AdzC Posted August 25, 2008 Share Posted August 25, 2008 Hi all. Just been out in the Supra and the rear offside wheel is making a horrendous squealing noise and is evidently something to do with the brakes as when stationary there is no noise. The wheel is hot touch and quite obviously rear pads are in need of replacing if not the discs too now. If my diagnosis is correct is it a simple DIY job in my garage and also any recommendations for rapid delivery of the items I may need? Quote Link to comment Share on other sites More sharing options...
AndyT Posted August 25, 2008 Share Posted August 25, 2008 (edited) Pads from CW, Envy, Whifbitz. If you've cooked 'em really badly, I'd get the caliper checked over for normal operation. http://www.mkivsupra.net/vbb/showthread.php?t=107717 Some help here bud. Edited August 25, 2008 by AndyT (see edit history) Quote Link to comment Share on other sites More sharing options...
AdzC Posted August 25, 2008 Author Share Posted August 25, 2008 Thanks Andy. PM'd those listed so just waiting for a reply. Hoping it's not going to be too much of a nightmare job as it is currently my daily driver again. Quote Link to comment Share on other sites More sharing options...
d_d Posted August 25, 2008 Share Posted August 25, 2008 does sound like you have a seized piston Quote Link to comment Share on other sites More sharing options...
AdzC Posted August 27, 2008 Author Share Posted August 27, 2008 I've stripped the rear o/s brake down this evening and I can't get the piston to go back into its housing (whether i'm doing it the right way though is another thing) I strongly suspect that it is a seized piston Is a caliper change an easy enough job for me to do. Obviously I will need a new pair of rear j-specs, is it possible to get reconditioned ones or will it have to be a new set? If anybody has any please let me know. I'll be posting in the wanted section too. Quote Link to comment Share on other sites More sharing options...
Scooter Posted August 27, 2008 Share Posted August 27, 2008 Have you tried to get the piston moving outwards? If you remove the piston side pad and then gently apply the brakes the piston should move out (careful you don't pop the piston out of the caliper). Then you can peal back the rubber seal and inspect the surface of the piston thats usually inside the caliper. It will probably have a rust line which you can try to clean off and then work the piston back in with, a g-clamp, or improvise using a block of wood and a spanner as a lever etc do this a couple of times and you may free it up again enough to use whilst waiting for a replacement. If you are confident about bleeding the brakes then you could remove the piston completely from the caliper and thoroughly clean out the bore and piston surfaces and refit/bleed..... Quote Link to comment Share on other sites More sharing options...
AdzC Posted August 27, 2008 Author Share Posted August 27, 2008 Have you tried to get the piston moving outwards? If you remove the piston side pad and then gently apply the brakes the piston should move out (careful you don't pop the piston out of the caliper). Then you can peal back the rubber seal and inspect the surface of the piston thats usually inside the caliper. It will probably have a rust line which you can try to clean off and then work the piston back in with, a g-clamp, or improvise using a block of wood and a spanner as a lever etc do this a couple of times and you may free it up again enough to use whilst waiting for a replacement. If you are confident about bleeding the brakes then you could remove the piston completely from the caliper and thoroughly clean out the bore and piston surfaces and refit/bleed..... I've not tried this as I was on my own trying to do it so was finding it a bit tricky. The piston just won't budge and from doing brakes on previous cars they have all tended to go in with some resistance. I will give it a go to use whilst waiting for a replacement, what would be best to clean inside the caliper? I've read about some refurb kits that can be obtained frpm Toyota but don't know if they do them for the j-spec brakes. Quote Link to comment Share on other sites More sharing options...
gordy07 Posted August 27, 2008 Share Posted August 27, 2008 Remember and remove the brake fluid resevoir cap before pushing piston back in(as i didnt) and fooked the seal at the master cylinder Quote Link to comment Share on other sites More sharing options...
AdzC Posted August 27, 2008 Author Share Posted August 27, 2008 Remember and remove the brake fluid resevoir cap before pushing piston back in(as i didnt) and fooked the seal at the master cylinder Thanks for the advice mate. I will make a mental note. Quote Link to comment Share on other sites More sharing options...
Scooter Posted August 27, 2008 Share Posted August 27, 2008 I will give it a go to use whilst waiting for a replacement, what would be best to clean inside the caliper? I've read about some refurb kits that can be obtained frpm Toyota but don't know if they do them for the j-spec brakes. I personally would just try using fresh brake fluid and kitchen towel or a clean soft rag etc and see if you can get the piston visibly clean this way and then clean the bore in the caliper until you get a cleanish cloth coming out. When refitting use some fresh fluid on the piston and hopefully this will restore some sort of firm but smooth movement of the piston in the caliper. With the caliper off the car the piston can be worked in and out of the caliper by using grips on the very end of it and rotating. Quote Link to comment Share on other sites More sharing options...
AdzC Posted August 27, 2008 Author Share Posted August 27, 2008 With the method above Scooter are you saying that I should take the caliper off completely and clean it up off the car? If so can the piston be moved quite easily by twisting and should I still not allow it to come out of its bore completely? Quote Link to comment Share on other sites More sharing options...
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