Ford NewHolland 3930 wiring

[3930dave]

All that said...... I've never looked at it closely enough to swear that the relay stays continuously engaged during Start. Meaning - it might be possible that the relay briefly drops out (opens) due to voltage dropping because of the starter load ? Esp. if the battery is weak....

Coming at it from another direction..... to what extent can you verify the solenoid itself is working ? Can you measure coil resistance to check for an Open coil ? If you force 12v onto the solenoid (via fused test lead), can you confirm that it is working ? If the output fuel line is accessible, can you verify fuel flow out of the solenoid under a forced ON test condition ?

Rgds, D.

 

[theonlyiceman53]

First of all, thank you for the wiring diagram! I realize this is an older post but I hope someone is still around! I just got my 3930 a few weeks ago and it was hard to start and no dashboard indicators. The wiring diagram was invaluable to troubleshoot the issue!
Thank You!
Bill

 

[dkocian]

I echo the other sentiments. If you are still around, this was a big help. I have other books, but nothing showed the fuel shutoff relay.

Thanks!!!

 

[Packratt]

I couldn't find the wiring diagram for my NewHolland 3930 on line. Once I got it I thought I'd share. My fuel shutoff solenoid wasn't getting any power, and I couldn't locate any info- ended up a $13 fix. Here's the diagram, info page and the supplement they came from. View attachment 279889View attachment 279890View attachment 279891

Does anyone have the supplement this came from in PDF form. The manual I have is older than this supplement and the fuel solenoid is not present.

 

[dpkadams]

Does anyone know how I can get full wiring diagrams for Montana green tractor 3940 HSt, probably 2005 year tractor?

 

[3930dave]

Does anyone know how I can get full wiring diagrams for Montana green tractor 3940 HSt, probably 2005 year tractor?

dpk - also post your question in the Montana section; higher chances of response there.....

Montana

Rgds, D.