Hello there, again another new member here, with a SOM plant from the 60s. I have spent a bit of time with it since I brought it home and discovered that someone has disconnected the original mains fail, SOM control and wired in a newer version. The new starting system utilises a separate starter motor and 12 volt battery. I am wondering why they would do this?? I have had it running, but have a bit of a miss on one cylinder, which I am looking into at the moment. Electrically, there is no output, until you press a button someone has added, that shorts out totally the shunt field resistor. Again, not too sure why they have done this? I was wondering if it has anything to do with the old metal rectifier?? I am going to replace that anyway, as it is so old.
Any information or advice would be greatly appreciated, as I would love to get this machine back into working order.
The details are Plant No. 41439LB Engine No. 4353SL215 Alternator No. 33851/16 Mains fall/auto start box Type MS No. 81512
I have searched the site, but as yet not found anythng quite like the plant I have.
Thanking you all in advance.
Dave
