PS Magazine - TB 43-PS-615
PS, The Preventative Maintenance Monthly
ISSUE 615
FEBRUARY 2004
PS 615
FEB 04
20
HYEX…
A
drop in temperature may cause the
slowdown in your excavator’s upper
structure when it turns (rotates) during
construction operations.
But when it continues to move in an
unusual way or at a snail’s pace, the
structure probably needs some lube—
EL PRONTO!
The two grease fittings that lubricate
the structure’s swing bearing get over-
looked. They’re located directly under
the access cover for the boom’s
hydraulic hoses.
Make sure you follow these steps
before you grab the grease gun. You’ll
find them on Page 15-1 of TM 5-3805-
280-10 for HYEX Type I and II. Type
III’s steps are on Page 15-1 of TM 5-
3805-281-10.
D
on’t remove the strainer
from the excavator’s fuel
tank when you refuel the
vehicle.
The strainer keeps dirt
and crud from getting into
the fuel tank during refu-
eling. It also has a guide
rod that helps you leave
room in the tank for fuel
expansion.
The guide rod slides up
the strainer when its float
ball touches fuel. It’s a
quick way to tell you
when to stop refueling.
Without the strainer in
place, the tank can over-
flow when the fuel
expands–Not good!
So play it safe. Keep
the strainer in place when
you refuel.
Guide rods tell you
when tank is full
According to
Page 15-1 of
TM 5-3805-280-10,
repeat this
procedure
three
times
to get the
right amount of
lube into the
swing bearing.
• Park the excavator on level ground.
• Lower the bucket to the ground.
• Turn the auto idle switch off.
• Run the engine so the RPMs are one
third the way up the RPM gauge,
without a load, for two minutes.
• Lower the RPMs to the slow idle
position.
• Turn the key switch to OFF, then
remove the key.
• Make a tag that says DO NOT OPER-
ATE and attach it to the right control
lever inside the cab.
• Pull the pilot control shut-off lever
to the locked position.
• Give the fittings 10 shots of grease.
Do this during each scheduled service.
• Start the engine. Raise the excava-
tor’s bucket several inches off the
ground. Then turn the upper structure
45° and back.
got to
grease
the swing
bearings,
too.
Hey!
Over
here!
We need
lube…
PRONTO!
I keep
crud out
of the
tank!
put me
back!
put me
back!!
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