SamG40 0 Posted May 11, 2009 I've just picked up some rear calipers from an A3 to put on. I was in the process of giving them a quick clean up when I remembered that the missus has an ultrasonic bath at work. Probably a really stupid question but would it hurt the piston seals if I left them in whilst I gave them a quick bath? Cheers. Quote Share this post Link to post Share on other sites
fla 9 Posted May 11, 2009 tbh not really worth doing as you'll need some serious but controlled elbow grease. Take them apart carefully and clean them up by hand. best to replace the seals anyway. Quote Share this post Link to post Share on other sites
