@@TheCarWashSoutherner I’m amazed the shear bolt can handle all that shaking on a routine basis. I haven’t heard much from people who maintain them but I can’t imagine they last very long when every single time the HP activates the arm goes BOIOIOING.

@@TheCarWashSoutherner From what I have heard that is supposed to be a warning piezo, but I don’t buy it. Maybe a piezo to get people clear of the machine so it can sense the car correctly? I’m still not sure.