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Post by Noberator on Nov 2, 2017 22:07:25 GMT 1
Advice sort please ta. I have a Customer who's 56 plate Mondeo has failed the MOT on the rear O/S rear wheel bearing. My question is to fail the MOT on this does it have to be rough when rotating the wheel or excessive roughness in the rear wheel bearing to constitute a fail? I'm aware the bearing is incoperated into the hub on the rear of Mondeos.
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Post by givusaclue on Nov 3, 2017 14:06:27 GMT 1
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,972
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Post by remmington on Nov 3, 2017 18:36:34 GMT 1
Advice sort please ta. I have a Customer who's 56 plate Mondeo has failed the MOT on the rear O/S rear wheel bearing. My question is to fail the MOT on this does it have to be rough when rotating the wheel or excessive roughness in the rear wheel bearing to constitute a fail? I'm aware the bearing is incoperated into the hub on the rear of Mondeos. If it is noisy or has excessive play. It is a fail! (So it should be!) Beware the ABS plug when changing, they tend to fall apart! I like changing wheel bearings, I see it as a sort of "life saving task". Seen enough collapsed ones in my time to put me off driving cars forever... Later Mondeos suffer with tyre noise that sound like, failing wheel bearings.
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Deleted
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Post by Deleted on Nov 3, 2017 19:05:13 GMT 1
It's a very subjective decision to be honest, the NT has to have a really good understanding of both what actually is a rough bearing and what constitutes a excessively rough bearing, which does not necessarily incorporate any free play. The reason for rejection on DVSA's database is worded incorrectly, it just says roughness in a bearing, while the actual requirement to fail it is excessive roughness, so this alone can mislead some NT's. Then you have to consider how fast should an NT rotate the wheel before making a decision? Should the NT base the decision on sound or feel? It's a very subjective decision in my understanding.
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Post by studabear on Nov 3, 2017 22:35:37 GMT 1
Method of inspection. Rotate each wheel in turn and listen for any sound indicating roughness in the bearing.
I tested a old Zafira a couple of days ago, Nearside rear sounded like a stone wheel when it was spun and it had a load of play, the offside rear had a low rumble when spun. I failed them both.
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Post by Noberator on Nov 3, 2017 23:20:06 GMT 1
Thanks for all the input. Perhaps I'm being pedantic. I was under the impression it had to be excessive roughness for a fail as the MOT failed sheet says.................. Reason(s) for failure Offside Rear wheel bearing rough when rotated (2.6.1) Advisory notice item(s) o/s/f tyre wearing unevenly on inner edge I can hear a slight noise (my hearing isn't what it was ) and to me it does feel rough but I wouldn't say it's excessive. I can't get hold of a SKF hub but managed to source a FAG hub. Booked in for a re-test next Tuesday morning. I have advised the Customer to change the tyre that was advised as well and to get the wheel alignment set up checked and check tyre pressures more frequently.
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Post by Karl on Nov 3, 2017 23:36:31 GMT 1
As I read the manual front and rear bearings worded slightly different Excessive roughness rears . Just roughness front.
To be fair reasonable straight forward to change. retaining bolts might well be tight/seized in. Ideally they should be changed to
Used to be nearly £300 for genuine. Expect you can get a factors one for less than £60
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Post by studabear on Nov 3, 2017 23:39:09 GMT 1
Aftermarket bearings usually come with new bolts on these, if the torx headed old bolts crumble they easily undo with a decent set of vice grips or self locking pliers.
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Post by Karl on Nov 3, 2017 23:40:32 GMT 1
On the subject , I generally feel for roughness , not listen
So if you can clearly hear a wheel bearing in an busy/noisy workshop
Then its past it's best for sure
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Post by Noberator on Nov 4, 2017 0:04:57 GMT 1
As I read the manual front and rear bearings worded slightly different Excessive roughness rears . Just roughness front. To be fair reasonable straight forward to change. retaining bolts might well be tight/seized in. Ideally they should be changed to Used to be nearly £300 for genuine. Expect you can get a factors one for less than £60 Not that cheap I can't. Aftermarket one (checking the make) it might be chocolate just under £70 and the FAG one a touch over a ton. I know which one I would go for.
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Post by Joepublic on Nov 4, 2017 3:06:03 GMT 1
As I read the manual front and rear bearings worded slightly different Excessive roughness rears . Just roughness front. To be fair reasonable straight forward to change. retaining bolts might well be tight/seized in. Ideally they should be changed to Used to be nearly £300 for genuine. Expect you can get a factors one for less than £60 Not that cheap I can't. Aftermarket one (checking the make) it might be chocolate just under £70 and the FAG one a touch over a ton. I know which one I would go for. GSF have a standard for £123 or premium for £204 WKD54 get 54% off those prices
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Post by Noberator on Nov 4, 2017 12:31:58 GMT 1
Not that cheap I can't. Aftermarket one (checking the make) it might be chocolate just under £70 and the FAG one a touch over a ton. I know which one I would go for. GSF have a standard for £123 or premium for £204 WKD54 get 54% off those prices Cheers Digger The saving from GSF would be wiped out with fuel costs going to collect. I've ordered a FAG one locally. Just need to find a reasonable priced tyre locally 205/55/16VR. I'm working on it.
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Post by givusaclue on Nov 4, 2017 13:19:59 GMT 1
aside from any mot requirements
if it feels rough & or has play change it, it's goosed & doesn't improve with age
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Post by Noberator on Nov 4, 2017 22:07:25 GMT 1
aside from any mot requirements Tell me about it. Oh sorry your on about the hub.
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Deleted
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Post by Deleted on Nov 5, 2017 12:23:08 GMT 1
I'm a bit unsure about gossip and OEM/pattern part wheel bearings, maybe I have just had good luck all the time or just not seen bad pattern part bearings A few years back I bought a Transit, when I was driving it the front steering felt like it was falling off the van, I eventually put it on the class 7 ramp and completed a Ford approved inspection based on their technical data sheets for the said van. I spent a bit of time servicing and repairing parts of the van that had been neglected over time and brought it back up to recommendation. The offside front wheel bearing was rough in operation, there was no element of doubt the bearing required changing but the Ford technical data really did make the job out much more difficult that it actual was, special tools etc, then when I spoke to a local garage who does the class 7 mots they told me cheap wheel bearings fail for fun and I should invest in the OEM bearing as they had previously had problems with them in their experience. I attended a tools seminar shortly afterwards and spoke to a guy there who actually worked for Ford and advised about how he struggled a full day changing a wheel bearing without the tools, this made the job seem even worse to complete, then I spoke to another guy who said he sold a bearing remover/installer for the Transits at reasonable cost . I decided to buy it, and because I had now got the right tools to do the job, I thought I'll buy a wheel bearing from Ebay, if I remember correctly, about £17 it cost. When the bearing arrived I set about fitting it, now about 3 years later and the van is used daily, the bearing operation to date is fine and no reported problems. I am thinking rightly or wrongly that it must be something to do with the methods of bashing them in/out that causes them to prematurely fail in service, rather than the make of and or price of purchase!
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