I have a Bobcat 753 with a non-functional parking brake. This bobcat came with the property I bought so I dont know how long ago the brake last worked. The bobcat will roll, drive etc no matter which position the brake pedal is in. I'm wondering how to figure out what is causing it to fail to engage. I see it has a button/solenoid type of thing that is depressed when the pedal is in the fully up position. Is that what engages the actual brake or is there more to it?