What action should be taken if a draft gear has a crack greater than 1 inch?

When a draft gear exhibits a crack that is greater than 1 inch, the appropriate action is to replace it. This is because a crack of that size can significantly compromise the structural integrity of the draft gear, which is crucial for safely connecting rail cars and managing forces during their operation. A draft gear that is cracked beyond specified limits poses a risk of failure, which can lead to accidents or derailments.

In terms of safety and reliability, replacement ensures that the gear can perform effectively without the risk associated with compromised components. Repairing a crack of this magnitude may not restore the gear to its optimal condition or ensure the same level of safety, and monitoring a cracked component does not address the underlying issue, which is also a risk. Painting the draft gear does not directly relate to its structural integrity or performance and would not mitigate the dangers posed by the crack.

Thus, replacing the draft gear is the most responsible and safest course of action in accordance with standard maintenance practices in the rail industry.