PS Magazine - TB 43-PS-554
PS, The Preventative Maintenance Monthly
ISSUE 554
JANUARY 1999
PS 554
Without movement, oil
stays in bottom of hub
Pin the Blame on IGV Pin
D
rivers, if your M1-series tank loses engine power and the
FUEL CONTROL FAULTY light keeps coming on,
look for a missing inlet guide vane (IGV) actuator
pin.
The spring-loaded bearings at the tip of the
pin get gummed up with oil and dirt. The
bearings lose their tension and the pin falls
out.
Have your mechanic check each pin at
every semiannual service. If the bear-
ings don’t spring back when they
are pressed and released, re-
place the pin with NSN 5315-
01-205-8647.
rivers, if your M1-series tank hasn’t
moved for awhile, you could have a
problem the next time you drive it.
When a tank sits for a long time—
three to four weeks—the oil in the
roadwheel hubs sits, too. The top part
of the hub seal doesn’t get lubed, so it
dries out and cracks. You end up with
leaking hubs during your next mission.
So, move your vehicle at least every
two weeks. Just a few feet is enough
to turn the roadwheel hubs and get
oil to the gaskets.
you re
a long way
from home,
li’l fella!
SNIFF!
SNIFF!
My bearings
ja mm e d
! I
fell out
and now i’m
lost
!
three
leaky
roadwheel hubs!
how
did that
happen?
what did
you expect?
i haven’t been
moved in a
month!
PS 554
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