PS Magazine - TB 43-PS-690
PS, The Preventative Maintenance Monthly
ISSUE 690
MAY 2010
51
PS 690
MAY 10
Start Up, Cool Down
Your BHL needs to warm up and cool down—just like a runner before and after
a race. Immediately after start-up, make sure you have engine oil pressure. Run the
engine at idle for about 2 minutes to warm it up.
Eyeball the low engine oil pressure warning lamp during warm up. If the light
goes on and stays on, that means there’s
no
or low engine oil pressure. You’ll also
hear an alarm that tells you something’s wrong. Shut down the engine if you hear
the alarm with the light on. Call in your mechanic.
Engine warm-up gives the oil time to lubricate the parts. It also gets the engine
warm enough to boil off condensation caused by normal engine breathing. That
way, you don’t have to worry about condensation mixing with the oil and forming a
sludge that’ll clog the engine.
After running the backhoe loader at the worksite, let the engine cool down before
shutting it off. Idle the engine for at least 2 minutes. The engine needs to cool down,
or the heat can crack the block, warp a head or valves, or bake the oil until it’s not
slick enough to lube the bearings.
Traversing Slopes
How you move your backhoe during operations is as important as your start up
and shut down procedures.
Keep your backhoe loaders low and balanced when you travel across rough or
hilly ground.
If you’re hauling a bucket of dirt, keep it low until you’re ready to drop a load. A
full bucket carried overhead makes the BHL top-heavy.
When you’re on the move, gullies, bumps and slopes can pack a real jolt and rock
the vehicle from side to side. With enough bouncing, it could tip over.
•
Do not approach a slope greater than 15 degrees on hard ground.
The maximum slope, on ground that is
not
solid, is less than 15 degrees.
•
Do not move the vehicle downhill with the direction control lever in neutral or
with an engine speed greater than 2,500 rpms.
•
You’ll also want to be cautious using the vehicle’s clutch cutout switch when
operating on a hill. When the switch is pushed, the transmission is disengaged
from the drive wheels. Use the service brakes to stop the vehicle.
Backhoe PM Pointers
Backhoe Loader (BHL)…
Backhoe PM Pointers
if you see the
light
and
hear the
alarm, it’s time to
shut down and call
in your mechanic!
operators, the new
j.I. case backhoe
loader (bhl) is a
real go-getter for
excavating, moving
and dumping dirt and
sand at the worksite.
to keep your BHL
on the job, read
and use the info in
tm 5-2420-231-10.
here are some
other things you
operators need
to keep in mind
while moving the
backhoe loader…
690.50-51.indd
1-2
4/6/10
5:35:01 PM
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