Summary:On try to torque down the bearing nut, the whole stub axle rotates. This is on a genuine Citroen trailing suspension arm.
Finally got around to replacing a rear trailing suspension arm . A while ago I bought on Ebay a genuine Citroen arm assembly (5175X8/9) going cheap, from a Citroen dealer presumably getting rid of old stock. It has the advantage of having the pivot bearings already fitted and adjusted. However, it has the draw back of coming without a hub bearing. It does come fitted with the stub axle - and there lies the problem.
I have fitted the arm OK (bit of a struggle to align the pivot bolt), and expected the fitting of an after-market hub to be the least of my problems. However, on trying to torque down the bearing nut I find the stub axle rotates. Now I am in the situation where I cannot torque it down or unscrew it - the axle simply rotates.
I assume something is supposed to prevent the axle from rotating. Haynes mentions when fitting a new stub axle ....."align its spines with those of the trailing arm". However, I think it reasonable to assume that the Citroen assembly would come with the stub axle ready secured. I can feel splines deep inside the hollow stub axle, and thought these may be to locate a tool to counter the nut torque, but evidently not.
Anyone got any ideas.