dickbowyer Posted April 16, 2008 Share Posted April 16, 2008 Can anyone giver some helpful advice please? Over the last 1000 miles I have developed a rotational squeak from the rear of my 7 which speeds up with the car and disappears on braking. Less than 5000 miles on the clock. No play in hubs that I can feel but must be from one hub or the other. Hubs seem to turn without any noise by hand. Any suggestions? Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
Dickie Normuss Posted April 16, 2008 Share Posted April 16, 2008 I've had this and was exactly as you describe and goes with application of the brakes. It turned out to be a sticking handbrake caliper which was keeping the pad pressed slightly against the disc. When I got back from a blat I touched the brake discs, three were barely warm, the one I thought was sticking seared the tip of my finger 😳 Might be worth checking your pads/calipers 🤔 VX HPC - Loud and proud here Watch out, whatever hits the fan will not be distributed evenly Link to comment Share on other sites More sharing options...
dickbowyer Posted April 16, 2008 Author Share Posted April 16, 2008 Thanks Ric, will give pads/calipers a once over at weekend........... Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
Julian Thompson Posted April 17, 2008 Share Posted April 17, 2008 Please check this before you use the car again. I had this exact problem last year and on inspection the rear wheel had actually come loose (never trust a tyre garage with your nuts ) - and because there was no retaining screw holding the disc to the hub the disc was rubbing on the pad and squeaking. If I had not checked it I could have lost a roadwheel Link to comment Share on other sites More sharing options...
dickbowyer Posted May 2, 2008 Author Share Posted May 2, 2008 Had a look at side I thought was troublesome and the handbrake caliper did not seem to be sticking. However When I got back from a blat today with worsening squeak, I touched the brake discs, three were barely warm, the rear one I thought was sticking was very hot so must be the problem. Am I going to need to take caliper off to check pads are not sticking or is there an easier way? Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
Dickie Normuss Posted May 2, 2008 Share Posted May 2, 2008 I put a spacer washer on the handbrake caliper to keep the pads further away from the disc in case it was that. It only gets used at MOT time so no issue. I also pulled the main pads one at a time out and pushed the piston in a little. I then put a sheet of 1/4" ply (caliper shaped) into the pads position and pumped the brake pedal. This had the effect of making the piston come out a little further than normal. Did this a couple of times each side to make sure they were travelling freely and no problems since VX HPC - Loud and proud here Watch out, whatever hits the fan will not be distributed evenly Link to comment Share on other sites More sharing options...
dickbowyer Posted May 3, 2008 Author Share Posted May 3, 2008 Cured I think. Useful info on Alcester Racing Sevens Brake Maintenance Page. Problem was not binding hand brake but was cured by judicial use of copperslip on pad guide rails and a bit of a clean. Irritating squeak has gone 😬 😬 😬 😬 😬 😬 😬 😬 😬 Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
dickbowyer Posted May 4, 2008 Author Share Posted May 4, 2008 Barstewards, the squeak is back Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
Andrew G Posted May 4, 2008 Share Posted May 4, 2008 I have the exact same thing, ok when i start off, once the brakes get warm the squeaking starts!! but then dissapears under braking! Have had the calipers and discs off twice checking everyhting from bearings to whether the disc was warped! After speaking to many people i have established that it's because the pad is dragging on the disc and have been told to either shamfer the pads or replace them to stop it. Have sort of put up with it now for the last 500 miles or so but am now thinking about changing the pads. Link to comment Share on other sites More sharing options...
dickbowyer Posted May 5, 2008 Author Share Posted May 5, 2008 Now I have had loads of practice taking pads in and out of caliper Chamfering 1/8" front and back edges of pads really has cured it now *thumbup* *thumbup* *thumbup* *thumbup* Thanks everone for advice! Not a squeak of a squeak ❗ Dick Superlight SV Duratec R400 Edited by - dickbowyer on 5 May 2008 14:03:05 Link to comment Share on other sites More sharing options...
dickbowyer Posted May 12, 2008 Author Share Posted May 12, 2008 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 It's back. Anyone have any other ideas 🤔 Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
susser Posted May 13, 2008 Share Posted May 13, 2008 I had a problem with the disc contacting the caliper mount, due to the caliper mount brackets being inaccurately positioned on the DeDion ear. here It caused a squeak/rubbing noise once the brakes were warm.(hot). Couldn't repeat the noise once I'd stopped which was a problem. To cure it I had to remove a very small amount of metal from the carrier. I tried new discs as the ones I had were not truly concentric, (insert long story here) but the new ones were worse. You can see the witness marks here. this here shows the lack of clearance. There was slightly more clearance at the other side of the carrier as shown by the absence of witness marks. There is a horror story around this when I cocked up and didn't tighten the wheel properly after my initial concentric-ising of the disc. here Edited by - susser on 13 May 2008 11:24:52 Link to comment Share on other sites More sharing options...
dickbowyer Posted May 14, 2008 Author Share Posted May 14, 2008 Thank you for the horror story . Hope all is sorted now. My clearance looks OK to me with no scoring of the brake disc circumference but will check at weekend............... Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
dickbowyer Posted May 18, 2008 Author Share Posted May 18, 2008 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 🙆🏻 Checked good clearance between disc and caliper mount. Whilst the disc does not seem to get too hot, the incessant squeak is getting me down. *mad* *mad* *mad* Fixes tried to date: Slackening hand brake cable Cleaning & Copperslipping brake pad slides Chamfering front and back edges of pads Check for no contact between disc and caliper mount Chamfering seemed to give the longest cure. Seems to be worse when hot. I suppose a sticking piston is a possibility? Should I replace pads? All further suggestions gratefully received. Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
dickbowyer Posted May 19, 2008 Author Share Posted May 19, 2008 Link to comment Share on other sites More sharing options...
dickbowyer Posted July 17, 2008 Author Share Posted July 17, 2008 Car left at Redline for first 6000 mile service who have checked caliper and disk and John thinks it is a driveshaft or hub issue. 😔 Dick Superlight SV Duratec R400 Link to comment Share on other sites More sharing options...
dickbowyer Posted July 17, 2008 Author Share Posted July 17, 2008 Phew It was the rear wheel bearing causing 15 thou play as disc rotated, not the more expensive driveshaft option. Dick Superlight SV Duratec R400 Edited by - dickbowyer on 17 Jul 2008 18:00:14 Link to comment Share on other sites More sharing options...
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