
Do the weekly self-test in FAULT DE-
TECTION mode like it says in Para 2-
30 in TM 11-6625-3173-12-1 and the
monthly self-alignment spelled out in
Para 2-31. Without these two basic
steps, the IFTE won’t test accurately.
Test the spare circuit cards
. It
won’t do any good to replace a faulty
circuit card with another faulty circuit
card. Every quarter, test all 20 spare
circuit cards and replace any that have
become defective.
Integrated Family of Test Equipment . . .
Avoid moisture
. Moisture can build
up in the van and cause electrical shorts
and corrosion. The best way to stay
dry is to run the IFTE’s dehumidifier
during rainy or humid weather. But
Before you test each circuit card,
it must be calibrated in the IFTE
.
The calibration procedure lets the IFTE
adjust to that card. If you don’t cali-
brate, the IFTE may flunk a good card.
Test spare circuit cards quarterly
To get rid of
moisture, use
dehumidifier.
..
even if you’ve run the dehumidifier,
it’s still a good idea to turn on the
PRIME POWER 3 switch at start-up,
shift the ECU to COOL, and let the
ECU run for 45 minutes. That will re-
move any remaining moisture.
Then at shutdown, shift the ECU to
VENT and let it run 5 minutes to get
rid of any moisture that’s collected dur-
ing operation.
If the IFTE fails to self-test after
it’s been moved or been left sitting
for weeks, reseat its circuit cards
.
Movement or lack of use can hurt the
cards’ connections. Often just reseating
the cards cures the problem.
before
you
do any
testing, you've
got to
pass
some
tests
yourself
,
mister!
test
?
i hope it's
multiple
choice
!
â–
â–
â–
â–
â–
how
nifty
!
i
passed
the
ifte test
!
...and turn
on PRIME
POWER 3
at startup
and
shutdown
Reseat circuit cards
39
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