MF 65 Alternator

jjbenson · Nov 30, 2017

Hey Everyone- I am reposting this from the MF threads, I've gotten 140+ views and not a single reply. I hope I'm not being impatient..my apologies if so...
I just picked up this 1964 Massey Ferguson 65 diesel Mark II. Other than the usual fuel leak at the injector and primer pump, it runs well. Currently I have to jump the starter due to a failed ignition switch. I need to re-wire the whole thing, but for now I want to fix the ignition so I知 not jumping the solenoid. I understand this machine originally came with a generator, and it appears it痴 been converted to a alternator. I also understand that some alternators have a built in regulator and some don稚. I have included a few pictures of the alternator, and was hoping I could get some help. Can anyone confirm that this alternator has the regulator built in? I have the wires and connectors ready, I just don稚 know where they go. Any help would be appreciated!

And if anyone can recommend a new ignition switch, I知 open to suggestion. I see 2,3,4 post switches that are recommended. Many folks say they are cheaply built, and I don稚 mind spending money on a good one. Its hard to find good reviews on them as well. Its a diesel, so it needs to have a heating mode.

Stimw · Nov 30, 2017

Here is a link to your alternator wiring and info on it- Wiring up the GM 10SI Alternator
It is a Delco and should be 1 wire.

jjbenson · Dec 1, 2017

Stimw, Thanks for link. Mechanically Im not bad, but electrical issues I struggle with. So as I see it, I only have one terminal, the battery "BAT" one. Im assuming the the smaller terminal I see next to the "2" and the "f" is not another terminal due to its smaller size, but I could be wrong? There appear to be three of them, but only 1 has a number/letter next to it.
So, do I link my battery, ignition switch, etc to the same single terminal labeled BAT? I'm assuming now that I don't need a regulator, and this model alternator has one built in. do you or anyone think I still need a another regulator to run all the accessories off of?

bigdeano · Dec 1, 2017

If the alternator charges the battery while it's running it must be a one wire alternator with a regulator inside. Just hook your battery and fuse block etc to the BAT terminal and it should work. If you have a voltmeter check to see if the voltage increases to about 14v on the bat terminal when it's revved up.