Dust shield and exhaust shields - MOT

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Dust shield and exhaust shields - MOT

Post by harrythehamster on Thu Apr 16, 2015 6:56 pm

Just doing some pre MOT checks - dust shields on both front brakes are fooked. One is split and looks pretty dangerous - like it could get snarled up the brakes. As I understand it these are not testable items so I'm planning to just bash them off - any thoughts?

Also exhaust heat shield is for the most part missing - I have no plans for this as I believe this also is not a testable item.
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Re: Dust shield and exhaust shields - MOT

Post by ElwoodLivesey on Fri Apr 17, 2015 7:36 pm

Don't dick about with brakes. I'm no fan of failing MOT's and I love a bit of living on the edge but I like to stop living on the edge when I brake.
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Re: Dust shield and exhaust shields - MOT

Post by harrythehamster on Fri Apr 17, 2015 9:30 pm

Er...its not dicking about, its removing the dust cover which is not an active part of the braking system, it will knock off easily with a hammer.

As I understand it is not a testable item, if it was I would replace - the way MOT regs have been going I want to check if anyone has any experience of this. The intent of the dust cover is supposed to be to prevent unwanted debris getting stuck between the pads and discs. As they only cover half of the mech anyway many people think this is a waste of time and also could cause as many jams as it prevents with things getting stuck in the guard.

If I leave it on it could drop rusty metal into my brakes which will then have a good chance of dicking about with the brakes. If I bash it off and file down any edges I don't even have to remove any bolts. When I say bash I don't mean blindly flinging a sledgehammer, I mean careful tapping - the rust is so bad it will not take much to do.

Thanks for the advice - brakes are of course very important and nobody should 'dick about' with brakes.
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Re: Dust shield and exhaust shields - MOT

Post by ElwoodLivesey on Fri Apr 17, 2015 9:33 pm

Rag week?
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Re: Dust shield and exhaust shields - MOT

Post by harrythehamster on Fri Apr 17, 2015 10:04 pm

Yes
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Re: Dust shield and exhaust shields - MOT

Post by ElwoodLivesey on Fri Apr 17, 2015 10:12 pm

If they're coming off anyway then take them off, they'll fail it either way if it's a problem, but they're to stop grit and stones getting onto your pads, I don't know how well they work but they must put them on for a reason.
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Re: Dust shield and exhaust shields - MOT

Post by ElwoodLivesey on Fri Apr 17, 2015 10:13 pm

If it doesn't draw their attention then it's a good thing.
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Re: Dust shield and exhaust shields - MOT

Post by Swarfing on Fri Apr 17, 2015 11:34 pm

If things are as rusty as you say then the brakes will fail on that alone. Basic rule is mechanical items must be in reasonable and serviceable order to adequately do the job it is intended to do (without endangering the public).

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Re: Dust shield and exhaust shields - MOT

Post by harrythehamster on Sat Apr 18, 2015 12:39 am

They aren't a mechanical item - they don't move.

ElwoodLivesey wrote:If they're coming off anyway then take them off, they'll fail it either way if it's a problem, but they're to stop grit and stones getting onto your pads, I don't know how well they work but they must put them on for a reason.

Thanks for the input of common sense - I'm going with that. If they're required the ones on are useless, one is split - I reckon it has had something caught in it.

There's a good disc - ussion here:
http://forums.autosport.com/topic/156979-disc-brake-shields
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Re: Dust shield and exhaust shields - MOT

Post by harrythehamster on Sat Apr 18, 2015 12:42 am

Mind, I see a lot of sites saying they're for stopping the brake pad dust getting all over your wheels and spoiling them...I've no use for that either.
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MOT pass!

Post by harrythehamster on Mon May 11, 2015 11:11 pm

Peeled off the dust shields and gently hammered flat any sharp edges. Fitted new pads and discs.
MOT pass.
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Re: Dust shield and exhaust shields - MOT

Post by harrythehamster on Mon May 11, 2015 11:12 pm

Very Happy
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Re: Dust shield and exhaust shields - MOT

Post by Swarfing on Mon May 11, 2015 11:51 pm

Nice one

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