Which action is required when using an excavator as a crane?

When using an excavator as a crane, it is essential to ensure that a manufacturer's approved lifting lug is installed. This requirement is critical for safety and operational effectiveness. A manufacturer's approved lifting lug is specifically designed and tested to handle the forces and loads exerted during lifting operations, reducing the risk of failure and potential accidents.

Using an approved lifting lug assures that both the excavator and the lifting attachment can work safely together, as the lug's capacity is aligned with the specifications of the excavator. This attention to detail in equipment safety aligns with industry standards and regulations, which aim to minimize the risks associated with lifting heavy loads.

The other options do not meet the necessary safety standards and can lead to significant hazards. For instance, using any kind of lifting hook available or an unmarked lifting lug compromises load safety, as these components may not have been engineered to handle the specific requirements of lifting with an excavator. Additionally, having an operator manually hold the load in place introduces a high level of risk to personal safety, and it does not comply with safe lifting practices, emphasizing the importance of proper equipment usage.