PS Magazine - TB 43-PS-726
PS, The Preventative Maintenance Monthly
ISSUE 726
MAY 2013
10
PS 726
MAY 13
11
PS 726
MAY 13
Use Wear Gage
Use drive sprocket wear gage, NSN
to
check
sprocket
wear on the D7G and D8 tractors.
Set the point of the gage marked for
the tractor you’re working on between
the
teeth
of
the
drive
sprocket.
If
the
point
doesn’t
touch
bottom,
the
sprocket’s OK. If it touches, get support
to replace the sprocket.
Track Shoe Gage
Use the broad-based depth gage, NSN
5210-00-221-1902, to measure the height
of the grousers. Set the base across two
adjacent grousers and measure down
to the plate on the D7s and D8s. If the
grouser is less than 1
1
/
2
inches, replace
the shoe.
M
echanics, you need two special tools when you eyeball the tractor’s sprocket and
track shoes—a wear gage and a track shoe gage. Use them for measurements every
250 hours or quarterly, whichever comes Frst.
Backhoe Loader…
Buckets Need
Some Rest!
D7G Tractor…
Track Wear Info
when you park me,
lower
my front
bucket to the
ground. That’ll
save
my hydraulics!
Operators, you can save
a lot of wear-and-tear
on your backhoe loader’s
bucket by following
One
very simple rule…
When you park your
loader, lower the
bucket down onto
a board or other
piece of wood
sitting directly
on the ground.
Resting the bucket takes the
weight
off
the lift cylinders.
and, When not in use,
lock the backhoe boom in
the
transport
position.
That allows the boom
lock to take the weight
instead of the hydraulics.
Using a piece of wood keeps the bucket
from
sticking
to muddy ground.
If point touches, drive sprocket is shot
Measure down to plate with gauge
oh, is it that
time again?
did you bring
your
tools?
oh yeah, this
sprocket is
shot.
Now to check your
track shoes!
726 10-11.indd
1-2
3/25/13
1:41 PM
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