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MOT Pass today, but help needed please.

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IanMc
Hi All,

My 1995 MGF passed another MOT today, but I had some advisories that I need your help with please.


Has anyone had the same advisories, or knows what they will be referring to please?

I haven't got under the car to take a look around yet, as basically it too cold for my delicate Southern hands this evening lol :)

Thanks in advance.
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Chris T
I would check the state of all four rear subframe mounts, they are known to rot but, in this case, it may just need a wire brush, rust converter and paint.

The suspension pin or bush is somewhat vague, looking at cars annual mileage I am not sure I would worry too much about it, I wouldn’t be surprised if next year the issue isn’t picked up!
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gnu
IanMc said:
Hi All,

My 1995 MGF passed another MOT today, but I had some advisories that I need your help with please.


Has anyone had the same advisories, or knows what they will be referring to please?

I haven't got under the car to take a look around yet, as basically it too cold for my delicate Southern hands this evening lol :)

Thanks in advance.
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You‘ll have to look underneath and test the movement on bushes by jacking up and waggling the suspension/ steering. The areas to look at are described. At least you passed and have the summer to patch up the advisories!
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Roverlike
Interestingly I see no picture in first post and if I try to put only posted URL in web browser, it says Web page cannot be found.
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IanMc
Roverlike said:
Interestingly I see no picture in first post and if I try to put only posted URL in web browser, it says Web page cannot be found.
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I assume that must be down to where I have the image stored = in my Imgur photo storage account. Can you see it by viewing the post in the forum generally though, not just trying to see the individual photo?
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Roverlike
IanMc said:
I assume that must be down to where I have the image stored = in my Imgur photo storage account. Can you see it by viewing the post in the forum generally though, not just trying to see the individual photo?
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I cannot see the photo in any way, which is odd as others seems to see it.

Today is May 13th, but I wonder if this problem has to do something with this announcement:


Or you have country restrictions.
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M
The lower arm bush/pin I would have thought pretty obviously refers to the lower suspension arm pivot - if no movement detected it is probably not going to prove an issue, but may deteriorate over the next 12 months to a point where there will be sufficient movement by the time of the next MOT test for it to result in a fail.

The corrosion is of greater concern. "Suspension mounting prescribed area" means part of the vehicle body structure within 30cm of the mounting point of a suspension component, and in my experience having such an advisory this year will lead to an outright fail for "excessively corroded/seriously weakened" at the next MOT test if the situation is not attended to soon after the advisory has been given. As there are limitations imposed upon testers as to the degree of poking and prodding that they are permitted to do during the test, you may find either that it is just a layer of rust scale that can be cleaned away, leaving solid clean metal which can be treated and repainted, or you may find that there are already rust pinholes through the metal that will require some welding doing.

I had a similar advisory for the front subframe on one of my ZRs a few years ago ie. "starting to corrode", but when I removed it and cleaned the scales of rust off, found several holes that I could fit one or more fingers into. Had the tester realised it was at that stage, it would have been an outright fail, so I would always stress that if an advisory for corrosion is mentioned, it is important to attend to it ASAP.
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D
Subframe mounting prescribed area is corroded can refer to inner or outer sill - can be anything up to x amount of inches away (cannot remember distance), and as its on the offside rear it is likely to be around the rear jacking point area. This was a failure on my 160 back in 2017 - Offside Rear Subframe mounting prescribed area is excessively corroded
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M
'Prescribed area' refers to any part of the vehicle main structure/body which is within 30cm of the mounting point of any load-bearing component which is covered by the MOT test. To quote the MOT testing manual:
  • load-bearing parts of the vehicle to which testable items are mounted – these items are in Sections 1 (brakes), 2 (steering), 5 (axles, wheels, tyres and suspension) and 7 (other equipment) of the inspection manual
  • any load-bearing or supporting structure or supporting panelling within 30cm of the mounting location
Parts of the sills are often included due to proximity not only to suspension mounting points, but also to mounting points for seat belts and seats.
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deepfat
Ian looks like your soft southern hands are going to be covered in rust flakes and various chemicals, hopefully that's all it will take. Then next year you can look forward to something like "unable to inspect due to area covered by paint, liquid, gunk etc"
I'm scared to treat the underside of mine as it will probably be an advisory for evermore, I know they do a difficult job but advising an OE undertray is fitted seems a bit daft but pops up all the time.
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IanMc
3
Thanks for your input everyone, it is greatly apprceiated.

I had a good look at all four rear subframe mounts today, and the surrounding areas with Dert's comments about sills etc in mind. Thankfully, the old girl is still solid on both sides in that area, so that was a relief.

But I did find this on the Offside:


Which I have to assume was what the MOT tester found yesterday...

After a bit of wire brushing:


And finally straight after brushing on what little Black Hammerite I had left...


I will take a look at those lower arm bushes next weekend now, then take it from there.

Thanks again everyone.
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IanMc said:
Thanks for your input everyone, it is greatly apprceiated.

I had a good look at all four rear subframe mounts today, and the surrounding areas with Dert's comments about sills etc in mind. Thankfully, the old girl is still solid on both sides in that area, so that was a relief.

But I did find this on the Offside:


Which I have to assume was what the MOT tester found yesterday...

After a bit of wire brushing:


And finally straight after brushing on what little Black Hammerite I had left...


I will take a look at those lower arm bushes next weekend now, then take it from there.

Thanks again everyone.
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Its ok, but I would have taken it off and done the job more thoroughly. But each too their own. Regards D4KGP.
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IanMc
D4KGP said:
Its ok, but I would have taken it off and done the job more thoroughly. But each too their own. Regards D4KGP.
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With all the horror stories I have read about subframe mounting bolts shearing off, that was the last thing I was going to do! Lol
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Notanumber
Why have you shown photos of the anti roll bar bush mounts rather than the subframe mounts ?
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IanMc
Notanumber said:
Why have you shown photos of the anti roll bar bush mounts rather than the subframe mounts ?
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The ARB mount bolts to the SF mount.
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