Posted by Charlie M on May 21, 2017 at 05:11:36 from (50.49.146.193):
In Reply to: Farmall Super A help posted by HVFDfirefighter on May 21, 2017 at 04:16:41:
With an alternator your tractor is probably 12V. To get a tractor to turn on 6 volts requires heavy battery cables in good clean shape and yours probably aren't. On the distributor side that black thing you are seeing is the coil. To make 12 volts work on what used to be a 6 volt system you either have to add a resistor to get the voltage at the coil down to 6 volts or a coil that has internal resistor. Resistors do go bad.Your lawn mower battery probably doesn't have the cranking amps to really crank the tractor fast. Those small engines really crank with a good 12 volt battery. The knob you are referring to sounds like the light switch. Is it near the amp meter on a rectangular box with a round top? One thing you may find is your tractor has gotten to where it needs a valve job. I've bought 3 tractors over the past few years (A, Cub and just bought a 100 which is mostly a super A with different sheet metal), they had all sat protected but for a long time without running. All 3 didn't have enough compression to get them to run. Not running is bad news on valves from tractors that old. Super A's were late 40's and early 50's so a lot of things like wiring will have seen better days. Good news is you can find just about any part you need for those tractors new and lots of used stuff around too.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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