Can anyone advise me to the best way of removing/loosening the slipper plug on a sierra rack?

I need to loosen off the tension as its way too tight, but I cannot budge the slipper plug & its almost starting to round off with the allen key

Any advice would be much appreciated
Lee.

Photo of rack

I had the same problem but the solution was quite simple. As you can see in the picture there are three "dents" in the rack at the edge of the slipper plug. These are made to keep the plug from coming loose. I used a Dreml to grind them down a bit and then the plug came out really easy. Hope this helps.



[Edited on 25/9/08 by fege]

I have ground them out but it still wont budge

Can anyone confirm if it has a conventional thread (anticlockwise to remove) and not a reverse thread?

Regards,
Lee.

Pretty sure it is a conventional RH thread.
When tackling bolt heads like this that are very shallow, I always turn a bit off the end or the socket to make the serations (that grip the corners of the flats) square to the end. For some reason tool manufacturers always have a lead-in, which on a large socket or ring spanner can take up 3-4 mm of the working depth. If the nut is only 6mm deep it is obvious that it is quickly going to round off when you put a good load on it.
hth

[Edited on 25/9/08 by Phil.J]

Managed to get it loose at last

Thanks guys

[Edited on 27/9/08 by maximill666]