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Ford 861 power master charging issues

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Full Spool
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PostPosted: Sun Jan 20, 2019 9:03 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote


Jumper wire from BAT to ARM on VR
 
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JMOR
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PostPosted: Sun Jan 20, 2019 9:18 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote

Full Spool wrote:
(quoted from post at 13:03:33 01/20/19)
Jumper wire from BAT to ARM on VR
Yours should be a Type-B and what you said BATT to ARM will polarize IF the field contacts in the VR are making contact closed. The more recognized procedure for Type-B is to remove the field wire and connect battery voltage to generator Field terminal and then re-connect field wire.
 
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Apache_58
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PostPosted: Sun Jan 20, 2019 10:03 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote


Having just gone through this same issue on my tractor and successfully fixed it, I would suggest you start with testing the generator as I suggested. That isolates ALL of your wiring and everything else that could be wrong.

It’s easy to do and takes 10-15 minutes. If your generator isn’t producing enough voltage, you can proceed directly to fixing your problem instead on messing around with stuff that’s probably perfectly fine.

“Full fielding” is what they are doing towards the end of that video I linked to.

Get yourself a couple alligator clipped jumper wires, it makes it easy.
 
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Full Spool
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PostPosted: Mon Jan 21, 2019 8:24 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote


I took the generator to the starter shop and the generator tested fine .

Anyone have a wiring diagram for this tractor ? I am going to go over it with a fine tooth comb . Old VR doesnt work and new VR doesnt charge , even after polarizing.
 
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Larry NCKS
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PostPosted: Mon Jan 21, 2019 9:31 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote


Wiring diagrams have been discussed up one side and down the other on this forum. Do a search for 01 AND wiring diagram. They'll pop up. They're also in the Ford Service Manual for 55 to 64 tractors.
 
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Apache_58
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PostPosted: Mon Jan 21, 2019 9:40 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote


Positively identify the field wire at the generator and regulator side of things.

Test your regulator. If you follow this method, you have a couple wires to verify.

https://m.youtube.com/watch?v=tSJxCNLgL2w
 
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JMOR
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PostPosted: Mon Jan 21, 2019 10:22 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote

Apache_58 wrote:
(quoted from post at 13:40:53 01/21/19)
Positively identify the field wire at the generator and regulator side of things.

Test your regulator. If you follow this method, you have a couple wires to verify.

https://m.youtube.com/watch?v=tSJxCNLgL2w
sure not much of a VR test!
 
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JMOR
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PostPosted: Mon Jan 21, 2019 10:31 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote


 
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Full Spool
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PostPosted: Mon Jan 21, 2019 1:51 pm    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote

I followed similar wiring diagrams and still nothing. polarized by hitting BAT and Field. took the generator to a shop and he said it was good and still no charging . Jumped the VR and still no charging and all continuinity test performed passed.
 
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Full Spool
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PostPosted: Mon Jan 21, 2019 1:52 pm    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote

I am throwing in the towel and going 12v. I did the YouTube test and the generator spins and acts as a motor but the generator voltage output is 1.4 volts which doesn’t make since . It should be at least 7.5v.
 
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JMOR
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PostPosted: Mon Jan 21, 2019 2:03 pm    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote

Full Spool wrote:
(quoted from post at 17:52:39 01/21/19) I am throwing in the towel and going 12v. I did the YouTube test and the generator spins and acts as a motor but the generator voltage output is 1.4 volts which doesn’t make since . It should be at least 7.5v.
If towel is thrown, it makes little difference now, but ~1.4V is what you get on residual magnetization, with no contribution of field coil current. It will spin on residual and should slow down when field current is added. If you still want to mess with it, I would connect an amp meter in the wire from battery hot to field and measure current. Expect a couple of amperes. I suspect that you may not have field current. Actually, we don't even know if you have the correct generator for that tractor?
 
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Apache_58
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PostPosted: Wed Jan 23, 2019 10:14 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote

https://m.youtube.com/watch?v=tSJxCNLgL2w[/quote]sure not much of a VR test![/quote]

Nope, just trying to keep it simple.
If the tests had been performed at the generator as outlined in the first video I linked to and the generator made sufficient power, then applying power as shown on the second video would have verified the wiring between the generator and the regulator.

It does not sound like the generator was tested as described in the video, rather it was taken to someone else that said “it’s good”. The lingering question is how good was it?

Mine spun but when full fielded, but only showed minimal voltage that would never climb. $80 and 5 minutes of install time and my new battery was getting the juice it wanted via a replacement generator.

I decided to stick with a generator because Ive had issues with having to rev the engine up to excite the alternator and I didn’t think the old 3 cylinder diesel would do it. Now I just start it up and it works like it was originally designed to do.
 
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Apache_58
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PostPosted: Wed Jan 23, 2019 10:22 am    Post subject: Re: Ford 861 power master charging issues Reply to specific post Reply with quote

[quote

I just now read that the tests WERE performed as described in the Youtube video.

Throwing in the towel?? You just found your problem.
Bad generator. If you have good battery and new regulators...
 
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