Broken Strut Mount. Need Advice. - Mazda3 Forums : The #1 Mazda 3 Forum
 
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post #1 of 6 (permalink) Old 12-23-2015, 09:15 PM Thread Starter
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Broken Strut Mount. Need Advice.

My strut mount on the front passenger side is broken. The piece of metal where the piston is bolted to the mount was completely torn apart and the only thing compressing the piston while driving was the hood of the car.

It is very similar to what this guy at TorontoMazda3 is experiencing, except that my wheel was not hitting the wheel well, it was more or less staying in place.

I figured I could just buy a new mount considering the strut isn't terribly old and doesn't appear to be damaged or leaking. However, when I jacked up the car to get to work, the piston lowered below the top of the mount and was pushed into the side and got stuck at an angle. Because of this it looks like the spring is almost bending slightly.

My concern is that I won't be able to attach the spring compressors properly so I can take the strut out safely and put the new mount on. All the tutorials I have seen only deal with using the compressors on struts that have already been removed. I'd rather not have the spring snap out and break my arm or worse.

Have any of you experienced an issue like this? Is this something I can do myself or should I have just gone to a mechanic in the first place?

Thank you for any help you can give.
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post #2 of 6 (permalink) Old 12-23-2015, 09:48 PM
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Just out of curiosity, how old are the struts?
And if they were replaced, were the top hats not replaced?


At this point if you don't think a compressor will do the job, the next option is to cut it out.
Seriously.

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post #3 of 6 (permalink) Old 12-23-2015, 11:04 PM Thread Starter
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Unfortunately I don't know the exact age of the struts. The dealer I bought the car from said he had replaced only one of the struts, which as I understand is not supposed to be done. Assuming the strut he replaced the old one with was brand new it would have seen just over two years of steady use.

Looking at the top hats the one that broke seems to be newer, as the one on the other side as fairly rusted and dirty, yet still intact.

I haven't tried using the spring compressors yet. I have read several stories from people saying how dangerous it can be if you don't compress them properly. I'm probably being paranoid but I haven't tackled a project like this on my own so I'm being overly cautious.
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post #4 of 6 (permalink) Old 12-28-2015, 09:02 PM
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When i got mines from Dorman and they got broken after a month i did replaced them with new ones KYB SM5589. To take them apart i did used compressors for spring but to put the new ones on i didn't and maybe it's just me but it was just very easy to do and no danger at all :P

But yeah, i wouldn't recommend brand Dorman for your new top hats, but that's just my opinion

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post #5 of 6 (permalink) Old 01-02-2016, 10:04 PM
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I had to replace an upper strut mount, turns out it was pretty simple. The springs are light and can be compressed using a spring compressor and a 3/8" drive ratchet -- by hand. Be careful that the spring compressor doesn't slip, as that would be bad.

Actually, I would be surprised if you couldn't just jack the car up high enough on that side for the spring/strut assembly to unload. The spring's free length isn't too much greater than the extended length of the shock.

EDIT: When you go to rent the tool to compress the spring, you need a strut compressor.
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post #6 of 6 (permalink) Old 01-03-2017, 12:25 PM
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I just replaced my struts and strut mounts. Could a new strut or mount be bad upon delivery?? I have clunk on the passenger front and it sounds big and heavy. Like something bottoming out or slamming into the car over bumps.
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