RV parking

kcmoedoe wrote:
Air brakes work the opposite of how most people believe. Air is necessary to make them release, not set. Without air, a heavy duty spring actually sets the brakes. Even if you aired up the brakes, the odds are over a few days or weeks the air would bleed off and the brakes would set anyway. Nothing good can happen if your rig can roll away at any time. Set the brakes.

This is the way air brakes works. Start your engine, let air pressure build until air compreser spits out. Then push in air break handle valve. Put trans in drive than in reverse. basicaly rock forward and backword, easy. If not released, then block rear tires, and as another poster noted, whack inside of stuck brake rim.