Posted by farmallhal on March 08, 2011 at 11:18:09 from (76.4.170.60):
In Reply to: Alternator posted by Elmers Grassman on March 08, 2011 at 06:19:53:
I converted my 1951 Farmall H several years ago using a Hitachi 14231 12 volt negative ground alternator. I used the original generator mounting bracket by just turning it upside down and using a long bolt as the lower pivot for the bracket and alternator. The upper adjustment arm was fine the way it was. Also, I was able to use the existing original IH generator belt as no length changes were required. I put a split tooth lockwasher between the two pulley halves as the Farmall belt is a little wider then the drive belt the alternator is designed for so the belt would be further down in the pulley. You will have to open up the holes in the either the generator bracket or the alternator (I don't recall which) as the Hitachi is in metric while the bracket is SAE sizing. I used some washers and cut some tube spacers to place the alternator in line with the pulley driving the alternator. I still had sufficient room for belt adjustment within the limited confines between the valve cover and the tractor hood. I have documented the entire process I used in converting the 1951 H to 12 volt and if you would like me to send it to you by email please let me know as my email is open on this post. I have since become a fan of just leaving the H and smaller tractors as 6 volts by making a few improvements to the wiring and and connections as the 6 volt system is certainly adequate for starting them in about any weather if maintained correctly with the right size and shortest possible cables, clean and bright connections, etc. It is your choice but I just cleaned the connections and replaced the smaller sized cables on the existing 6 volt factory system on my 1952 H and it starts just as well as the 12 volt 1951 now. Hope this helps, Hal.
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