New guy here, Pbean I also have a Michigan 75A, it maybe old but I would not call it junk. It has always started even on the coldest days here in WI. but not today. I have been useing a 12 volt deep cycle battery for the last three year with no problems but today I had to pull it to put it on the charger. I do not care for the positive ground hook up to the battery this loader has. Question can this be change over some how to neg. ground without to much trouble, it dose still have the OEM generator on the engine.
Northern
The original regulator is VERY expensive. I remember paying something like $85.00 and that was many years ago. Positive ground regulators have been scarce for a long time.Northern i have a one wire gm alternator on mine it works great and i put it on with out much trouble at all and it was about 60$ i couldnt have got the generator rebuilt for that and your regulator is inside alternator so its less connections to deal width.Your fuel pump should work with either polarity my mechanical pump is leaking thinking about switching to electric fuel pump also would like to see some pics of your loader if you have any
My Allis 715 TLB came with the mechanical lift pump bypassed, and an in line electric fuel pump. It seems to work well, and sure makes bleeding the fuel filters easy. Northern, I suspect you will have to observe polarity, and with a one wire pump that may be a concern. My pump has 2 wires, so I think the case is insulated from ground. At any rate, most auto parts stores stock a low pressure in line fuel pump for about $35. I'm not sure if this procedure is acceptable, so if anyone has any experience with using these pumps on Diesel engines.... please advise.