PS Magazine - TB 43-PS-586
PS, The Preventative Maintenance Monthly
ISSUE 586
SEPTEMBER 2001
LET’S TALK TORQUE WRENCHES
PS 586
SEP 01
54
MSE Shelters . . .
T
he backup batteries in your mobile subscriber equipment (MSE) shelter aren’t
its primary power source, but that doesn’t mean you should treat them like
second-class citizens.
Unless you have maintenance-free batteries, ignoring them will lead to
corrosion. When enough corrosion builds up, it drips onto the vent fan and its
wiring. Pretty soon, wires short out and the vent fan won’t work at all.
That lets dangerous fumes build up in the shelter. And it takes only one small
spark to ignite the fumes.
So check the backup batteries and the battery box fan daily prior to perform-
ing the equalize charge procedure. You’ll not only stop corrosion and its related
problems, but the backup batteries will work when you need ‘em.
my batteries
haven’t been
checked for
a
long
time!
I feel a
bad bout of
corrosion
coming on!
Keeping torque wrenches up to
snuff is a tough job. Your general
aircraft maintenance manual, TM
1-1500-204-23-9 has some info
on taking care of them.
Even more info
can be found in TM
9-243,
Use and Care
of Hand Tools and
Measuring Tools.
plus,
keep
these
points in
mind…
Corrosion on batteries…
…drips onto fans and wiring
Remember that the high
and low readings of a
torque wrench scale will
not be as accurate as the
readings in-between. So use
a wrench where the torque
you need falls in the middle
two-thirds of the scale.
Before you torque, clean
all parts involved with dry
cleaning solvent. Clean the
threads of the fastener,
the mating surfaces and
the head of the wrench.
Not all torque wrenches
are alike. Some torque
wrenches may look the
same, but they can be
quite different.
If a maintenance task
requires torque in
inch-pounds, don’t
grab a foot-pounds
wrench. Eyeball the
wrench markings to
pick the correct tool.
Tools.
..
586. 54-57 (C)
7/29/01
3:41 PM
Page 1
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