What should be checked about the tandem release arm during the inspection?

The tandem release arm plays a crucial role in the stability and functionality of a truck's axle configuration. During a pre-trip inspection, it is essential to ensure that the tandem release arm is locked in place and secured. When the arm is properly locked, it ensures that the axles remain in the correct position, providing the driver with optimal handling and safety on the road.

Having the tandem release arm locked in place prevents any unintended movement of the axles that could lead to handling issues, tire wear, or even potential accidents. This is especially critical for vehicles that need to haul heavy loads, as the distribution of weight across the axles is vital for stability.

In contrast, if the arm were easily movable or not secured, as would be implied by the other options, it could lead to significant dangers during operation. A tandem release arm that is not properly locked can result in axle slippage, which can affect the alignment of the truck and compromise safety. Hence, checking that the tandem release arm is locked and secured is vital for ensuring the vehicle’s safety and performance.