siezed bolt

[limax2]

And the tension bar is stuck at a fixed angle, I have not released the tension on the bolt yet is it suposed to swing when bolted up.

Any idead as to the best way without bending anything to get the bolts out, I have sprayed Plus Gas all over both nut/bolts and the hanger and the bolt now rotate but together by hand. Befrore you needed a socket wrench on the bolt to rotate them so the penetrating fluid is working worked.

If the top nut and bolt comes of ok I can remove the tension bar with the hanger attached then I should be able to hammer the bolt out.

When bolted up the tension bar is clamped tight to the fixing points. The only slight angular movement is when adjusting the chain tension, which is when I would slacken off those bolts. As the bolts are rotating it should not be too difficult to tap them out. Before you start hammering I would use some firm support at the bolt head side, possibly a piece of tube or a socket that the bolt can slide into.