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Safety Section
Pressurized Air and Water
Pressurized air and/or water can cause debris and/or
hot water to be blown out. This could result in personal
injury.
When pressurized air and/or pressurized water is used
for cleaning, wear protective clothing, protective shoes,
and eye protection. Eye protection includes goggles or
a protective face shield.
The maximum air pressure for cleaning purposes must
be below 205 kPa (30 psi). The maximum water
pressure for cleaning purposes must be below 275 kPa
(40 psi).
Trapped Pressure
Pressure can be trapped in a hydraulic system.
Releasing trapped pressure can cause sudden
machine movement or attachment movement. Use
caution if you disconnect hydraulic lines or fittings. High
pressure oil that is released can cause a hose to whip.
High pressure oil that is released can cause oil to spray.
Fluid penetration can cause serious injury and possible
death.
Fluid Penetration
Pressure can be trapped in the hydraulic circuit long
after the engine has been stopped. The pressure can
cause hydraulic fluid or items such as pipe plugs to
escape rapidly if the pressure is not relieved correctly.
Do not remove any hydraulic components or parts until
pressure has been relieved or personal injury may
occur. Do not disassemble any hydraulic components
or parts until pressure has been relieved or personal
injury may occur. Refer to the Service Manual for any
procedures that are required to relieve the hydraulic
pressure.
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Always use a board or cardboard when you check for a
leak. Leaking fluid that is under pressure can penetrate
body tissue. Fluid penetration can cause serious injury
and possible death. A pin hole leak can cause severe
injury. If fluid is injected into your skin, you must get
treatment immediately. Seek treatment from a doctor
that is familiar with this type of injury.
Containing Fluid Spillage
Care must be taken in order to ensure that fluids are
contained during performance of inspection,
maintenance, testing, adjusting and repair of the
equipment. Prepare to collect the fluid with suitable
containers before opening any compartment or
disassembling any component that contains fluids.
Refer to Special Publication, NENG2500, "Caterpillar
Dealer Service Tool Catalog" for the following items:
• Tools that are suitable for collecting fluids and
equipment that is suitable for collecting fluids
• Tools that are suitable for containing fluids and
equipment that is suitable for containing fluids
Obey all local regulations for the disposal of liquids.
Dispose of Waste Properly
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Improperly disposing of waste can threaten the
environment. Potentially harmful fluids should be
disposed of according to local regulations.
Always use leakproof containers when you drain fluids.
Do not pour waste onto the ground, down a drain, or
into any source of water.
Crushing Prevention and
Cutting Prevention
Support the equipment properly before you perform any
work or maintenance beneath that equipment. Do not
depend on the hydraulic cylinders to hold up the
equipment. Equipment can fall if a control is moved, or if
a hydraulic line breaks.
Do not work beneath the cab of the machine unless the
cab is properly supported.
Unless you are instructed otherwise, never attempt
adjustments while the machine is moving or while the
engine is running.