Hadley Air Horn
I need to remove and clean my Hadley air horn solenoid or replace it. Everything I have read says you have to drain the air tank first. Perhaps a dumb question, but how to you first drain the air tank...
Forum Discussion
The OP has a HR vacationer and I think that was only gas. On air brakes, no air tank, only the one that comes with the Hadley air horn. Unplug the pump or remove the fuse and the air won't last long.
