Kendo11 Posted October 1, 2014 Share Posted October 1, 2014 Evening all, I keep getting a loud-ish knocking noise every time I go over a manhole or pothole, and also every time I depress the brakes at low speeds. It's from both front brakes at random times, it's definitely the brakes I'm just unsure of which part. Both calipers have been off and replaced more than once in recent months, and I have also replaced the discs for drilled/grooved ones. Pads are stock. Before I go spanking money on bits I don't need - and I know this is asking for a vague answer - but which part is most likely the culprit? I was thinking it might be due to running stock pads with aftermarket discs, maybe the compound or something, or could be the little pad location wires or the pins? Thanks in advance for advice. Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted October 1, 2014 Share Posted October 1, 2014 Check all the bolts are done up properly and that nothing is missing. Sounds like the spring clips aren't in causing the pads to move around. Could also be that the discs aren't fitted properly or that they've warped. What make are they? Quote Link to comment Share on other sites More sharing options...
Kendo11 Posted October 1, 2014 Author Share Posted October 1, 2014 Mintex discs, in car life terms still very new. I will go for springs first, that's the first thing that came to mind. Found the part numbers in another thread; frt cal pins-#47715-24010 [NA] Quote Link to comment Share on other sites More sharing options...
rider Posted October 1, 2014 Share Posted October 1, 2014 Evening all, I keep getting a loud-ish knocking noise every time I go over a manhole or pothole, and also every time I depress the brakes at low speeds. Thanks in advance for advice. I had the same thing bug me for years. Got so fed up with it in the end I had all the shocks replaced figuring it might just be a sticking strut and it gave me the excuse to change out the original ones for new OE ones. It wasn't, the knocking carried on as before. I had also checked the calipers for sticking, not that either. In the end it was fixed by changing the front discs and pads. Went for £100 discs and £100 pads, not the most expensive combination available but not the cheapest either. I suspect it was excessive play on the former stock pads causing the knocking. Quote Link to comment Share on other sites More sharing options...
Kendo11 Posted October 1, 2014 Author Share Posted October 1, 2014 Thanks bud, will get some pins for now and go from there Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 2, 2014 Share Posted October 2, 2014 When you go over a road surface that causes knock just brush the brake pedal to cause the pads to barely drag on the discs. If the knock immediately stops ther pads are flopping around in the calipers. You may be missing the litle anti rattle clips, or the pin bridge clips if they are UK spec brakes. Personally I like the pads to be free in the calipers to float about a bit and live with the odd knock, but check the presence of all the clips if it bugs you. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted October 2, 2014 Share Posted October 2, 2014 Simular thing I have but as I don't have an engine I can't tell for sure. But with the handbrake on, if I was to example tighten a wheel nut the car would roll forward a fraction of an inch and I can hear a knock on the inside of the rear hub. Hard to explain but almost as if the shoes are locked to the hub but have a bit of play. Know what I mean? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 2, 2014 Share Posted October 2, 2014 Simular thing I have but as I don't have an engine I can't tell for sure. But with the handbrake on, if I was to example tighten a wheel nut the car would roll forward a fraction of an inch and I can hear a knock on the inside of the rear hub. Hard to explain but almost as if the shoes are locked to the hub but have a bit of play. Know what I mean? That is normal, the handbrake shoes are designed to rotate slightly with the drum cast into the rear disc. It gives it a self servo action. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted October 2, 2014 Share Posted October 2, 2014 That is normal, the handbrake shoes are designed to rotate slightly with the drum cast into the rear disc. It gives it a self servo action. Thanks Chris, I never quite new if it was normal or not. Quote Link to comment Share on other sites More sharing options...
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