Alternator on Case SC - Questions

Hello all! Well, I am working on converting all of my tractors over to 12 volt with alternator. Farmall M, H, and John Deere A should be easy. My Case SC, however seems to prove a little more difficult as for as mounting goes. Here are my questions:

I picked up 2 Hitachi 14231 alternators as it is smaller and not as 'bulky' as the Delco 10SI (which I have two of, one for my M and one for my JD A). Plan to put the Hitachi on the Farmall H and Case SC. Delco 10SI will go on the JD A and IH M. Here are my options or plan of attack at mounting the alternator on the Case:

Option 1) Drill a 3/8 hole through the front flange of the engine block (See photo of screwdriver pointing to marked location, and mock-up placement of alternator). This would leave approximately 1/4" of material left above the hole. I would then mount the alternator using a 3/8" shoulder bolt with sleeve spacers to obtain the correct spacing. The top adjustment bracket would still be used in the factory location (although I would have to make a new one). My only concern is will I risk the front flange of the block cracking through this drilled hole? The tractor doesn't get heavy use - mostly just threshing shows and may get occasional yard chores at our next property.

Option 2) Remove the rear-most tab on the bottom side of the alternator (possibly compromising the strength of the front tab). Mount in the factory generator location. My concern here is the bottom front tab, if it is the only mounting point, will eventually crack or break due to both vibration and the amount of weight that is being held by just the single bottom tab.

Option 3) Mount the alternator in the factory generator location, but this would involve having someone fabricate a custom bottom bracket (as I do not have a welder). This is probably the most secure method, but would be quite involved. I don't have easy access to equipment to do this.

What are your thoughts on this? Would I be better to use a Delco 10SI? It seems that this alternator fits nicely, it is just the mounting that is giving me concerns. (I can always use the Hitachi on the IH M, and a Delco on my Case).

Here's what I got Ken hope it helps Byron

Mine is mounted against the hole in the 3rd pic against one ear and a spacer is installed between the ears. been like that for years Good luck with it Byron

My 2 are mounted the same, spacer to fill the space between the alt ears and the mounting flange on the block. Both are running units and I cannot get between the block and the alt to get a shot of the mounting system. If you end up with the GM alt, a very good choice, as it's reliable and very inexpensive to go thru, use the 3 wire with the diode or an hour meter (I use an oil pressure switch) rather than the one wire. On a street rod the one wire is great, but it takes rpm to get the field to energize, and when I had one on my SC, your had to really rev it to get the alt to kick in, then it was fine. Tech stuff says it needs 15 to 1700 revs and that's up against the government on mine.

Thanks for the input! I do plan on using a oil pressure switch for all of my conversions as they are all magneto ignition tractors. Here is a photo of the switch I have installed on the Case...

Bhunt,

Thanks for the response and all of the photos! I guess removing that mounting bolt never really crossed my mind, but that looks like a pretty feasible way to do it. You must have just used a long piece of threaded rod or a shoulder-bolt as your mount bolt on the bottom side then? I am sure I will have to fabricate some type of top bracket, or go to my local auto yard to try to find an adjustable top bracket that is curved to go around the alternator fan.

(quoted from post at 19:26:57 03/16/17) Bhunt,

Thanks for the response and all of the photos! I guess removing that mounting bolt never really crossed my mind, but that looks like a pretty feasible way to do it. You must have just used a long piece of threaded rod or a shoulder-bolt as your mount bolt on the bottom side then? I am sure I will have to fabricate some type of top bracket, or go to my local auto yard to try to find an adjustable top bracket that is curved to go around the alternator fan.

Click to expand...

Yep Just a long bolt and nut and as you can see there's no threads in the hole anymore it just slides in.
Good luck with it Byron