What is the procedure after discovering a broken knuckle instead of a drawbar?

The correct procedure after discovering a broken knuckle instead of a drawbar involves ensuring that brake pipe pressure is restored before proceeding. This is crucial because the integrity and functionality of the braking system are dependent on maintaining adequate brake pipe pressure. A broken knuckle may affect the coupling and the overall stability of the train, and any disruption in the brake system must be addressed to ensure safe operations.

Restoring the brake pipe pressure helps to ensure that the brakes on all cars are operational and can effectively respond when needed, reducing the risk of accidents or equipment failure during transit. Properly attending to the brake system in this context emphasizes the importance of safety in rail operations, highlighting that no train should proceed until the brakes are confirmed to be in good working order following any equipment failure.

Following this procedure also aligns with regulatory requirements and industry standards that prioritize safety in handling train equipment issues, ensuring that all necessary checks are made before resuming normal operations.