trailair pinbox

My pin weight is about the same as yours. It takes 100 - 105 psi to get to the top of the arrow decal, and this provides the best ride for my rig.

Just use the arrow decal posted on the shock. Mine loses air so I check it every time we pull out. Takes a pretty good compressor to bring it up to 75-80 p.s.i. which mine needs to level.

I have a Trailair Tri-glide . I let the air out of the air bag and marked the driver side with a white line with the jaw all the down then all the way up and the I made a mark in the middle of the stroke . When the trailer is connected to our truck I air it up to the middle line which is the middle stroke. With the three lines I can just glance at it and see if the air is adjusted correctly . Works great for us.

Does yours have the arrows on the shock absorber indicating the fill level? With the static pin weight of the 5th wheel on the hitch, you should inflate the airbag until the shock shield is at the top of the arrows. You can vary this a bit depending on your ride preference - obviously, more air pressure will make the airbag more "solid", while lower air pressure will allow it to ride softer, but you don't want it bottoming out under severe bumps you may encounter.

For our Mobile Suites, we run about 85 PSIG in the TrailAir tri-glide pinbox. The pressure yours requires will be a direct function of the pin weight of your 5th wheel. IIRC, the airbag is rated for 100 PSIG maximum inflation pressure.

Rusty

If I remember right there is an "Inflate To Here" decal on the front, you inflate it until it's at that line. I don't think there is a spec for a given PSI, but maybe someone can correct that if I'm wrong.