|
David..... ....yes, no, maybe..... here is the deal. The 9N has what is called a 3rd-brush voltage regulation scheme (back of generator endplate). It can be jimmied to output upto about 17 volts, which is enuff to charge a 12 volt battery. OK? NOT GOOD, because it'll boil off all that corrosive battery acid. Nasty stuff. The reason it will boil off the acid is because you have NO CONTROL over the charging rate (amps) like you do with a real voltage regulator. OK? The OEM 9N DOES NOT HAVE a voltage regulator, OK? It has a roundcan cut-out relay at bottom of steering column. (disconnects the battery from generator when engine is not turning the generator and charging). The 9N charge rate is operator adjusted for about +3 amps with the 3rd-brush when running. You mention several other "problems", like voltage jumpin' all over the place. Thats a pretty good sign that the generator brushes are bad. And if you're using a digital voltmeter, they are real sensitive to "noisey" bad brushes. Generator bushes $3 cheap. Hard starting can range from wornout engine, check your compression, dry then wet with 1 oz of oil, 5 puffs min. Ford specs: 90 psi min. Low compression can be wornout engine, blown headgasket, stuck rings from setting too long. Write down your compression readings, most of us have CRS. (can't remember stuff) Stuck rings are fairly eazy to un-stick with Marvel Mystery Oil (MMO) treatment. Its a cheap $5 try. Hard starting can also be caused by "bad sparkies". Bad sparkies can be caused by 12 volts on a 6 volt ignition coil. Bad sparkies plugs, recommend Autolite AL-437, or Champ H-12, or NGK BP4L. Modern no lead gasoline can foul your sparkies and they can still look good. You can never go wrong by replacing your sparkies, just check the gap right outtta the box 0.025". OK? Hard starting can also be caused by gunked up fuel system, including clogged carb jets from old gasoline. Do the eazy things first. Check the filter in glass valve under tank. Check the filter in the carb inlet elbow. Theres a 3rd filter inside the gastank that actually melts but the only way to check it is to unscrew the shutoff valve assy. If you do that, you'd want an empty gas tank (gas is gravity feed), and if I did that, I'd have a new tankvalve to put in, $20 cheap. Hint to tell if your starting problem is fuel or sparkie related. Give a quick squirt of ether quick start into carb mouth, and try to starter. If burps and runs ether, ya gotts a carb problem. If'n it don't do quick run on ether, ya gotts a sparkies problem. Don't use a lottta ether. The last hint, remember the 6 volt mantra: "keep'em clean, bright, and tight" and don't be fer usin' enny of them thar wimpy farrin' battery cables, gettcha some 'arry chested 'merrican made 1/0 (thick as your thumb) 6 volt battery cables for eazy starting..... ...respectfully, Dell
| 
