If it's just the canister you're changing, it twists off and the new one twists on. I often have to use a 36" pipe wrench to twist the old one off.
No.
The air dryer blows out moisture it has collected.
most semi's have air horns so yes it is possible
The governor, purge valve, and regulatory valves to the brake chambers regulate the air pressure.
nothing most of them are under the hood
Disconnect the air lines to it, unbolt it, installation is opposite of reverse. You should be able to look at it and figure it out.
I here That the original smokey and the bandit 1973 Kenworth W900A Semi Truck is in Arkansas with weeds growing up to the air breather.
You have a primary and secondary tank. Certain air functions of the truck use the primary and others use the secondary tank.
Does not have a filter for you to change.
Semi trucks have air brakes, no hydraulics some very old trucks had air over hydraulic systems but they used no more pressure than any other system
by trains sometimes by air planes or just by those really big semi truck.. Dahh who didn't know that dumb a..
To drive a semi truck, you need a specific driving license that allows you to drive that class of vehicle. As well, as proper education and training such as driver's ed.