Hydraulic excavator maintenance precautions - Solutions - Huaqiang Electronic Network

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When performing maintenance on a hydraulic excavator, it is essential to follow proper safety procedures. Here are some key precautions:

Precautions for Hydraulic Excavator Maintenance on Level Ground

• Select a flat, solid, and safe ground for the overhaul.
• Place the bucket on the level ground to ensure stability.
• Turn off the generator and remove the key before starting any work.
• Ensure that the brake blocks are in good condition and secure the track properly.

Precautions for Hydraulic Excavator Maintenance at High Altitude

• Keep all tools organized and clear from the work area to prevent accidents.
• Avoid spilling oil or grease and do not leave tools scattered around. Be cautious of slipping while moving the machine.
• Use handrails and tools when climbing or standing on the excavator. Watch out for slippery surfaces.
• Never jump from heights to avoid serious injuries.
• If working with a team, agree on a common signal system to communicate effectively.
• Always follow the command structure and obey the designated supervisor's instructions.

Hydraulic Excavator Draining Oil and Replacing the Filter

Note:

• Never drain or replace filters immediately after the engine has stopped. Wait until all components have cooled down (approximately 20–40°C) to avoid burns or other hazards.
• When replacing oil or filters, inspect the old oil and filter for any metal shavings or foreign objects. If a large amount of metal debris is found, contact the factory service department for further inspection and repair.

Hydraulic Excavator Welding and Maintenance

• Turn off the power supply before beginning any welding or electrical work.
• If there are any connected electrical components, such as microcomputers, disconnect them first.
• Clean the area within 1 meter of the soldering spot to reduce the risk of fire or damage.
• Do not use more than 200V continuously during welding operations.
• Avoid placing sealing parts or bearings between the weld area and the ground to prevent overheating or damage.
• Before welding or painting, remove the existing paint and heat the area to avoid harmful gas emissions.
• Be aware that heating near hydraulic equipment or piping may produce flammable gases, which can ignite if not handled carefully.