PS Magazine - TB 43-PS-603
PS, The Preventative Maintenance Monthly
ISSUE 603
FEBRUARY 2003
T
he alcohol reservoir under the excavator’s rear wheel well (curbside) takes a beat-
ing from thrown rocks, the elements, and the age of the vehicle.
This reservoir is part of the vehi-
cle’s compressed air system
antifreeze unit. The unit shoots
ethyl alcohol into the air system to
keep water from freezing in the air
lines.
A crack or hole in the reservoir’s
plastic housing means it won’t
hold alcohol. Without alcohol,
water freezes in the air system. Air
system failure is the end result.
So before you add alcohol to the system, make sure the reservoir can hold its own.
The Right Position
You’ll also want to make sure the air line antifreeze unit is set to the number 1
(open) position for cold weather.
And keep the reservoir filled, even in summer, so dirt and dust can’t get in
the system.
PS 603
FEB 03
49
PS 603
FEB 03
48
SEE…
M
echanics, the hydraulic hoses that mount next to the roadside edge of the radia-
There’s a clamp that holds these hoses in place. Sometimes the clamp gets mis-
placed when the hydraulic lines are replaced, or when the engine is overhauled by
support. Without the clamp, the hoses rub against the grill’s guard frame when the
Enough rubbing causes the hoses to spring a leak. That means the dozer’s blade
is out of commission. Without hydraulic oil, it won’t retract, elevate or push dirt for-
ward.
Before the day’s run, eyeball the hydraulic hoses where they pass through the
radiator grill.
Is the clamp snug against the hoses? Is it missing? If so, order a new clamp with
mechanic!
Can we get
a mechanic
over here!!!
Ohh, if only
my operator
had checked
my clamp!
you think
this
is bad?
Wait’ll we get
to the
rough
terrain!
Look for cracks in alcohol reservoir
is in place
D7G Tractor…
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