The empty casing on the horizontal slide position is for horizontal cylinder repairs. A dead pin must be put in place to stop the deck from moving when the cylinder is not on the operating deck.
The hi-mount product line is the only equipment in which the Teflon disc is not available from the factory. The stinger equipment can accept a Teflon disc when a long king pin is ordered on the initial build.
The center of the 5th Wheel needs to be located in the center of the Rear Axle in order for the rear of the tractor to clear the bulkhead of the trailer when making a turn. Below is a diagram showing the requirements to pull our high mount trailers.