Landy-Novice Posted February 21, 2013 Share Posted February 21, 2013 so my day at college begun with a woman rolling into our work shop complaining that there was a serious vibration (which would explain why she didnt bring it in straight away ) when braking. so we had a look down the nearside and was amazed at the paintwork.. lots or metal filings and small shards melted into the paint work and inner wings and left to rust making it look awful!. so removed wheel to find the caliper pi$$ing out brake fluid. then look behind the disc and was left speechless. (if its not clear, that the vented part inside the disc.) OMFG.. she has certainly had he money's worth and the pads were down to metal... on the other hand, it REALLY Mildly miffed me off that she left it so long before getting it looked at. we're talking about a 2tonne+ jeep which has a 4.7L V8 pushing it along... could of easily ended badly. imho, until you can maintain your own vehicle/ getting an issue sorted asap., you shouldn't own, let alone drive one! Quote Link to comment Share on other sites More sharing options...
elbekko Posted February 21, 2013 Share Posted February 21, 2013 Quite impressive indeed... but the internet has taught me that's way more common than you (want to) think. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted February 21, 2013 Share Posted February 21, 2013 I wonder how old the MOT was? Would be interesting to know how quickly it wore that side of the disk away. Quote Link to comment Share on other sites More sharing options...
disco_al Posted February 21, 2013 Share Posted February 21, 2013 if it even had an mot of course Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted February 21, 2013 Share Posted February 21, 2013 In my experience, this is also likely to happen with male drivers. Quote Link to comment Share on other sites More sharing options...
Aragorn Posted February 21, 2013 Share Posted February 21, 2013 I wonder how old the MOT was? Would be interesting to know how quickly it wore that side of the disk away. I suspect once its down to metal on metal it would eat thru the disk fairly quickly. Quote Link to comment Share on other sites More sharing options...
sean f Posted February 22, 2013 Share Posted February 22, 2013 Could easily have passed an MOT reasonable recently, as said once it is down to metal to metal the disc goes pretty quickly, being a 4.7 jeep means it is almost certainly an auto so brae wear tends to be higher (no engine braking). Discs and pads thickness is an MOT issue but if the discs had covers on the backs and a solid enough wheel on the front then they cannot be seen, an MOT test does not take a vehicle apart so they can only test bits they can see. I know we have several tester on here so maybe one of those could comment and correct me if needed. Quote Link to comment Share on other sites More sharing options...
zim Posted February 22, 2013 Share Posted February 22, 2013 What's the problem, theres still another 8mm of disc there, good for another 3,000 miles ! Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted February 22, 2013 Share Posted February 22, 2013 What's the problem, theres still another 8mm of disc there, good for another 3,000 miles ! You're right, check the toyota on this link to see the real service limit for disks http://www.rhel.co.uk/workshop/yota/yota.htm Quote Link to comment Share on other sites More sharing options...
sean f Posted February 22, 2013 Share Posted February 22, 2013 You're right, check the toyota on this link to see the real service limit for disks http://www.rhel.co.uk/workshop/yota/yota.htm Wow that is impressive. Other problem I have seen before was a disc breaking off from the central hub, I think it was on a Ford and I am not sure where the disc came from. Similar to the origional case it had clearly been drive for quite some time as each time the brake was applied the braking surface stopped and rubbed against the hub section, the wear showed it had been doing this for a while. The female owner hadn't even mentioned a problem, the car was in with a friend for a yearly service and MOT. When questions she admitted it had been making funny noises and pulling to one side when braking for a while but it still stopped so she just kept going. The other side of the car looked OK (we changed both discs and pads anyway of cause) so we assume the disc had a material fault of some type. Quote Link to comment Share on other sites More sharing options...
Tanuki Posted February 22, 2013 Share Posted February 22, 2013 Wow that is impressive.Other problem I have seen before was a disc breaking off from the central hub, I think it was on a Ford and I am not sure where the disc came from. Quite a common problem if one of the caliper pistons has seized: the entire force of the un-seized caliper piston is then pushing the disc to one side and after a few thousand miles [or a really heavy brake application] the disc cracks-free from the 'bell' part. Quote Link to comment Share on other sites More sharing options...
