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Front caliper dust seal blown up like a balloon-why?
Posted by weston (more from weston) on Thu, 25 Mar 2010 12:14:43
Hi all, after getting my 94 aero back from a clutch job, noticed the brakes not as good as usual. Front pads were half worn so thought it a great chance to put on ceramic pads, which I love after using them on another Saab.
After pushing in piston with C-clamp, noticed the dust seal was all bulged out-about pencil size. I managed to get things back together, but why is the seal all bloated? is it from fluid? Did I bulge it out retracting the piston? The piston obviously retracted, so it can't be seized. Maybe I can pry open seal to relieve fluid? Anyone ever seen this?
I think the mechanic removed calipers-don't know why he would do that for a clutch job, especially the passenger side caliper?!! Maybe air was introduced? I wouldn't have thought the dust seal could seal so well, either.
Weston

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