Tuning the 5th Airborne Fifth Wheel Coupler Air Pressure Setting and Air Spring Adjustment

Expert Reply:

I would need the pin box part number off of your trailer to send you the correct instructions for your 5th Airborne coupler. I have sent instructions (see link)that apply to most 5th Airborne couplers for you.

A good starting point for pressure setting is 80-100 psi. (Do Not Exceed 120 psi). When setting air pressure you need to be on level ground and add air until the skid plate is level. If you cannot maintain a satisfactory ride, you need to reposition the the air spring or adjust the air pressure. If your pin weight is heavy you would reposition the air bag to the rear (back of trailer) and if your pin weight is light you would reposition forward (front of trailer).

expert reply by: Bob G