Thanks chaps: I am going to get an offset and a curved spanner which should do it. I replaced the alternator 14 years ago but have completely forgotten how I did it, must have a been a bad experience and I mentally blocked it out!!!!
Bruce 1964 4/4 Series V Comp (Megan) 1994 +8 (Maurice) tis no more 2013 M3W (Olga)
