oliver 60 wiring

I have a 1947 Oliver 60 row crop. It has 12 V battery from previous owner,but I don't think they changed the regulator, generator, etc. I put a meter on generator but could not get a voltage reading. It is positive ground. Is that ok? How do I test generator for voltage output? Is there wiring diagram available? Any help appreciated. Richard

   Tell us what you have on the tractor.  Do you have a distributor with a coil or a magneto?  Assume that it is a Row Crop.  Yes it was positive ground originally.  Which generator does it have?  Original was a third brush type that did not use a regulator mounted on it.  Should be a tag on the generator with a number stamped on the tag, give us the number.

You can test the generator by removing the belt then jumping battery voltage to the armature terminal. If the generator is good, it will spin like a motor. While motoring it, ground the f terminal. It either speeds up or slows down. Can't remember which though.

It better slow down. Also take it off (generator) first, then take it apart and clean the commutator good with fine sand paper. Remember the field grounds through the light switch on a 60 What is the spacing on your third brush? Did you ground the field at the generator and check outoput?

It has Delco-Remy gen. Model 1101363 Ser.# 7E-5. Voltage regulator sits atop generator. I did not find coil or magneto yet. Will look more for them tomorrow. The light switch has no wiring hooked to it. The battery runs down after use over time.

     Your genreator number listed is a 6 volt 3rd brush generator as originally installed on your model 60.  This model generator is an "A" circuit, thus the field is hooked to the "A" brush and is grounded through the light switch.  As original from the factory, it had a wire from the "F" terminal to the light switch resistor.  When the light switch is all the way in, it is low charge, pulled to the second stop it's full charge.
     Direct ground the "F" terminal and run the engine at high idle.  Observe the ammeter, if the battery is not fully charged you should have in the neighborhood of 10 to 12 amps.  If not chargeing at all, you may have to polorize the generator, do so by a jumper wire from the Battery on the regularor terminal to the "A" terminal on the generator, touch it momentarily.  If it is charging, however not at the 10 to 12 amp rate, remove the dust band on the rear of the generator.  Now loosen the screw on the back side of the generator that holds the third brush in position.  Move the third brush closer to the "A" brush to increase amperage and of course move away from the "A" brush to decrease amperage.
     Now you can hook all the wires to the regulator and if the regulator is working properly (your regulator will control the ground side of the field instead of the light switch).   It should work properly.

I found the coil and distributor tonite. The regulator has 3 terminals on it. One is marked "fld" and it goes to stud coming out of rear gen body. The terminal farthest to rear has no wire going from it, but I suspect it might be what goes to light switch. Also found a broken wire that goes from middle terminal of regulator to ammeter gauge. I replaced that and re-polarized the geny. The gauge now shows a positive charge. More later.

Now I have a new problem after hooking up the wire from geny to ammeter. When I shut tractor off, the geny buzzes and runs like electric motor when belt is loose. I need to figure out what wire is feeding power back to geny when ignition is turned off. Any ideas?

volt meter

Does anyone know where I can find an accurate wiring diagram for a 60 with 6V + ground distributor ignition? I have a reprinted owner's manual, but it doesn't have a complete wiring diagram. I have the resistor light switch and and trying to wire it up correctly. Should it have a voltage regulator? It currently has a Delco-Remy 790. Thanks in advance.