Rear brake problems
06-25-2013, 09:39 PM
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Rear brake problems I have a Y2K WS6 with 119K miles. I think the brakes have been dragging for a while. During a 2 hour drive on a curvy road I noticed a clicking noise that sounded like a rock in a tire, but it didn't go away. Upon inspection I discovered that both rear brake discs were cracked, with 2 cracks in each disc. The clicking was one of the cracks passing under the pad.
So I got new discs and pads and replaced the damaged parts. Now I need to find out what caused it. The pistons were pretty hard to get moving when pressing them back in the caliper, but went easy after about halfway in. After installing the caliper, everything turned fine. Then I started the car, turned off the TCS and ran it on the stands. All good until I applied the brakes. The pads do not retract at all. The discs locked up tight on both rears. I removed one of the brake lines from the right side caliper and aprox an ounce of fluid dripped out of the line in about 5-10 minutes. I didn't see any fluid drip from the caliper and the pads are still tight enough that the disc can't be turned.
This makes me think the problem is stuck pistons, but the devil on my shoulder keeps muttering " Not both, at the same time. There is something else causing this." So I need the group experience with these brake systems to tell what you think is going on here. I don't want to spend hundreds of dollars for parts just to find out it is something else. Knowledgeable opinions appreciated. Thanks
So I got new discs and pads and replaced the damaged parts. Now I need to find out what caused it. The pistons were pretty hard to get moving when pressing them back in the caliper, but went easy after about halfway in. After installing the caliper, everything turned fine. Then I started the car, turned off the TCS and ran it on the stands. All good until I applied the brakes. The pads do not retract at all. The discs locked up tight on both rears. I removed one of the brake lines from the right side caliper and aprox an ounce of fluid dripped out of the line in about 5-10 minutes. I didn't see any fluid drip from the caliper and the pads are still tight enough that the disc can't be turned.
This makes me think the problem is stuck pistons, but the devil on my shoulder keeps muttering " Not both, at the same time. There is something else causing this." So I need the group experience with these brake systems to tell what you think is going on here. I don't want to spend hundreds of dollars for parts just to find out it is something else. Knowledgeable opinions appreciated. Thanks
06-26-2013, 06:54 PM
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Yeah, the right rear anyway. I could get that side to move with difficulty after draining some fluid. The driver side is not going to turn period. I am going to pop the pistons out and rebuild the calipers. The new seals should be in tomorrow, so hopefully that will free them up.