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10-03-2021, 07:09 AM
(This post was last modified: 10-03-2021, 07:11 AM by Sol.)
Likely a torx as everything else on mine is torx. Never seen an Allen used anywhere mate in the B9 but not so certain on your M59. One of the guys with those will know for sure. I did do the brake discs on my last M59 and everything down there was torx.
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Brilliant, glad to help mate.
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Torx, I hate torx, had the brake drums off my M59 last week, ended up drilling one of the retaing bolt heads off. When I repolace the brake linings I will replace the csk bolts with allen screws.
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Torx are fine when new. Old and rusty ones are a different story trying to get the bit to penetrate properly.
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Stainless steel C/S Allens are a good replacement - also they don't need to be tight - the wheel bolts hold the drums on and the C/S are locators, stopping the drums coming off when the wheel is changed. It would be nice if the drums did come off that easily!
If you use Coppaslip with the originals apply mainly to the screw, as a blob in the hole can be pushed forward into the drum/shoes.
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14-03-2021, 08:52 AM
(This post was last modified: 14-03-2021, 08:52 AM by RattyCortina.)
(13-03-2021, 01:56 PM)oilyrag Wrote: Stainless steel C/S Allens are a good replacement - also they don't need to be tight - the wheel bolts hold the drums on and the C/S are locators, stopping the drums coming off when the wheel is changed. It would be nice if the drums did come off that easily!
If you use Coppaslip with the originals apply mainly to the screw, as a blob in the hole can be pushed forward into the drum/shoes.
I think the screws were originally to hold the drums on during production before the wheels were fitted, IIRC MK3 Granadas had metal clips pushed over the studs for that purpose. I'm sure there were some cars with no screws at all. I remember a piece in a classic car mag years ago, I think it was a MGB project car they had and they were ranting how dangerous it was that the previous owner had been driving about with no screws in the drums... They are handy on the back of RWD cars when adjusting the brakes, so that spinning the drum on one side doesn't make the one on the other side fall off.
My van: 2008 Berlingo 1.6 HDi Enterprise - a bit ratty!
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They were fitted at the factory so I prefer to have them. My son's Ford Focus has nothing to keep the disks tight to the hub at the front. They just slide over the wheel studs.
One reason for the scews, since Citroen use bolts instead of studs for the wheels, is to keep the bolt holes in the in the drums lined up with the holes in the hub to make it easier when refitting a wheel
Peter
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