How does a diesel air compressor function?

A diesel air compressor functions based on the piston and cylinder principle. The piston, which is placed inside the cylinder, moves in a circular motion. The working principle is simple: the cylinder has a rubber seal to prevent any leakage of the compressed air from inside.

What psi should a truck airlift compressor be set to?

The airlift compressor is set to a 5 psi minimum no matter what. Adding weight to the bed of your truck doesn't increase the pressure in your air bags, it forces a shape change but won't create a pressure change. Change in temperature will cause a pressure change or a change in volume density (adding air) will naturally create a delta.

How does a truck compressor work if a power source is on?

For example, you load an elephant in the back of your truck, your compressor is going to adjust accordingly to the pressure increase and again at decrease if it has a power source. Using the ignition on, power source prevents the compressor from running while the truck is off unless prompted to do so by the remote.