JeffR Posted February 22, 2013 Share Posted February 22, 2013 Amateurs! My adorable (she's watching me type....) wife turned a V8 into a V6 and kept on driving, ran another V8 for about 60 miles with no oil pressure (what does the red oilcan light on the dashboard mean?), but her crowning glory was driving a classic mini about 60 miles on a flat rear tire, she got home and informed me that there was an odd thumping noise from the backend, went out to have a look and there gobs of melted rubber all over the car.... Quote Link to comment Share on other sites More sharing options...
mike4444244 Posted February 22, 2013 Share Posted February 22, 2013 my wife rang me in a panic once to tell me the 'engines caught fire' light was on in her metro (it was a while ago!) the actual 'fault' she had switched the heated rear window on ROFL! Quote Link to comment Share on other sites More sharing options...
Diesel_90 Posted February 22, 2013 Share Posted February 22, 2013 The minimum pad thickness for the MOT is 1.5 mm, the thickness of a 5p. Pretty frightening stuff really. Quote Link to comment Share on other sites More sharing options...
western Posted February 22, 2013 Share Posted February 22, 2013 no MOT check for pad thickness, it can't be accurately measured with the wheels fitted. Quote Link to comment Share on other sites More sharing options...
Phil Hancock Posted February 22, 2013 Share Posted February 22, 2013 Wow that is impressive. Other problem I have seen before was a disc breaking off from the central hub, I think it was on a Ford and I am not sure where the disc came from. Similar to the origional case it had clearly been drive for quite some time as each time the brake was applied the braking surface stopped and rubbed against the hub section, the wear showed it had been doing this for a while. The female owner hadn't even mentioned a problem, the car was in with a friend for a yearly service and MOT. When questions she admitted it had been making funny noises and pulling to one side when braking for a while but it still stopped so she just kept going. The other side of the car looked OK (we changed both discs and pads anyway of cause) so we assume the disc had a material fault of some type. We had a series 2a brought in once as it was pulling severely to one side under braking, when the wheel was removed from the non working side there was a nice cast iron ring around the brake shoes and a cast iron disk attached to the hub. Quote Link to comment Share on other sites More sharing options...
elbekko Posted February 22, 2013 Share Posted February 22, 2013 If you like stuff like that, have a look over here: http://www.reddit.com/r/Justrolledintotheshop Lots of similar (and worse) stories Quote Link to comment Share on other sites More sharing options...
Diesel_90 Posted February 22, 2013 Share Posted February 22, 2013 no MOT check for pad thickness, it can't be accurately measured with the wheels fitted. It is a fail if you can see it is below 1.5mm. But it is very hard to judge when a car is fitted with steel wheels and trims or alloys that arnt very open. Quote Link to comment Share on other sites More sharing options...
western Posted February 22, 2013 Share Posted February 22, 2013 so where is that written ? I can't find it in the testers manual. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted February 22, 2013 Share Posted February 22, 2013 Page 78 of the pdf Section 3.5 Reason for rejection g. a brake lining or pad insecure or less than1.5 mm thick at any point Quote Link to comment Share on other sites More sharing options...
western Posted February 22, 2013 Share Posted February 22, 2013 Cheers, just found it. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted February 22, 2013 Share Posted February 22, 2013 No probs, 1.5mm does seem a bit on the thin side though. I'd replace them before that. Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted February 23, 2013 Share Posted February 23, 2013 Especially if you dabble off-road. Seven Sisters reduced a new set of rear pads on my 90 to the metal in two days, Slindon Safari has been known to do the same kind of thing. They're cheap and easy to replace, so there's no excuse really. Even for women. Quote Link to comment Share on other sites More sharing options...
mmgemini Posted February 23, 2013 Share Posted February 23, 2013 I've been through a set of Mintex 171 front pads on a rally. We had many a car in workshops with bonded linings on one side and rivited on the other. How about a Fiesta. Been serviced. Brought in for next service. Disc one side front. Drum the other side. Then the car coming off the transportet. Steeing wheel on the right, pedals on the left. Quote Link to comment Share on other sites More sharing options...
jason110 Posted February 23, 2013 Share Posted February 23, 2013 Then the car coming off the transportet. Steeing wheel on the right, pedals on the left. How did they get it on the transporter?! Quote Link to comment Share on other sites More sharing options...
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