What is the correct position for the tandem slide release handle?

The correct position for the tandem slide release handle being all the way in and in a locked position is essential for ensuring the safe operation of the vehicle. When the handle is in this position, it secures the tandem axle slider, preventing it from moving during travel. This stability is crucial for maintaining proper weight distribution and handling characteristics of the truck, especially when it is loaded.

If the tandem slide release handle were in any other position, such as partially out or completely out, there would be a risk of the axles shifting unintentionally. This could lead to undue wear on the tires and suspension, and could even cause a loss of control while driving. Similarly, the requirement of the handle being locked means that it is not only in the proper position but also secured, which is a critical safety factor. A setup where the handle can be in any position as long as keeper pins are in place would not provide the necessary assurance that the axles are secure and properly locked during operation. Therefore, having the handle all the way in and locked is the safest and appropriate configuration for the vehicle's tandem axles.