My nuts won't come off

'Plus Gas' your nuts liberally and leave them to soak overnight! I have been reliably informed this will do the trick (or get a spanner with a longer handle):Banane44: Hope this helps! :speechless-smiley-6

Heat and cold 

If you are talking about the nut that usually undoes with a puzzle key then one way to go is to belt on a slightly smaller socket that you dont mind spoiling and then trying to undo it with a really long breaker bar or impact wrench. Regards, Don.

Weld a hex directly to the head of the nut if possible, elimante the key and get the pentrating oil and long lever approach.... all else fails its a drill and retap.. if you bugger the stud replacements can re pressed into the hub carrier from the rear, worth a tack weld once done as second time interference fit won't be as good as the first... good luck...

probably found that the two differing metals have fused. Might sound mad, but try tightening it first - then slacken. The heat/cold method will also help to break it's hold. Also need to swear at it considerable, this always helps. but as per last post, if push comes to shove, welding directly to it, and using a big lever, and pray the head doesn't sheer. Vipes

I wouldn't weld/smack sockets on or drill until you have rounded off the key, there's no point yet. Try the heating up method and the penetrating oil method too. Make sure the face of the key and the key it's self is free of oil when you come to wind iy off as any oil will cause it to slip which will round off the Key. Also tighten up all the other bolts to take the flex/pressure off the stuck bolt.

Thanks for the suggestions guys...have tried them all (bar welding onto the nut)..and still no joy. Going to have a chat today with a specialist machine shop about drilling them off :sad_smile:

Yep the last resort is to drill close to the stud then use a good sharp chisel and open up the nut . Used this method many times on trucks when I was working , worked every time . If you are careful you wont damage the stud but I would change it anyway as the stresses imparted during the attempts at removal are bound to have weakened it. Not a job I ever looked forward to. Regards Mike B