What needs to be removed before laying the hoist rope for the axillary single-sheave boom head?

The necessity to remove the rope guide bars before laying the hoist rope for the auxiliary single-sheave boom head is primarily due to the function these bars serve. Rope guide bars are designed to maintain the alignment of the hoist rope as it is deployed, ensuring that it runs smoothly over the sheave and does not derail. If the rope guide bars are not removed, they can obstruct the proper positioning of the hoist rope, leading to potential tangling or misoperation of the hoist system.

When preparing to lay the hoist rope, it's crucial to ensure a clear path that allows for optimal function of the equipment. Removing the rope guide bars ensures there is nothing in the way that could hinder the insertion or alignment of the hoist rope with the boom head. This step not only contributes to the efficiency of the setup process but also enhances safety by preventing possible equipment malfunctions caused by improper rope placement.

In this context, while safety latches, weight hangers, and cable guides may also be important components in the system, they do not directly impact the laying of the hoist rope in the same immediate way as rope guide bars do. Therefore, the removal of the rope guide bars is the appropriate and necessary action in this scenario.