mercer transportation

You must have one of those air operated clutches that are in a lot of these trucks...

 

I doubt it.

 

Take a picture and post it

 

Well first run for FedEx. First load was better then doing ups lol. Was ready well before I even showed up.

 

ill take one when i wake up this afternoon its snowing/raining out here right now

 

It could be something they put on all the trucks to hook that piece of crap black box to.

 

Pythagorean theorem is A^2+B^2=C^2
In other words, measure two sides of a right triangle, multiply each length by itself, add the answers together, the square root of your answer is the length of the third side.

Or, you could measure from the kingpin to the corner of the trailer, that's how much clearance you need from kingpin to the headache rack.

 

No I think it's a quick release valve on my steer axle lol

 

@TruckerPete1990 ... it look something similar to this?

 

Remember that is is you are on perfectly level ground. If you are turning and also have a dip in a driveway or something the truck and trailer will tilt toward each other more and more as height increases. You could crunch a headache rack or back of your cab against the top of a tall load or a van or container. Best if you have a couple inches clearance in addition to what the math says.