Can someone explain to me how it works and also is the parking brake a shoe and what would happen if left on for extended period of use.. haven’t done it (yet) but have left it on for a few feet before noticing

Spent 6 hours over two days installing the $70 parking brake upgrade kit on my 4720 with cab. If I had to do it again, probably three hours. Read all instructions carefully and do every step, even the ones that seem useless. Each step has a result that makes the job easier. When they say you...