Assuming it's English threaded, undo anti-clockwise on the non-drive side and clockwise on the drive side. If it's moving a little bit, try tightening it up a touch and then undoing it again - this could get it moving a bit more. Like others said, use proper tools.
Assuming it's English threaded, undo anti-clockwise on the non-drive side and clockwise on the drive side. If it's moving a little bit, try tightening it up a touch and then undoing it again - this could get it moving a bit more. Like others said, use proper tools.