What should be done if a journal is overheated when setting out a defective car?

Inspecting the underside immediately is crucial when a journal is overheated while setting out a defective car because it allows for a prompt assessment of the situation. Overheating can indicate mechanical problems that could lead to more severe issues, such as wheel failure or derailment, if not addressed quickly. By conducting an immediate inspection, you can identify the extent of the damage, determine whether the car can be safely moved or needs to be isolated further, and ensure the safety of other rail operations.

Taking immediate action helps in preventing accidents and maintains the safety standards required in train operations. This prompt response is part of best practices in managing train integrity and operational safety, ensuring that necessary repairs or actions can be taken before the situation escalates.