Generator / Regulator question

LDCJerryMN

New User
I own 1963 Oliver 1600 since last spring. I had the generator sent to shop to have it rebuilt and the shop said, my regulator is good. I re-installed the generator and regulator along with new wire connectors, now the dash red lite turn " ON " ....What did i done wrong ? I didnot have the red lite ON before the generator was removed.
I have the Oliver Operator Manual book that shown clearly picture of the wiring diagrams and I don't make mistake ?? Thank you in advance.

The battery has the Negative ground system, 12 Volt.

I see there's two different regulator part # for this tractor, Tell me which one is best one ? and what's the reason
 
I agree with Matt as that is the first thing to do before you start the tractor after the generator was reinstalled. Also any Oliver with a generator is POSITVE ground.
 
The tractor I own since last spring, I realized someone made the change . Since you said, all Oliver with the generator is Postive ground. OK Well, should I switch the battery cables ?

Or I can have the generator go back to the shop to have him doing it be polarized to Negative ground ?

Can I ask you....why did the previous owner made the change of the ground system , is they have a reason to do this or they must be drunk ?
 
You will be suprised how many people are not aware that a tractor with a generator is positive ground. It was an industry standard for years.

I do beleive that around 1965 Delco started to use alternators and switched to negative grounds. I may be wrong on that statement. Maybe the aguculture industries were a few years behind, but I think 1965 is generally the switch over date.
 
The tractor came from the factory configured for positive ground.

They can be changed to negative ground. One prime reason for doing so is to avoid confusion when jumping with a negative ground vehicle.

If it is working with negative ground there is no reason to change it.

One side of charge indicator light connects to on-off switch, other side to armature on generator. With generator charging, 12 volts is applied to both sides of lamp and it goes out.

If lamp stays on when running the generator is not charging or the lamp may be connected to generator field instead of armature.

If it is a Delco generator polarize by momentarily jumping from hot battery to generator armature. At armature touch nut or ring connector, NOT screw threads. If convenient you can jump from regulator BAT to wire going to generator armature.
 
Are you sure about that John? I believe Pops 1650 was a negative ground system with a generator and I know my 1955 is negative ground. Our 88,S88 and the OC-4 dozer are all positive ground.
 
The generator does not care if it is a + or - ground system, the regulator does, that is why it is marked POS if it is original. Me, I would make it Positive ground. For Donald, the 50 series tractors in 1964 came standard with Delco alternators. We had a couple people from Charles City stop in right before the introduction of the 50 series and we were told about the alternators and that they were negative ground. Somewhere years ago we were also told that the government had requested that the alternators would be negative ground because of less 2 way radio interference.
 
The red light " ON " while the engine running, I am aware that it supposed to turn off after the engine start, But it didnot after the rebuilt generator and put it back along with the same old regulator.

Thank you rvirgil for information. You said, I can jump from regulator BAT to wire going to Generator Armature. OK I got it. Now I need to know if I should turn the key "ON" position But not engine running. ? or it should do this while the engine running ? I understood you said, Wire going to armature to the nut instead of the thread. Got it.

I also thank you Jschwiebert for information that you would do to continue with the positive ground. OK I understood but that way I see my tractor that way when I bought it as it's negative ground. And I see the tractor parts catalog shown that the new VR., said that it can be either negative or postive ground.??
 
Polarize with battery connected, key off, engine not running

If you spark wire to armature post threads on generator when polarizing, the resulting arc can damage the threads and make the nut difficult to impossible to get off. (Don't ask me how I know!!)

Regulator may be marked for positive ground, negative ground, or either polarity.

If it's a gas engine, with positive ground the + post on coil goes to distributor, in negative ground the -- post on coil goes to distributor

If indicator light does not go out with engine running and wiring is correct,
1. Ground the Field post on generator. If light goes out you have a problem in regulator side of voltage regulator
2. If light stays on in above test, jumper from generator armature to regulator BAT terminal. If light now goes out you have a bad cut out section of regulator. If light still on you have bypassed the regulator so suspect a generator, wiring or grounding problem.
 
I checked the post on the coil, and the - wire goes to distributor. OK I am going to polarize the generator tomorrow per your instruction. Will let you know how will it get a result. Thank you
 
I would like to say Thank you the guys ( several names ) in the discussion forum.

I got the problem resolved on my 1963 Oliver 1600, the red " AMP " dash light is no longer " ON " after I finally had enough cash to buy got the new volt regulator and polarized the generator to Negative ground along with the new VR. Now the battery is no longer to drain. I am very happy with a helpful information from these guys...... mattwillson, j.schwiebert, hay maker2, rvirgil_KS, donald lehman

Happy New Year 2016 !
a210562.jpg
 

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