What should be confirmed about the fifth wheel before attempting to stabilize?

Before attempting to stabilize a fifth wheel, it is essential to confirm the proper operation of the landing gear. The landing gear is responsible for supporting the fifth wheel when it is detached from the towing vehicle, and ensuring it functions correctly is critical for safe stabilization. Flawed landing gear could lead to instability, increasing the risk of tipping or collapsing while setting up. This confirmation ensures that the fifth wheel is secure and adequately supported, which is fundamental for safety during the stabilization process.

Other factors, while important in their own right, do not specifically pertain to the initial stabilization process. For example, weight capacity is vital for overall towing safety, while brake function is crucial for safe movement and control while in transit. The condition of the tires matters for road safety and handling when the fifth wheel is moving. However, at the stage of stabilization, the immediate priority is ensuring the landing gear operates correctly to provide a stable base.