Objective:
To know the hazards that could occur from working with hydraulic equipment and how to prevent them.
Background:
Hydraulic fluid is dangerous. Fluid can escape when adjusting or removing equipment. Fluid can
be trapped in the hydraulic system even when the engine and hydraulic pump are stopped. Trapped
fluid can be pressurized in excess of 2,000 psi (13,790 kPa). Pressurized fluid can penetrate the skin,
requiring prompt surgical removal. If not properly cared for, gangrene may result. Penetration
injuries may not appear serious, but the injected body part is usually lost if medical attention is
not promptly sought.
Tighten all connectors before applying pressure. Keep hands and body away from pinholes and nozzles
that eject fluid under high pressure. Use a piece of cardboard or paper to search for leaks. Relieve
pressure before disconnecting a hydraulic line.
Do not cross hydraulic lines. If the lines are not coupled correctly, the implement will not rise and
drop as expected. Tape or colour code lines to prevent an accident.
A disconnected implement, in the raised position, has trapped hydraulic fluid that might be
pressurized. Heat causes thermal expansion of the fluid, increasing the pressure. Always relieve
hydraulic pressure before loosening hydraulic fittings. Injury can result from the hot, high pressure
spray of the hydraulic fluid.
AGRICULTURAL SAFETY TOPICS
HYdRAULIC SYSTEmS
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