3Installation of Bucket Cylinder

3 Installation of Bucket Cylinder

Cautions

•Park the machine on a solid and level position. •Be sure to stop the engine before beginning work. •When working cooperatively with others, take great care to follow safety procedures while giving clear signals to each other. •Wear protective devices (safety glasses, safety shoes, etc.) for when working with hammers. •Be sure to inspect the nylon slings and other lifting equipment before beginning work. •Do not stand on or pass under the suspended load (bucket cylinder).

•Wrench (19 mm, 36 mm) •Bar hammer •Holding-up bar •Crane (that meets the required lifting capacity) •Nylon sling (that meets the required lifting capacity) •Grease •Rags •Cleaning fluid •Crossties

Items to prepare

[1] Remove the bucket. (For details, see "Removal and Installation of Bucket".) [2] Remove the bucket link. (For details, see "Removal and Installation of Bucket Link".) [3] Allow the tip of arm (1) to touch the ground.

[4] Turn the key switch (1) OFF to stop the engine. Then turn the key switch (1) ON again and turn the control lever (2) about 10 times to bleed out the pressure. 1

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[5] Move the travel lever (1) back and forth about 5 times to bleed out pressure. [6] Return the key switch to OFF.

[7] Press the air breather button (1) on top of the hydraulic oil tank to release the pressure inside the tank.

[8] Use 2 36-mm wrenches to remove hoses (1) and (2) while fixing the pipe. •Use caps or plugs to cover the hoses and pipes to prevent the entry of water, dust or dirt. •Clean the hoses and pipes by spraying with a parts cleaner to prevent scratches and prevent dirt from accumulating on the connectors. 1

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[9] Use a crane and nylon sling (1) to secure the bucket cylinder (2). •Wrap the nylon sling inside the pipes to prevent them from getting crushed.

[10]Use a 19-mm wrench to remove the lock bolt (1).

[11]Use the bar hammer (1) and holding-up bar (2) to push out the pin (3). •If it is difficult to pull out the pin, it is being loaded. •When pulling out the pin, take care not to damage the installed O-ring and dust seal. •When installing parts, clean the pin and pin opening of each part, and firmly rub them with grease.

[12]Lift the bucket cylinder (2). [13]Place the bucket cylinder (2) on crossties. 2 1

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