Join Date: Mar 2019
Location: Dallas/Fort Worth
Rear brake issue - locked up after first ride
Thanks in advance for the sleuthing on this. On my first ride after purchasing, the rear brakes went away after i used a couple times. Got home and realized the rear caliper was destroyed, with the pistons coming out of the bores and grinding away at the disk. I picked up a used caliper, cleaned her up and polished up the pistons, installing a nice used disk and a set of HHH sintered pads. Bled the rear braking system before my second ride today.
Rode about 5 miles, breaking in the rear pads. They felt great. However, I felt the bike laboring when I was about 1/4 mile from the house, so I slowed to a stop. The rear brake caliper was clamped down hard, the rear brake pedal almost in a locked (down) position. I was able to release a little tension on the rear caliper/disk and limped home.
What's odd is when I let the bike sit for 15 minutes, the rear brake pedal begin operating like it should, and the rear caliper is no longer clamped down on the disk.
Could the rear master cylinder be the culprit? Do I need to rebuild it? What you you guys recommend? Thanks much.
2000 ZX12R (A1) with 14k (Candy Persimmon Red)
Last edited by 71Rcode; 04-07-2019 at 11:28 AM.