Yesterday I had a bit of work on the car. In the past few days I have cleaned and painted both dynamo and regulator; dynamo brushes seemed in good order since haynes manual says to change them under 11mm while they're still at 19mm (new ones measure 22mm), but I changed the bearing (it was blocked, a bit of greased seemed to have it working again quite smoothly, but it was a very easy swap and the bearing is cheap).
I unwrapped the tape that was hiding the wire linked together when the alternator was fixed, and I was prepared to cut and fit new terminals, but what a surprise!
They're still there, an unexpectedly clean work for the standard I am used to. Just place them in the right point and bot them.
The belt for the alternator (680mm) resulted too long, so I went for a 660mm I had lying around; the car started (after a first delay since i forgot to put the distributor cap on again) and it seems to work well... 12,9v on the battery, 6v on the dynamo at low rev growing with the engine work. Even the dash light now it's working as it should, being light at minimum and shutting off giving fuel to the engine.
Any further test suggested to check if dynamo and regulator are working fine, before I take the adventure of a long trip?
The regulator is my worst worrying, cause it seems pretty delicate and it was sitting on a scrapped car for so many years... If it falls down, how do you suggest to do? any modern suggested substitute I can fit in the original housing?
Now I have to take off the dynamo again cause I remembered (fortunately in time) that I forgot to put back a key on the shaft (the original misses, I think it felt out when I extracted gently the bearing with an hammer) and block the pulley with his nut...