PS Magazine - TB 43-PS-720

PS, The Preventative Maintenance Monthly

ISSUE 720

NOVEMBER 2012
PS Magazine - TB 43-PS-720 - Page 3 of 33
3
PS 720
NOV 12
Ball Bearing Race Ring
1.
Remove the ball insert plug, NSN 2530-01-364-4956. Look for contamination,
unserviceable grease, damaged ball bearings and damaged or turned springs.
1.
Reinstall the ball insert plug and traverse the race ring 90°.
Never traverse the
turret without the plug in place or the springs will jam up and the bearings will
fall out.
2.
Remove the plug at the new position and inspect again.
Repeat the process until you’ve inspected the race ring at
four separate 90°positions. Don’t forget to reinstall the plug
after the final inspection.
M1-Series Tanks…
a little
wins the race
if you find
any
contamination
or damage,
tell your
mechanic.
here’s how to inspect
and lube the
two
types
of race rings…
no matter the reason,
too much dirt
or
too little lube
leads to
damage
to the internal components of the
race ring.
pretty soon,
your tank is
out
of commission.
he’ll contact support maintenance
so they can perform the race
assembly replacement, removal
and installation in WP 0809 of
TM 9-2350-264-23-2-5 (Jul 11).
sometimes the race
ring just doesn’t get
lubed monthly like it’s
supposed to.
crewmen,
contaminated
or skimpy lube
means your tank
turret’s race ring
assembly will
soon come to a
grinding halt.
why the
problems?
at other times, grease
gets washed away and
dirt is forced in when
high pressure water
or steam is used for
cleaning.
Remove ball insert plug…
...and look for contaminated grease
and damaged bearings or springs
what
the heck
is
that?
I was just
trying to
traverse
the turret!
it’s
my
race
ring!
it
needs
some
grease
fast!
720 02-03.indd
1-2
9/24/12
3:51 PM
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