PS Magazine - TB 43-PS-592
PS, The Preventative Maintenance Monthly
ISSUE 592
MARCH 2002
2.
Use the track and sprock-
et gauge to check grouser
height. Place the gauge
against the grouser with the
hole down. If you can see
the grouser through the
hole, it’s OK. If the grouser
is
1
∕
8
inch or less, replace the
shoe.
4.
Eyeball the center guides
for cracks or bends that
could damage the road-
wheels. Replace any that
are damaged or are
1
∕
8
inch
thick or less.
3.
Check each of the shoes for cracks, bends and breaks. If you spot one, the carri-
er is NMC until the shoe is replaced.
5.
Inspect the track pads.
Replace any pads that have
1
∕
16
inch or less showing
above the grousers.
MAR 02
18
Never extend the track adjuster
more than 17 inches as measured
between the mounting screws. If
the track is still too loose after the
adjuster has reached 17 inches,
release tension and remove a track
shoe. The adjuster can buckle if
you try to extend it past 17 inches.
Track Inspection
For
all
track
inspection, make
sure you check
the
inside
as
well as the
outside
of
the track.
1.
Eyeball the track shoes for
worn bushings. A pin nut that is
off-center, touching, or protruding
from the bushing bore is a sure
sign of a worn bushing.
Double-check any suspect track
shoes with the track and sprocket
gauge. Both gauge pins should
fully insert into the bushing bores
between the pin nuts. Replace any
unserviceable shoes.
Look for
off-center
pin nuts…
…then
check with
track and
sprocket
gauge
Replace
unservicable
shoes!?!
But…
but… hold on! I’m
not
that
bad!
Grouser
visible
through
hole?
Shoe is
OK
Look for bent
or cracked
center guides
Adjuster at
17 inches?
Time to
remove a
shoe
It’s
too late for
me
to be
repaired.
Don’t let it be too
late for the tracks
of your m113!
Pads should be
above grousers
592. 16-19 (C)
2/4/02
12:40 PM
Page 3
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