68 ford 3000 diesel - charing system schematic

Does anyone have a wiring diagram for the charging system?

My diesel 3000 is partially working. At idle i have 8v at generator armature 12.3v at battery. Put engine at 1,000 rpm and its 16-17v at armature but 12.3v at battery. 1,200 rpm its 20v at armature but still 12.3v at battery.

Ive checked it at the regulator i have battery voltage at the left most two battery terminals. The right most terminal has a good ground but no voltage. Terminal to the right of it is same voltage at the generator.

So i need a schematic to finalize my troubleshooting before i go throwing parts at it.

Forgot to mention in case someone desides to help troubleshoot. The generator light is functional. Idle it barely glows by 800 rpm its completely off. I just installed a new battery as my napa battery just wouldnt crank the diesel over.

I don't know where you can find that
schematic online.
But if you email me I will send you a photo
of it from the manual

(quoted from post at 14:07:12 10/28/17) I don't know where you can find that
schematic online.
But if you email me I will send you a photo
of it from the manual

Click to expand...

Its in the manual? I have a pdf file of the four manuals for the Ford 3000 tractors, wasn't sure if it was and I didn't have access when I made my post. I'm just trying to figure this out in my head on the way home.

I found one schematic online but if its right then it should be charging but its not cause if the tractor starts then all the electrical is hooked up between the generator/regulator/battery and it sounds like it is the regulator not sending the voltage to where it needs to be its also not regulating the voltage like it should either since it varies from 8 volts to 24 volts. But I am looking in my manuals right now since I am home now going to see what I can come up with.

Been doing some reading, need a new regulator even if it wasn't messed up it probably is now with the D circuit at the generator and regulator was going up to 24 volts while running the tractor. Hopefully didn't wipe out the 1 year old generator if so no big deal $100 isn't much to swap it.

But besides that I just cant explain or figure out why I have charge at the regulator but nothing at the battery but yet the generator light goes out. Only thing I can do is just throw a new regulator on there and hope it fixes the problem. Only thing is I don't remember seeing a WL terminal on my regulator and now I am wondering if it is there or not. Down side to not having the tractor local where you can go check have to wait till Saturday.

Warning light is between the "WL" connector of the VR and the "Run" position of the key switch which is directly connected to the hot side of the battery when the key is in the run position, so when the WL terminal of the VR gets close to or equal to the voltage at the hot side of the battery the light will go out. When everything is functioning properly the light going out means that the battery is charging, but when the VR isn't functioning properly it just means that the WL terminal of the VR and battery are at the same voltage.

(quoted from post at 10:35:42 10/29/17) Warning light is between the "WL" connector of the VR and the "Run" position of the key switch which is directly connected to the hot side of the battery when the key is in the run position, so when the WL terminal of the VR gets close to or equal to the voltage at the hot side of the battery the light will go out. When everything is functioning properly the light going out means that the battery is charging, but when the VR isn't functioning properly it just means that the WL terminal of the VR and battery are at the same voltage.

Click to expand...

Well what is odd is my WL connector is not plugged into anything. The regulator doesn't have a WL terminal its missing. I have a new regulator coming in how ever to replace this one as this one is not regulating voltage nor is it charging the battery.

What I found out is there is a cut out relay that cuts the battery off from the charging circuit. This has to not be working on mine as I have almost 24V at 1,200 rpm idle at the armature terminal at the generator. The D terminal at the regulator which is the armature connector is showing the same voltage. The two battery terminals on the regulator which are linked together are reading battery voltage of 12.3V and the battery itself shows 12.3V. Flipping the headlights on at this time shows the battery dropping to 12.2V while the headlights are on.

To me it sounds like the regulator is not regulating the voltage to 12 to 14 volts like its supposed to by allowing it to vary from 8V to 24V as if you are doing a test of connecting the armature to field terminals on the back of the generator. It also is not closing the cut out relay to connect the D terminal to the battery terminal to charge the battery.

Just hope the generator didn't get screwed up as I used the shredder on the property and cut 3.5 acres with the tractor running at 1,200 rpm which is 24V coming out of the armature.

Guess I will just throw a new regulator on, polarize the setup and see if all is well. If not guess its time for another $110 generator from Steiners.

(quoted from post at 13:35:42 10/29/17) Warning light is between the "WL" connector of the VR and the "Run" position of the key switch which is directly connected to the hot side of the battery when the key is in the run position, so when the WL terminal of the VR gets close to or equal to the voltage at the hot side of the battery the light will go out. When everything is functioning properly the light going out means that the battery is charging, but when the VR isn't functioning properly it just means that the WL terminal of the VR and battery are at the same voltage.

Click to expand...

eaning that when his generator D output is 24v and battery at 12v, the light sure ought to be illuminated. So, something isn't right in Kansas! If this is really an accurate description, then it isn't wired correctly.