If poor working conditions or serious contamination of hydraulic oil deterioration occurs, such as the color black, oil foaming, please change the hydraulic oil. Replace the hydraulic oil as follows:

1) The bucket in the debris cleared away, the machine parked on a flat, open spaces, speed control lever in neutral position, parking (hand) brake is a brake status, bumper mounted on the frame fixed. Start the engine and run at idle for ten minutes, during which repeatedly carried out to enhance the boom, boom drop, forward tilt bucket after bucket and other activities. Finally, the boom lift to its highest position, the maximum position after dumping the bucket, the engine stalled.

2) The bucket joystick steering mechanism to push forward, turn the bucket forward under its own weight, the discharge of oil bucket cylinder; bit in the bucket to the boom lever operating mechanism to before pushing the boom to fall under its own weight, the discharge of the oil boom cylinders.

3) Clean the hydraulic oil tank below the oil drain port and tighten the oil drain plug open, discharge of hydraulic oil, and a container filled with pick. At the same time, unscrew the filler cap, accelerate the process of discharge of oil.

4) All of the tube open at one end, to discharge steering cylinder, hydraulic oil cooler and all kinds of tubes within the residual hydraulic oil.

5) After the end of the discharge of oil, hydraulic oil tank installed below the oil drain plug and all the open mouth of the tube.

6) Open the hydraulic oil tank filler cap, add clean hydraulic fluid to the next level meter scale.

7) In accordance with the aforementioned "regular replacement of hydraulic oil" program