Wiring diagram on 1951 john deere m generator generator#
The top mounting lug fit the existing generator tension bar and I didn’t have to buy a smaller V belt.
I replaced Massey Ferguson generator, with a Datsun alternator, and only needed to use a longer bolt for the mounting lugs and some ¼" galvanized pipe, cut for a spacer. Mechanical mounting is going to be a case by case issue. Take care not to leave dangling wires on your tractor. My tractor needed only one jumper wire to supply power to the ignition switch after removing the regulator, generator and associated wiring. Note wires from instruments or parts other than the generator/alternator and be ready to replace their function either by routing them differently or by adding jumpers. Many manufacturers use the regulator terminals for convenient power distribution to other ignition parts (like the ignition switch). If your system is something else, you must make this conversion before continuing with an alternator upgrade.įirst, you need to remove the previous charging system (generator or alternator, including the associated voltage regulator.) You may wish to save these parts for a future classic restoration. If your battery is 12v and the negative (-) post is connected to the chassis or engine block, your system is 12v negative ground. I used a Datsun alternator for my Massey Ferguson because the diameter was the same as the original generator.īefore you begin you need to make sure your system is a 12v, negative ground charging system. (Type #GM 10 SI, Model 7127, Cost is roughly $35), but nearly all internally regulated alternator’s have the same output wiring. I reference the Delco alternator used in most GM late 70’s cars and trucks with a 350 cu. This article addresses the electrical adaptation of a modern alternator to an older tractor. Modern alternators offer improvement to an older tractor's charging system and cost far less. This is a very simple description but it will work for our needs. That means there is one device that turns energy from the fan belt into electrical energy,Īnd another device, called a regulator, that keeps the voltage from overcharging the battery. Older tractors have externally regulated generators or externally regulated alternators, in some instances.
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