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3-3. Hydraulic system
(1) Safety precautions
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Hydraulic oil leaking under pressure can penetrate the skin and cause infection or other injury. To
prevent personal injury, comply with as below.
-. Relieve all pressure before disconnecting hydraulic lines.
-. Before applying pressure, make sure all connections are tight and components are in good
condition.
-. Never use your hand to check for suspected leaks under pressure.
-. If injured by leaking fluid, get medical attention immediately.
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The hydraulic hoses and fittings on your tractor meet engineering specifications for the particular
function. When replacing damaged parts, use only manufacture authorized service parts.
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Care in hydraulic hose installation is a must:
-. Make sure pressure is relieved before starting installation procedure.
-. DO NOT kink or twist a hose, failure may occur. Properly route the hose.
-. Have a certified hydraulic technician install the hose.
-. Remove air from the hydraulic system after installing any hydraulic component.
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Periodically check hydraulic system for leaks or damaged parts - kinked, crushed, flattened, hard
blistered, heat cracked, charred, twisted, soft or loose covered hoses and fittings.
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DO NOT pull or apply external forces to the hose. The hose may fail and cause injury.
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Keep all persons away from the working area. If a hose fails, mechanisms controlled by fluid power
can become hazardous. Lifted mechanisms can fall to the ground, steering system may fail, etc.
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Stay clear of a pressurized hose assembly that has blown apart. Hose fittings can be thrown off at
high speed and a loose hose can whip around with great force.
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Hydraulic oil can reach high temperatures. Allow fluid to cool before servicing the system.
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Vibration can reduce hose service life. Make sure all retaining clamps and/or devices are secured.
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Environmental conditions can cause hose and fittings to deteriorate. Inspect hydraulic hoses
periodically. Replace worn or damaged hoses and fittings.
Warning
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Before removing hydraulic pipes or hoses and other parts, make sure to check that
hydraulic pressure is relieved completely. The leaks of pressurized oil can cause a
fatal physical injury.
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Use proper protection equipments, before servicing hydraulic system.
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Before connecting or disconnecting the hydraulic quick coupler, lower the
implements to the ground, and check that hydraulic pressure is relieved.
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Before checking or repairing the hydraulic system, make sure the engine is stopped, and all the
transmission gears are in neutral, and lower the implements to the ground.
