Landing gear

The ramps are usually bolted to the frame. If they will sit on the frame, they will sit on the ramps. I've been looking for a pic of an Rgn with a flip neck but with the neck extended to show how low the trailer sits.

With an extension gooseneck, the ramps have to be absolutely perfect. Close to the 5th wheel and almost to the same height. The gooseneck a have the big roller on the ends. If the ramps are set too far back, the roller will drop between the front of the ramps and the back of the 5th wheel. Will never have that problem with any trailer with landing gear.

 

If the landing gear feet are touching the ground before you dump airbags or pull tractor away YOU ARE LEAVING TRAILER TOO DARN HIGH.

 

Don't do that either. Too low is a problem about 10% as often as too high.

 

That's happened to me as well, but not nearly as often as TOO HIGH. Greasy bottom of trailer, before hooking, should be above the top of tractor drive tires, but below 5th wheel. If tractor backing under trailer doesn't LIFT the trailer, the trailer was dropped too high.

You can force a slightly too low trailer up onto the drive tires. It just depends on your definition "slightly too low" and how hard you want to "force" the tractor under the trailer.

We've NEVER had a driver injured trying to pick up a too low trailer. We've had numerous drivers injured trying to hook too high trailers. Most of our drivers drop/hook 6-12 trailers a day. Too high is ALWAYS done by someone new to our division, and all of their years OTR is irrelevant. They ALWAYS resist until you show them. If you watch them with no comment THEY ALWAYS drop too high, never ever watched even one drop too low, except deliberately as revenge on whoever keeps dropping too high.

As always, my comments are only about trailers on level ground, not sunken docks, or on hilly/rough surfaces.

 

This is the proper height for dropping/hooking trailer.

 

NOT 2-3 inches BELOW the tires. Are you deliberately changing what I wrote to the OPPOSITE of what I wrote or was that a typo.
Proper way is trailer bottom ABOVE the tires and BELOW the 5th wheel.