dozerboy

Thanks Micmac, I did strip it down already and clean everything up and all seemed fine when I put it back together.

Thanks Ruffday, will have a look at the cable and see if it's sticking.

Hi, hoping some of you wonderful experts might be able to assist me in diagnosing an issue. My NSR brake disc was heating up mid last year, so I stripped it down to find the caliper was seized etc. Bought a new caliper, pads and discs as I was needing discs anyway. Seemed ok for a number of months, but noticed the disc has been heating up again. So I stripped down the brakes yesterday, wound the piston in, pressed the brakes to push it out, wound it in again.. etc for 2 or 3 times and it seems fine... however having just returned from work the OSR is only just warm, but the NSR is roasting again. It also had an MOT advisory that the rear brakes were only just within the tolerance for brake balance. Could this be to do with a pressure valve or be ABS related? The piston seems free and as I say that caliper is less than a year old. Any advice or thoughts would be much appreciated. Many thanks, Dozerboy.

Thanks everyone, changed osr bearing and noise has gone. Next problem - reversing lights are not working, and the parking sensors only come on when I press the button.... checked the bulbs and the fuses and all ok - could this be the reverse switch on the gearbox?

tHANKS, but I just fitted new rears a couple of weeks ago and the noise was still the same after fitting the new ones.

i just changed the nsr wheel bearing this evening to discover that the noise is still there. so its either the osr bearing or god knows what. Really dont want it seizing on me. going to put the one i took off tonight onto the other side just to try it and see if the noise stops. if so i will buy another new one.

Sorry, I don't follow what you mean? I know what swmbo means though

Really appreciate all your thoughts and experiences. Bearings don't seem that cheap, so it's a bit of a gamble buying one and replacing it without knowing for sure that is the issue, but I'm at the stage now that I think I'm going to have to. It's not the tyres, nor the tracking, It's not engine / gearbox / diff related as the noise is road speed dependant, not engine speed dependant.... I think it's coming from the rear but very hard to say for sure..... aaahhh cars......

Thanks. I'm beginning to think that it must be the bearing, as I can't think what else it could be. It's getting really loud now, and as one of my replies further up says, when taking sharp right hand bends, the noise stops briefly. This would indicate a bearing surely? And the most likely one, would be the one that was subject to excess heat due to the seized caliper?

Could the excess heat build up from the seized brake, make the bearing grease lose it's viscosity and while I can't feel any play, the bearing could still be damaged?

Well, the noise started, so I investigated and discovered the seized caliper... the edge of the disc was kinda orange with the excess heat. I got the tracking done as I had abnormal wear on the front tyres. The noise stayed the same before and after getting the tracking done. I've since put the rears on the front and replaced what was the fronts..... noise still there and getting worse. Although I discovered today a slight vibration on the handbrake lever while driving, and on sharp right hand bends the noise stops.

Thanks, but the noise at slow speeds is minimal, I don't think a brake tester would be fast enough.

OK, since last posting I had a rear blow out, so I now have 2 new rear tyres (8mm tread). But, I still have the same whining noise which is getting worse. Checked the wheel bearings again, and there is no play in any of them. But, the nsr caliper was seized for a while a few months back and thats when this noise started. Could the excessive heat build up at that time damage the bearing enough to cause this noise, but not to give any movement on the bearing? It's getting so loud now, it's doing my head in. Any thoughts be appreciated.

Thanks for your welcome!! Ok, I might put the fronts on the rear and see how we go. I do around 30000 a year, and have to get a set of tyres every year, so I tend to hang onto them as long as I can. Especially when sometimes when you buy new, they only have 7mm!! Some have 8 or 9 I believe but with my mileage they need replaced all too soon.

Thanks for your thoughts, I can't determine where the noise is coming from whether it is front or rear. It was laser aligned a few weeks ago and that's when this noise started.