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3-5. Hydraulic system
(1) Safety precautions
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.
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.
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.
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.
DO NOT pull or apply external forces to the hose. The hose may fail and cause injury.
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.
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.
Hydraulic oil can reach high temperatures. Allow fluid to cool before servicing the system.
Vibration can reduce hose service life. Make sure all retaining clamps and/or devices are secured.
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.
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.