Those trucks that have air lines to the outside of the wheels. What is that air system called and how does it work? For instance Swamp Loggers is on the Destination channel right now, trucks with that air pressure system.
Well the common term is Centralized Tire Inflation. How it is implemented depends on which vehicle it is installed on. Most operate in the same way just using some different parts. The one I've seen the most uses an axle with a hole through the center, the airline comes off the onboard compressor and down to the tank, then out lines to each corner. At the axles there is a rotary seal system (like you see on hose reels and such but better quality) that feeds air out to the end of the axle where a line carries it up to the stem. On most there are two control options, one allows you to lower or raise all connected tire pressures at the same time (to improve traction or lower the vehicle) while the other dumps air to one tire at a time (for a puncture or to adjust a low tire). Most also have preset limits for upper and lower pressures. That way you can't drop all the air and drop the tire off the bead or dump 175 psi into a tire that is designed for
90-120 psi !Adding it to a vehicle that it was an option on isn't bad, adding it to one that it was never on is MUCH, much harder.
Thanks. I always wondered how that works.
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