Rear caliper slider pin shot?

dmention7

Member
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'03.5 Blue MSP #2543
I was replacing my pads/rotors the other day, and I noticed that one of the slider pins on my rear driver side caliper seems to be messed up. The caliper opens and closes just fine, but there is some lateral play in the lower slider, such that I can wobble the caliper a bit instead of it staying perfectly parallel as it slides.

I was scrambling to get my car put back together, so I didn't inspect it too closely, figuring I'd investigate later (the old pads seemed to be wearing evenly). Does anyone know if this is something that can be fixed with a caliper overhaul kit instead of a full-on replacement? I initially assumed the sliders were sliding inside a metal housing, but some searching on this site makes me think they might just be sliding on o-rings... in which case, my problem is probably just that one of the o-rings has become damaged.

Thanks!
 
Can someone at least post a link to the thread where this has been discussed, documented, and photgraphed, and call me a lousy n00b? lol
 
That's what I'm trying to get confirmation of before I order anything... that the slider pins are sliding on some replaceable seals/o-rings, and that it's not a metal-metal situation.
 
Is there is lateral movement when the caliper is still bolted up or unbolted? I think there should be a little play when unbolted. Did you check the pin itself to see if it is loose? I'm not too sure if they can be tightened or not. If not, you may need a new caliper.
 
With the caliper bolted up to the hub, and the brakes clamped down, there is no movement I can feel. But, with the caliper off the rotor, the moving part of the caliper can be wobbled back and forth, for lack of a better description. The top slider pin has no play in it, but the lower slider pin has a good deal of play in it. I get the impression that the slider is riding on rubber seals (as opposed to a metal shaft sliding into a metal collar), but I'm not sure of that, and the pictures I'm seeing of the repair kits aren't terribly helpful either. So I guess the main question I have is, what is the anatomy of the slider pins and the holes they slide into?
 
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I'm trying to picture mine as I just did them in the fall. But I believe the slider pins slide into a metal sleeve that is sealed by the rubber o-rings/boots included in the kit. Hence, when bolted up there is no play. When unbolted, the play may be because the seal is torn or broken. Then again, I don't know how much lateral movement you're talking about here.
 
I'd have a hard time quantifying the lateral movement of the slider I'm concerned about, other than to say it's enough where I'm convinced something inside the caliper is missing and/or broken, and not just loose.
 
I guess I don't see the point in that if all I need is a $15 rebuild kit... which is what I'm trying to find out.
 
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