What happens when the shaft that the cable is attached to rotates ?
There has to be a self adjusting mechanism to take up the slack created by pad wear. I think it involves the ratchet mechanism in the direct piston. I also think I have an idea on how it works but not how to adjust it. I'm kinda guessing that you have to hold the direct piston while moving the cable arm full travel several times. A caliper is on my work bench so tomorrow I'm going to play with it. One way or another I'm gonna figure it out but I thought going to the brain bank here first might work. I want a functioning P- brake.