Caliper slider stuck, seized (can't remove)
#1
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On the rear caliper, the top slider is free (moves easily by hand) but the bottom slider is seized. I've removed the rubber boot, lubricated with generous amounts of WD-40 and PB blaster, and tapped on it w/ a screwdriver & hammer...no success. Any tricks?
I stole this pic from another website because it looks similar. One of the bolts threads in where the wrench is...and that piece is supposed to slide in & out so the caliper can float.
I stole this pic from another website because it looks similar. One of the bolts threads in where the wrench is...and that piece is supposed to slide in & out so the caliper can float.
![](http://pictureposter.audiworld.com/62677/seized.jpg)
#2
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I found that when mine was stuck like that I would try and continue to unscrew it while I place a screwdriver under the bolt head and maintain pressure. It is a little slow but once you see it move spray some more WD.
#4
Super Moderator
Professional Mechanic
Professional Mechanic
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At the shop we would heat it up with a oxygen and acetylene torch. You can try to get a propane can (blue) and a plumbers tip from the hardware store
#6
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Thanks for the advice.
The good news is I got it free. Vise grips as tight as possible, beat on vise grips with hammer, add some PB blaster. Repeat. 10-15 times. I ended up getting it to spin first, then after spinning it around a few times I spun and pushed at the same time and it came out.
Cleaned up the slot it was in w/ WD40 and a small file; cleaned up the pin w/ an emory cloth. Lots of grease on the pin & in the rubber seal and it's back together w/ new pads.
The bad news is the lower slider on the other side is also stuck...and haven't had any luck w/ beating on it yet. Letting the PB Blaster do it's job overnight and will try heat if all else fails.
The good news is I got it free. Vise grips as tight as possible, beat on vise grips with hammer, add some PB blaster. Repeat. 10-15 times. I ended up getting it to spin first, then after spinning it around a few times I spun and pushed at the same time and it came out.
Cleaned up the slot it was in w/ WD40 and a small file; cleaned up the pin w/ an emory cloth. Lots of grease on the pin & in the rubber seal and it's back together w/ new pads.
The bad news is the lower slider on the other side is also stuck...and haven't had any luck w/ beating on it yet. Letting the PB Blaster do it's job overnight and will try heat if all else fails.
#7
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Got it as hot as I could w/ propane torch, still wouldn't budge. Eventually I broke the head of the slider off and now have almost nothing to grab onto with the vice grips.
I think the best advice I've heard is drill a hole in the opposite side and try to tap it out with a punch. Also Autozone has one (not in stock) for $24.99 which is by far the easiest route.
I think the best advice I've heard is drill a hole in the opposite side and try to tap it out with a punch. Also Autozone has one (not in stock) for $24.99 which is by far the easiest route.
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