Brakes quetsion

[Jcook1023]

Hey all! Wondering if anyone could point me in any kind of direction. I find that my rear brakes aren’t, well, doing anything lol. I know they’re low, maybe 4mm, but they’re not engaging at all. My initial thought is to replace them, clean and lube the pins like on a car and check that the caliper pistons are doing they're job but prior to doing that are there any adjustments I should check out?

[slickster]

Put bike on center stand, rotate wheel while applying brakes, anything? Juice in reservoir?...really simple system...

[Jcook1023]

Yeah I’ve put it up on a lift I’ve got and had my son rotate the wheel while applying the brake and I’ve got nothing…the front brakes are fine though!

[indianakid]

the 83 is not that simple as the rear brake has a proportioning valve that controls the rear and front right brakes. the front brake only controls the left disk. so check that the peddle is also stopping the front wheel.