PS Magazine - TB 43-PS-474
PS, The Preventative Maintenance Monthly
ISSUE 474
MAY 1992
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'·
Dear Editor,
Sand can do a real number
on the main power unit
(MPU).
I
it's sucked in the
MPU compartment± it can
ruin clutch plates, the
generator, the bearings on
the fan tower and belts. And
there's Rally not much to
stop the sand²
We've found scou³Ing
pads± NSN
7920-00±045²2³0,
do a good job F´ering out
sand² They're porous enough
to let in air, but not sand²
W
cut one pad to fit over
the µnlet hole in the MPU
compa¶ment and another to
fit over the inlet to the
Also, if the line
replacement unit filters for
the ·o¸ard Looking ¹nfrared
get too beat up in the field to
do their Jobs± you can put a
pad behind each filter to
kºp the ·L»¼ going until
you can get the F½ers
replaced²
SG¾ ¿oseph MaÀheggiani
(E
dit
'
·t Bliss±
TX
ors
nOte: Y
our
ad!=:.
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