Operating a used Cat excavator requires certain skills and operating guidelines. It is definitely not an operation that can be done directly. The following is a comprehensive guide to help you operate a used excavator effectively:

Safety inspection and preparation:
Before operation, conduct a comprehensive safety inspection, including inspection of the hydraulic system, mechanical components, lubrication system and electrical system.
Make sure that all safety devices and alarm systems are working properly.
Check and ensure that the hydraulic oil and fuel are sufficient and meet the manufacturer's

recommendations.

Starting and warming up:
Before starting the excavator, make sure it is on a stable ground and there are no obstacles around.
Start the engine according to the steps in the operator's manual and let it warm up for a while to ensure that the lubricating oil and hydraulic oil reach the appropriate temperature.

Operational technology:
Be familiar with the functions and operation of the console and operating levers. The control levers of the excavator usually include throttle, bucket control, arm and wing arm control, and rotation control.
Use smooth movements to control the various parts of the excavator, avoid sudden movements or too fast operations to ensure safety and precision.

Digging and loading operations:
Always maintain the stability of the machine during digging and loading. Ensure that the arm is in a reasonable position during operation to avoid overload or unnecessary stress.
Adjust the excavator's arm, bucket and wing arm as needed to adapt to digging tasks at different depths and angles.

Daily maintenance and care:
Clean the exterior and interior of the machine regularly, especially the radiator and air filter.
Regularly replace and maintain hydraulic oil, fuel and lubricating oil to ensure smooth operation of the machine.
Regularly check and adjust the pressure of the crawler or tire, and check the status of the hydraulic lines and joints.

Emergency measures and safety precautions:
Be familiar with the emergency shutdown procedures of the excavator and the use of safety equipment.
Follow safe operating procedures during operation, including wearing safety helmets, safety shoes and other necessary protective equipment.

Training and certification:
Participate in relevant excavator operation training courses and obtain operation certificates and certifications to ensure that you have the necessary operating skills and knowledge. By following these operating guidelines and suggestions, you can effectively operate a used cat 320, improve work efficiency and ensure safe operation. Regular maintenance and care will extend the service life of the excavator and reduce unnecessary failures and repair costs.