New Holland TC45D won't start fuel supply issue

[Happy in NC]

Connect the solenoid wire to a trouble light and it will be easier to trouble shoot. Do you have a service manual or wiring schematic for her. I would guess it uses a relay but it could be just wired.

No. It appears this service manual has no schematics with it. Seems every time I have referred to it it doesn't have what I need Thank god for ya'll
If any one could give me the path from key to solenoid I would again be indebted!

 

[LouNY]

It looks like section 4 of the NH manuals has the electrical, the manual for my NH 8160 is about 4 inches thick.
I did find an electronic down loadable copy for just a few dollars.

This might be a good candidate.
New Holland TC35 TC35D TC40 TC40D TC45 TC45D Manual

 

[thclimer]

This schematic may be from a previous version to your TC45D, but I'd bet the concept of its relays/interlocks could be very close to yours. If you verify a few of the items it may match yours

 

[thclimer]

This may help even more.

 

[Happy in NC]

Both extremely helpful!! Next to get a relay because I think I eliminated the 8a breaker as a cause.
Hate that I threw near $500 at it and it should be so simple.
Live and learn

 

[Seven Gables]

I’ve got a dx35 which I’m quite sure uses the same electrical layout. Before you order that relay have you eliminated the seat safety switch? Easy to do , it’s directly under the seat backrest . Unplug it and jumper a wire across the pigtail connecter. Mines been this way since I bought it used, works fine .
If this seat switch is bad it won’t let power through the relay to fuel solenoid way I’m reading schematic .

 

[dlctcg]

The seat switch and the parking brake switch will not stop the engine from turning over, however they will cause the fuel solenoid to shut off... Make sure you check both of those...

If I'm not mistaken there are only 2 type of relays used in the TC's... Meaning you could temporarily swap out another relay to test... but check / bypass seat switch and the parking brake switch first to eliminate either of those as the issue first.

 

[Happy in NC]

I will have to track the seat switch down as I have never seen it. Bought the tractor used and the previous owner had already disbled it
Are the relays reasonably easy to get too. Is it just the covers under the steering that I need to remove. Nice to know these things before tearing in to something

 

[Mud2Money]

Yes. Just under the covers. Each cover has 2 bolts that you access from under the hood. Then 2 bolts that pinch it together under the column. Glad you isolated the solenoid from the tractor. I figured that might be the issue. It was really sounding like it.

Good job working through it all ! Glad it’s moving in a positive direction.

 

[Mike1955]

Tractor by nets great members came thru on this one! I’m delighted to be a part of this forum