Help understanding Voltage regulators and wiring.

Jeff-oh

Well-known Member
Tractor: TE-20 (cont. Motor)
Electric system: 6V
I have the wiring diagrams from FENA for TE and TO tractors.

My Voltage Regulator looks like the one in the picture:
It has three terminals labeled as follows:
BTY - I assume means Battery
ARM - I assume means Armature
FLD - I assume means Field

The tractor came to me 14 years ago hooked up with the wires going from the VR to the three various places directly. Tractor has never seamed to charge the battery correctly. Not sure if it is a Genny, VR or wiring issue.

I was cleaning all my wiring up and reviewing the wiring diagrams and now I am confused over the VR terminals and labels,

On the TE/TEA wiring diagram the VR is labeled with terminals:
F - goes to Field of Genny
A- goes to the battery with the amp meter in the line.
E- Goes to Ground
D- Goes to Armature of Genny

On the TO-20 diagram /amp meter the VR is labeled with:
F - goes to field of genny
L - goes to the ignition switch
B - goes to the battery with the amp meter in the line.
G - goes to the armature of the genny.

On the TO-20 diagram with the red light charge indicator (From the "on the Farm Service Manual" the VR is labeled with:

Field - goes to field of genny
Load- goes to the ignition switch
Battery- goes to the battery
Generator- goes to the armature of the genny.

Can you help me correlate all this an what my three terminals would be equivalent to on the TE-wiring diagram.

Thank you.
Jeff
wm_FAG10505A.jpg
 
Jeff,The VR needs to be grounded to tractor frame,F to field,B to battery in line with Amp meter,A to armature,did you flash the VR to polarize it? On my JD it has a A circuit and you flash the Arm to batt term.I think on the B circuit you flash the Field to batt.,someone smarter than me will chime in and help you out,mine also has to rev. higher to charge but thats a reg. adjustment I haven't done yet.Also you can have your Gen. and Reg checked at a rebuild shop in your area,just ask around if you don't know of one.
 
I recently had a 12V generator rebuilt for my TO-35. the guy I go to has been in business for 40 years and he told me after I told him I had a positive grd. sys. that the generator will polarize itself after it runs a bit. any thoughts?
 
Not to the point of polorizing the generator yet (flash). Just trying to get the wiiring cirucit right. with this one I have to assume the ground is at the mounting bolr. I did polish the frame and VR where it mounts. The lettering scheme on this VR seemed self-explanitory it just did not match up with the terminal lettering of the wiring diagrams.
 
Why don't you wait till the show Jeff? You will have unlimited access to the finest collection of brainpower since the Manhattan project.

Maybe rather than the normal event, we can do a paint job? Even if it is a clear coat? Questions from the crowd? De-bugging? describing the whole 20?. Then slowly, carefully, narrate the whole build up.

With Miner's knee and my wrist, I don't think we will be any help winning any races this year. But I will bring my multi meter and a milk crate to sit on. Miner can bring some rustoleum... and a nice new brush!!!
 
Jeff, my EE education has been helpful with the wiring and functions, but, some of the stuff is wild. The generator or alternator provide DC or AC, the regulator in the alternator converts to DC.
The regulator with the generator by building fields on the relays and with the internal resistor,a reverse current is sent through the battery, charging it,until charged then the fields go back to normal. From the diagrams of the te 20 and to 20 the key switch completes the charge circuit when its closed.
The load is the Armature the TO 20 diagram has it going to the armature, the field is the field or the stationary windings, the armature is moving so its also referred to as Dyno. The other confusing labeling was A going to the battery through the meter I think its labeled A because of the amp meter, Do not know what flashing means, if it means connecting that would be something to check, also check the coils in the regulator and the resistor in the regulator.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top