My driver's seat keeps sinking down

Your leak is worse than mine was. If I can't find an air leak, I get one of my kids to listen for the leak and they usually can find it. If they can't I break out the soapy water and a spray bottle.

 

Is it not in your book on how to be a driver?

 

You book is out dated then... You should stop posting stupid threads on here untill you buy and read the updated version ....cover to cover

 

correct
My point was that if he is losing air pressure in the seat while driving under normal conditions then he should be losing it while braking or any other major air loss outside the cabin
If the air system can replenish the much larger braking amount then it most certainly should keep up with the little old seat

 

This was painful to read. Soapy water on all seat components, find your leak, fix your leak.

The seat does not have a regulator or something to maintain a certain pressure. All it is a switch that adds or dumps air. You would have to be constantly trying to add air for the rest of the system to even care.