Disconnect battery and discharge any capacitors before
starting to work on the product. Attach a "Do Not Operate"
tag in the Operator's Compartment.
If possible, make all repairs with the machine parked on a
level, hard Surface. Block machine to prevent it from
rolling while working on or under machine.
Do not work on any machine that is supported only by lit
jacks or a hoist. Always use blocks or jack stands to
support the machine before performing any service or
Be careful when removing cover plates. Gradually back
off the last two bolts or nuts located at opposite ends of
the cover or device. Then, pry the cover loose to relieve
any spring or other pressure, before removing the last two
bolts or nuts completely.
Always use tools that are in good condition and be sure
you understand how to use them before performing any
Replace all fasteners with same part number. Do not use
a lesser quality fastener if replacements are necessary.
Repairs which require welding should be performed only
with the benefit of the appropriate reference information
and by personnel adequately trained and knowledgeable
in welding procedures. Make reference to "Techniques of
Structural Repair Course", SEGV2549. Determine type of
metal being welded and select correct welding procedure
and electrodes, rods or wire to provide a weld metal
strength equivalent at least to that of parent metal.
Do not damage wiring during removal operations.
Reinstall the wiring so it is not damaged nor will it be
damaged in operation by contacting sharp corners, or by
rubbing against some object or hot surface. Do not
connect wiring to a line containing fluid.
Be sure all protective devices including guards and shields
are properly installed and functioning correctly before
starting a repair. If a guard or shield must be removed to
perform the repair work, use extra caution. Repair any
loose or damaged fluid lines, tubes or hoses because
leaks can cause fires.
10. Always use lift arm supports to keep lift arms raised. Keep
the attachment tilted down when maintenance or repair
work is performed which requires the lift arms in the raised
11. Tighten connections to the correct torque. Make sure that
all heat shields, clamps and guards are installed correctly
to avoid excessive heat, vibration or rubbing against other
parts during operation. Shields that protect against oil
spray onto hot exhaust components in the event of a line,
tube or seal failure must be installed correctly.
12. Do not operate a machine if any rotating part is damaged
or contacts any other part during operation. Any high
speed rotating component that has been damaged or
altered should be checked for balance before reusing.
Make sure all protective devices including guards and
shields are properly installed and functioning correctly,
before starting the engine or operating the machine.
13. On track-type machines, be careful when servicing or
separating tracks. Chips can fly when removing or
installing a track pin. Wear protective glasses. Track can
unroll very quickly when separated. Keep away from front
and rear of machine. The machine can move
unexpectedly when both tracks are disengaged from the
sprockets. Block the machine to prevent it from moving.
Chips can fly also from bucket or ripper teeth or anywhere
a pin is being removed or installed.
Caution should be used to avoid breathing dust that may be
generated when handling components containing asbestos
fibers. If this dust is inhaled, it can be hazardous to your
heath. Components in Caterpillar products that may contain
asbestos fibers are brake pads, brake band and lining
assemblies, clutch plates and some gaskets. The asbestos
used in these components is usually bound in a resin or sealed
in some way. Normal handling is not hazardous as long as
airborne dust which contains asbestos is not generated.
If dust which can contain asbestos is present, there are several
common sense guidelines that should be followed:
Never use compressed air for cleaning.
Avoid brushing or grinding of asbestos containing
For clean up, use wet methods or a vacuum equipped with
a high efficiency particulate air (HEPA) filter.
Use exhaust ventilation on permanent machining jobs.
Wear an approved respirator if there is no other way to
control the dust.
Comply with applicable rules and regulations for the work
place (for example in the U.S.A., OSHA requirements as
set forth in 29 CFR 1910.1001).
Follow environmental rules and regulations for disposal of
Avoid areas where asbestos particles may be in the air.