PS Magazine - TB 43-PS-612
PS, The Preventative Maintenance Monthly
ISSUE 612
NOVEMBER 2003
PS 612
NOV 03
49
w
arm days and cool nights cause condensation to form in the hydraulic excavator’s
fuel tank.
That means you operators may have
to drain the fuel/water separator
before each day’s operation. Not
draining the separator will leave water
and crud in the excavator’s fuel sys-
tem. Then the engine runs rough.
Drain
the
separator—located
behind the curbside engine access
door—by turning its drain valve coun-
terclockwise and pressing the pump
on top. Collect drained fuel in an
approved waste container. Never
dump it down a drain or let it run on
the ground from the separator’s drain
hose.
If the fuel is clear, you’re OK. If the
fuel doesn’t run clear after you’ve
drained half a pint or so, close the
valve and report it to your mechanic.
Also, make sure your mechanic
replaces the fuel filter at the quarterly
service.
PS 612
NOV 03
48
HYEX…
Oil Level
Reading
R
ead and heed the placard next to the hydraulic oil tank’s sight gauge on your
HYEX excavator. You’ll find it inside the curbside engine access door. In other
words, do the cold oil check with the arm cylinder fully retracted and the bucket
cylinder extended. Lower the boom so the bucket is on the ground.
Leaving the excavator up (in the
stowed position) during an oil level
check will give a false reading.
The hydraulic oil is in the cylin-
ders, causing low readings in the
reservoir. Overfilling the tank puts a
strain on the excavator’s hydraulic
system and may cause leaks.
So play it safe. Make sure the
excavator’s arm is in the proper
position before you eyeball the oil in
the hydraulic oil tank’s sight gauge.
Read placard
next to
hydraulic oil
tank’s sight
gauge
Make sure I’m
in the
right
position
before a cold
oil check!
1.
Turn valve
counter-
clockwise
3.
Drain into an approved waste container
2.
Push
pump
that con-
densation’s
gonna
make for
rough run-
ning in the
morning…
…if you
guys don’t
drain my
fuel/water
separator!
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