Which action should be taken first if a forklift makes an abnormal noise?

The appropriate first action to take if a forklift makes an abnormal noise is to tag it out of service. This action is crucial because an abnormal noise can indicate a mechanical issue that could compromise the safety of the operator and those nearby. By tagging the forklift out of service, you are ensuring that no one uses the equipment until it has been properly inspected and deemed safe for operation. This helps prevent potential accidents or further damage to the machine, promoting a safer work environment.

While monitoring the noise or shutting down the forklift are steps that might be considered, they do not provide the immediate safety measure that tagging out of service does. Reporting to a supervisor is an important step but should follow the immediate action of ensuring that the equipment is not in use to mitigate any risks to personnel.