TOMsGPTurbo Posted August 25, 2011 Report Posted August 25, 2011 Hey guys, My Holden Astra 1.8 TS 2004 has one rear brake squeaking, it first started last week when I was just driving along and it was random and now it's becoming an ongoing sound! It only dissappears when I hit the brake pedal, so I thought yep pads are on the way out, but looking at them, they have heaps of meat left on them... any ideas? Running Bendix Ultimate DB1424 fronts and Bendix Ultra Premium pads DB1511 Photos: P1580857 & P1580858 Front right P1580859 - Front left P1580862 - Rear right <-- I think it's this one P158065 - Rear left Quote
Evan G Posted August 25, 2011 Report Posted August 25, 2011 have you tried blasting them with the pressure washer? Quote
TOMsGPTurbo Posted August 25, 2011 Author Report Posted August 25, 2011 Nope! but I will try that tomorrow morning, you reckon a rock or something could be stuck in there? Quote
rian Posted August 25, 2011 Report Posted August 25, 2011 (edited) I'm fairly sure the squeal is due to vibration of the brake pad. I guess there are lots of things that could cause it to vibrate like a rough surface on the disc or a worn bush in your suspension or something. You could try that stuff from Repco and Supercheap called 'disc brake quiet' that goes on the back of your brake pads to stop the vibration, I've never used it so I don't know how well it works but it may be worth a try. Edit: This is the stuff - http://www.crcind.com.au/disc-brake-quiet Edited August 25, 2011 by rianwest Quote
Evan G Posted August 25, 2011 Report Posted August 25, 2011 on the last pic its looks like the disc is slightly glazed on the inside edge? Quote
TOMsGPTurbo Posted August 25, 2011 Author Report Posted August 25, 2011 It's pretty random, sounds like metal on metal like the caliper is catching sometimes... but that doesn't make any sense, another thing I noted is that when I pull hand brake the noise goes away also the hand brake is a lot looser then normal .... I wonder if MIDAS does that 'free' brake inspection hehe :P Quote
TOMsGPTurbo Posted August 25, 2011 Author Report Posted August 25, 2011 (edited) on the last pic its looks like the disc is slightly glazed on the inside edge? I think it could be that brake that's causing the sound too... how do I stop glazing?... stuck caliper? EDIT: Thanks Rian, if all fails I'll pull apart the caliper clean her out and put that stuff on. Edited August 25, 2011 by TOMsGPTurbo Quote
Evan G Posted August 25, 2011 Report Posted August 25, 2011 have a look on the otherside, see if its slightly glazed aswell. does your handbrake work off the caliper or is it a drumbrake inside the disc brake? Quote
TOMsGPTurbo Posted August 25, 2011 Author Report Posted August 25, 2011 No idea? I know OPEL at the end of the ASTRA production basically chucked bits of anything lying around to make complete cars, IE: my Astra has a AH (latest model) engine, apparently they did this with brakes too.. I found this: http://www.opelaus.com/forums/showthread.php?10793-TS-Astra-Handbrake-Adjustment ... Quote
altezzaclub Posted August 25, 2011 Report Posted August 25, 2011 Opel have lots of brake problems... poor engineering choice of metals it seems. Take the pads out and give them a sand on some 120grit paper just to clean the surface up. Check for stones and grit while you're in there, (around the backing plate too) and put some Discbrake Quiet on the back of them when you put them back in. Quote
ke70dave Posted August 26, 2011 Report Posted August 26, 2011 there should be what is called an "antisqueel" shim type thing on each pad, which is just a peice of metal that sits between the pad and the caliper. if you don't have it you can just get some spray on stuff, i think its just called "anti brake squeel" (what altezza is on about), spray it on the back of the pad. both options aim to act as a damper to stop the vibration that causes that squeel. Quote
19914afc Posted August 26, 2011 Report Posted August 26, 2011 The genuine pads probably would have had metal sequel plates but most people don't keep them when replacing with aftermarket pads. Don't need to sand the pads just rough up the pad surface on some smooth cement, just lightly press on the pad in a figure 8 and that will scuff up the pad surface enough, doesn't need much, then if you really want get the rotors machined if they are within the minimum thickness. Quote
TOMsGPTurbo Posted August 27, 2011 Author Report Posted August 27, 2011 Thanks guys, I'll have a crack it today and see if I can find the issue :) Quote
TOMsGPTurbo Posted August 27, 2011 Author Report Posted August 27, 2011 (edited) Astra 1 - Tom - 0 :| At the risk of breaking my tools I couldn't get the calipers off, I released the pressure on the pads by adjusting some bolts put it all back together and went for a drive and no sound, however not sure if it was because the conditions are wet??? I did do 3 test stops and drove 50m's with the pressure on the brakes to warm them up, no sounds... yet... Edited August 27, 2011 by TOMsGPTurbo Quote
TOMsGPTurbo Posted August 28, 2011 Author Report Posted August 28, 2011 So it happens I pulled the wrong wheel off and attempted to fix a brake that was fine.... :blush: I went for a drive today, noise way worse, sounds like metal on metal all the time the wheel is spinning, I'm over it taking car to mechanic tomorrow morning. >| Question what is that Metal clip thing touching the rotor? (What ever it is, I bent it back to see if it was the culpret but it wasn't) I wish I had my Corolla running :rolls: Quote
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