Excavator maintenance precautions

1) When performing maintenance work, hang the “No operation” warning sign on the joystick. If necessary, hang warning signs around the machine.

2) Only use suitable tools. Damage, inferiority or substitute tools can cause personal injury.

3) Keep the machine clean and tidy. Leaking hydraulic oil, lubricating oil, butter, tools and debris can cause accidents. Therefore, keep the machine clean and tidy. If water enters the electrical system, Make the machine unable to start or work, therefore, do not wash the sensor, connector or cab inside with water.

4) Before the inspection and maintenance, the engine should be turned off. If the engine must be started, the safety lock lever should be placed in the locked position, and the maintenance work should be completed by two people, one person should be repaired and the other person should sit on the driver seat so that Shut down the engine immediately if necessary. Maintenance personnel should be especially careful not to get caught in or caught in moving excavator spare parts.

5) Diesel, hydraulic oil and lubricating oil should be added in a well-ventilated place. The spilled oil should be removed immediately, and the fuel cap should be tightened to prevent parts or machines from being cleaned with diesel.

6) When jacking up the machine to check the bottom, the angle of the boom and the stick should be maintained at 90~110°, then lower the bucket, so that the bottom surface supports the machine downwards, and then support the machine with a safety bracket.

7) Under normal circumstances, there is a high pressure inside each hydraulic oil pipe. Do not add oil, drain oil or perform maintenance or overhaul before releasing internal pressure.

8) When the machine is stopped, the engine coolant and the oil in each component and pipeline are still in high temperature and high temperature. Therefore, it is necessary to wait for the temperature to decrease before performing maintenance and maintenance.

9) Care should be taken when adjusting the tightness of the track. There is high-pressure grease in the tension cylinder. If the screw plug and the grease nozzle are loose, the high-pressure grease will be sprayed out, causing damage or personal injury. Therefore, turn the loose oil plug in the counterclockwise direction. It must not exceed one mile. It is forbidden to face the oil, screw or grease mouth on the face, hands, feet or other original komatsu spare parts of the body.

10) When checking diesel, lubricating oil, hydraulic oil, coolant or battery electrolyte at night, use explosion-proof lamps, otherwise there is a danger of explosion.

11) When repairing the electrical system or performing welding work, the negative (one) terminal of the battery should be removed to cut off the current.

12) It is forbidden to dump lubricating oil, diesel oil, coolant, hydraulic oil and solvent on the sewer, river or ground. It is forbidden to throw out filter elements, batteries or other harmful substances. Hazardous substances should be stored in containers and handled in accordance with relevant regulations.

13) Critical parts should be replaced regularly, such as fuel pipes, return hoses and fuel pipe caps in fuel systems, and high-pressure hoses in hydraulic systems. These hydraulic excavator spare parts should be replaced with new ones, whether they have failed or not. Rubber hoses Contains combustible materials. If the tube ages, fatigues or scratches, it will burst under high pressure, so it should be replaced regularly.

14) If you need to add water to the tank, turn off the engine and allow the engine and radiator to cool down. Before removing the lid, slowly loosen the lid to relieve pressure.

15) All maintenance work equipment should be lowered to the ground or the lowest position before maintenance and overhaul under the machine. Be sure to use a wedge to secure the track of the machine.

16) When a fire occurs, the key switch should be turned to the stop position to turn off the engine. Use a fire extinguisher to extinguish the fire and immediately notify the firefighters.

17) Short circuit of electrical system is very easy to cause fire. Always clean and tighten all electrical connecting parts. Check whether the cable or wire is loose, kinky, hard or frayed before work, and check if the terminal cover is lost or Damage, and make up for new ones in time. For cables and wires that cannot be used, they should be replaced in time. The blown fuses must be replaced with fuses of the same capacity, but not with fuses with increased capacity. Copper wire replacement.

18) Keep away from rotating parts, taking care not to let anything get involved.

19) Before starting to operate the machine, thoroughly inspect the belt straps, buckles and installed components. If any one part is worn or damaged, it should be replaced before operation. When the machine is working, the operator must always sit and Firmly fasten the seat belt.

20) Attachments such as buckets, hammers or dozer blades that are removed from the machine should be placed in a place where they do not fall over. Keep children and other people away from the storage area. https://jnjmzm.wixsite.com/sdjygcjx