carl0s Posted August 17, 2006 Share Posted August 17, 2006 Car is making a pad-scraping or bad wheel bearing noise, it's getting progressively worse. I think it's the OSR pads. They certainly need changing (again) anyway. They seem to be worn in an uneven, diagonal fasion. Is this indicative of a problem? Unusual? See below: http://www.uk2sucks.net/pads/1.JPG http://www.uk2sucks.net/pads/2.JPG thanks, Carl Link to comment Share on other sites More sharing options...
carl0s Posted August 17, 2006 Author Share Posted August 17, 2006 Since refitting the caliper, the car has been noise free. I wonder if the pad was simply caught at this funny angle. Perhaps the inside piston isn't working, meaning the angled pad wasn't being forced-straight. hmmm. New pads needed anyway. In other news, I've just been to see the absolute fittest 30yr old girl *ever*. wow. Three kids. What is it with gorgeous women and children? Guys must like impregnating them. Link to comment Share on other sites More sharing options...
D8MOA Posted August 17, 2006 Share Posted August 17, 2006 looks to me like the pins have a grove in them and the pad is catchin gon this grove and not moving when the brake is pressed or there is loads of dirt making the pad jam inside the caliper Link to comment Share on other sites More sharing options...
TrickTT Posted August 18, 2006 Share Posted August 18, 2006 Good lordy, Get rid of all the brake dust and put some copperslip on there. Link to comment Share on other sites More sharing options...
Getrag Posted August 18, 2006 Share Posted August 18, 2006 I had exactly this problem last weekend! Turns out that the slider on one of the carriers had completely seized. As a result, only one slider was moving, hence only one side of the pad getting worn, giving that diagonal wear pattern. Plus, I was getting that noise too. Link to comment Share on other sites More sharing options...
Pete Posted August 18, 2006 Share Posted August 18, 2006 What is it with gorgeous women and children? Guys must like impregnating them. Nah - it's aliens. Link to comment Share on other sites More sharing options...
carl0s Posted August 18, 2006 Author Share Posted August 18, 2006 Turns out that the slider on one of the carriers had completely seized. Slider on one of the carriers? Can you explain? I don't understand and have never had a brake caliper apart before. Link to comment Share on other sites More sharing options...
Kranz Posted August 18, 2006 Share Posted August 18, 2006 Single piston calipers have a slider mechanism, but this is a twin piston and so doesn't need one as the two pistons counteract each other. It looks like the pads have worn down quite a lot, which has allowed the piston to rock slightly as it comes to the end of its travel (as there is not much piston left in the bore it will do this). The force of the braking effort on the pad has caused the piston to rock, digging the front of the pad into the disc more. Its mainly because the pads are worn so far down. new pads will fix this as the piston won't be able to rock in the bore. Cleaning all the crud off & exercising the piston in and out a couple of times (push it all the way in with the old pads on & then put the caliper back over the disc & press on the brake pedal... repeat a couple of times) will help. Not a major problem but it could be if the pads wear down so far that the piston falls out of its bore !!! Change the pads before they get this low. Link to comment Share on other sites More sharing options...
carl0s Posted August 18, 2006 Author Share Posted August 18, 2006 Awesome Thanks for your help. New pads on their way anyway. Link to comment Share on other sites More sharing options...
Ian C Posted August 18, 2006 Share Posted August 18, 2006 Not a major problem but it could be if the pads wear down so far that the piston falls out of its bore !!! Change the pads before they get this low. That's not really ever going to happen as you'd have to get through the backing plate, never mind the pad material, to achieve this -Ian Link to comment Share on other sites More sharing options...
garethr Posted August 18, 2006 Share Posted August 18, 2006 That's not really ever going to happen as you'd have to get through the backing plate, never mind the pad material, to achieve this IanI was at my local garage the other day (arranging to have new front discs / pads fitted to the GS, as it happens) and I spotted a wafer thin disc in the scrap pile... and I mean "wafer thin", like 1-2mm. It turned out to be the rear disc off a big Renault Trafic van. It had been driven for who knows how long with no pad material left. A few more miles and there would have been no pad backing left either. It was only spotted because the driver was dropping off his mate, and one of the mechanics heard the noise of metal on metal. How could anyione drive around with that noise and not think something might be amiss? Link to comment Share on other sites More sharing options...
Ian C Posted August 18, 2006 Share Posted August 18, 2006 Same way someone can install a brake pad the wrong way around on a VX220 EBC Green Stuff one as well, so it's not like the colour of pad and backing plate were confusingly similar -Ian Link to comment Share on other sites More sharing options...
Kranz Posted August 18, 2006 Share Posted August 18, 2006 Ian, you mean the friction side against the piston & the backplate against the disc??? Christ, that takes some kind of numpty LOL (but I did once wire up a fog light switch the wrong way and set fire to a car.... minor scortching only). BTW there are a cars about that can pop the pistons out if the pads wear down to metal.... Some designers are numptys too Link to comment Share on other sites More sharing options...
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