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Jonnoh
PostPosted: Sun Feb 07, 2016 10:36 am 
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Just curious as to why these are used? Sealing? Prevent movement?

Jon
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DavidE
PostPosted: Sun Feb 07, 2016 10:56 am 
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Jonnoh wrote:
Just curious as to why these are used? Sealing? Prevent movement?

Jon


I don't know, but as they were there at build, I just put them back on re-installation of my front subframes.
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drmini in aust
PostPosted: Sun Feb 07, 2016 11:10 am 
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Allows the holes to be bigger for easy alignment.

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Jonnoh
PostPosted: Sun Feb 07, 2016 4:54 pm 
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drmini in aust wrote:
Allows the holes to be bigger for easy alignment.


Thanks all but forgive me, but how does a thin compressible washer help instead of an 'ordinary' one which would do the same thing? I'm suspicious its to prevent movement because it gets compressed into the shape of the hole when tightened. Having said that one edge was bent upwards so perhaps its to help prevent turning of the bolt similar to a lock tab. Perhaps I would need to ask the engineer.

Jon
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Mick
PostPosted: Sun Feb 07, 2016 5:21 pm 
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Location: Under the bonnet son!
They're called "Panel" Washers and are still available on the shelves at bolt shops and even bolt racks at Autobarn, Supercheap and the like.
They help to spread the load more in thin metal panels as the bolts are tightened up to prevent the metal tearing.

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