PS Magazine - TB 43-PS-591
PS, The Preventative Maintenance Monthly
ISSUE 591
FEBRUARY 2002
w
ater in the bed of your 5-ton dump truck usually means the drain holes are
stopped up. If the water stays there long enough, you’ll end up with a rusted-out
dump bed.
So eyeball the drain holes in the front
corners of the bed for dirt and leaves.
Look for holes that were painted over,
too. Remove any debris or paint residue
by running the tip of a ballpoint pen or
small screwdriver through the holes to
open ‘em up.
Another way to get water and snow
out of the dump bed—–especially when
your truck sits for long periods of
time—-is to keep the bed elevated. Use
the dump body support braces (bed-
locks) to hold the bed up and keep pres-
sure off the dump body’s main
hydraulic cylinder.
Page 2-19 of TM 9-2320-272-10 tells
how to use the dump body’s bedlocks.
PS 591
FEB 02
25
M929/A1/A2 Dump Truck…
130G Grader…
B
ig swings in day and night temperatures increase condensation in your road grad-
er’s air brake system. ‘Course, that leads to corrosion and that plugs up brake valves
and cylinders and causes brake failure.
So always drain the water from the
air tank at the end of the day. The
tank is located behind and under the
grader’s rear bumper hitch. Just open
the tank’s two valves to drain the
water. Be sure to close each drain
cock when you’re finished.
Because of its location, the air tank
is often overlooked. As a reminder,
have your mechanic use black CARC
paint to stencil “Drain Air Daily” on
the grader’s rear bumper near the
hitch. The stencils are part of the No.
1 Common shop set.
O
perators, be sure to clean out the main
frame above your grader’s circle drive after
every operation.
The main frame is a haven for mud, small
rocks, dirt and sand.
All that crud breaks down hydraulic hoses
inside the main frame. And when hydraulic
hoses start to rot, they leak. Without hydraulic
oil, the circle drive won’t rotate and the cen-
tershift can’t position the grader’s blade.
So use a high-pressure hose to clean out the
crud after operation.
Keep bed elevated
with support braces
hey!
I
don’t want
to hear
any
bed-wetting
jokes!
Who-?
us!?
Remove debris
with pentip or
screwdriver
The grader’s circle drive is a
haven for mud, small rocks,
dirt and sand
Circle Drive Scoop
I’m going
to stencil
drain air
daily
on
the rear
bumper.
Open each valve
to let water out
no
way,
man
haw!
591. 24-25 (X)
1/8/02
3:18 PM
Page 1
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