Originally Posted by mjod
But the floating disks are so loose that they now have 3-4mm play. And are starting to cut a slot on the pin which holds the brake pads in position
I think you meant "on the pin which holds the brake disk in position" ? And I'm taking it that way below.
The buttons (pins) are replaceable. And are rated as 'consumable'. They sit between the disk and the carrier, have one wave (spring) washer and an E clip. Get some replacements, they usually come with wave washers and E clip replacements too. Have them posted out to you at some place you'll be. You will want to replace them. They don't cost much. This is the way it is on my K model.
Until you can get some replacements, rotate them around a bit so the ware is evened out over the surface, hold them at that rotation with some silastic (RTV732 or any silastic product). You might even reduce the ware by putting some silastic in the joint area - rotate it so it is held as if the brake was applied. Why silastic? Because it is a good glue that will withstand the temperatures of the disk.
You could simply bolt them in place ... the disks are made to float so that when they heat up they don't distort, should not be a problem unless you are very aggressive with the brakes, overloaded down hill.. etc. You may need washers and spacers made up to do the job. R80G/S disks were riveted in place.If you go this way, do keep checking the nuts & bolts for tightness.
Last edited by Warin; 19 Jul 2013 at 02:56.