PS Magazine - TB 43-PS-614
PS, The Preventative Maintenance Monthly
ISSUE 614
JANUARY 2004
PS 614
3
Track Shoe Wear
T157 and T157I track shoes have
several critical wear areas:
•
grouser height
•
center guide thickness
•
pad thickness
•
sprocket window width
•
bushings
When one shoe wears out, it can
have a negative effect on the others, so
proper inspection during your before-
and after-operation PMCS is vital.
Follow the Condition Code F wear
guides below from TM 9-2530-200-
24,
Standards for Inspection and
Classification of Tracks,
Track
Components and Solid-rubber Tires.
Condition Code F means the track
shoe or pad is repairable if it’s
replaced
when
it reaches this level of
wear. Components and pads worn
beyond these limits are not repairable.
It costs a lot more to replace track
than to repair it.
JAN 04
M2/M3-Series Bradley…
Heavy loads, long
hours of operation,
high speeds and
extreme heat all
combine to
wear
out
track much
faster than it
would normally.
The
good news
is
that when you’re
working under those
extreme conditions,
track inspection
and preventive
maintenance can give
you the
vital edge
needed to get the
most life possible
out of your track.
1/8" - 1/4"
3/8" - 7/16"
3"
1 17/32"
or more
Center guide thickness:
3/8-in to 7/16-in at a point measured three inches
up from the shoe surface. If the center guide
measures more than 7/16 inch, keep using it.
Pad thickness:
Less than 1 17/32-in thick is unserviceable. A
pad worn down enough to allow metal damage
to the grouser can cause enough damage to
make the track shoe non-repairable.
Grouser height:
1/8-in to 1/4-in measured from the top of the
bushing boss to the top of the grouser.
Anything more than 1/4 inch is still OK to use.
While you’re at it, check for broken
or bent center guides. They can cause
the track to override and damage the
roadwheels and support rollers. They
can even throw a track.
beat the heat with PM!
something’s
really
wrong
here…
and we’ve got
places to be!
if it’s not
taken care of,
we won’t be
going any-
where!
it’s my
track!
Let’s face
it, crewmen.
Desert
operations
are
tough
on your
Bradley’s
track.
ow! ow!
ow! ow! ow!
ow! ow!
614. 02-03 (C)
11/29/03
4:14 PM
Page 1
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