9n converted solenoid problem

[Dale Logerquist]

I hope someone can point me in the right direction. I have a 9n ford that has been converted some time ago to 12v. For some reason the solenoid post had melted and caused the tractor not to start. I could jump across the post and start the tractor.

I decided I needed to replace the solenoid and took off the wires took the old solenoid to the tractor supply place and upon returning lost track on how the wires get reconnected.

Please correct me as to what I am doing wrong. I have tried
1) Main pos lead to solenoid along with larger wire from starter switch.
2) Small starter switch wire to smaller post on solenoid
3) Grounded other smaller post on solenoid to tractor
4) Last larger post on solenoid to starter directly

Upon this the tractor starter began to operate with no results by turning the key on or off. I removed the positive cable form the battery to stop the starter from continuing to operate.

WHAT DID I DO -- ANY Sugestions would be greatly appreciated.

Dale

 

[AZJIM]

The other small wire does not go to ground, the push button wire goes to the S post on the solinoid, the other goes to the bat. side of the coil in some cases, hopes this helps Jim

 

[AZJIM]

The other small wire does not go to ground, the push button wire goes to the S post on the solinoid, the other goes to the bat. side of the coil in some cases, hopes this helps Jim

 

[Peter, Covington, LA]

I'm no expert on the 9N solenoid, but I do know about starter solenoids, so I'll try to help you work this out.

The battery should go to one of the large posts on the solenoid, along with the lead to the ignition switch. That seems correct.

The other large post should go to the starter. That seems correct.

Now, let's look at the internals of the solenoid.

The solenoid is a magnetically-operated switch. It gets the magnetism from electricity passing through an internal coil of wire. Normally, the "hot" side of this coil gets its juice from the incoming lead from the battery, and the "neutral" or "ground" comes from a starter switch which grounds that small post.

If there's a second small post, that tells me it's probably a later model solenoid that was arranged to provide 12 volts to the ignition during cranking. In early 12 volt cars, they found that the coils and points suffered when getting 12 volts during normal running, so they put resistors in the line so the ignition normally ran on something less - about 6 volts. But then it was hard to start, so they added the post on the solenoid that provided 12 volts during cranking.

All that aside, it seems to me that your mistake was grounding one of the small posts. That would mean that as soon as you connect the battery, the internal coil in the solenoid would activate, closing the switch, and making a direct path to the starter - continuously. That sounds like what you have.

The post that you grounded, should be grounded only when you are trying to crank the engine. How that is accomplished is a function of how your tractor is built, and I can't help you there, since mine is different.

 

[Dale Logerquist]

Thanks for the comments I thought it may have something to do with that small gounded wire. This tractor has no push button - Just turn the key and start.

The little wire that I gournded was used as a jumper - if not to ground to what other post

 

[Dale Logerquist]

Thanks for the comments I thought it may have something to do with that small gounded wire. This tractor has no push button - Just turn the key and start.
The little wire that I grounded was used as a jumper - if not to ground to what other post and does it matter what post the leads are attached to - The solenoid itself is not marked

 

[JMOR]

There are several solenoid types and people have wired tractors in different ways. I am attaching dwgs of 4 types. From what I've seen in your posts, it looks like you need to start by figuring which of the 4 terminal types you have, then we can work on wiring. If you can figure yours out from these, great, if not try more questions on us.

 

[Jack - Illinois]

I hope yor realize that you have a dangerous tractor with that set up. The original safety gear shift interlock was put on for a reason. It is too easy to stand beside the tractor and start it while in gear. Too many people have been run over with set ups like you have. Bite the bullet and put it back to original with the safety switch. Lot's cheaper and less painfull than getting run over.

 

[Dale Logerquist]

Jack - Thanks for your post but please give me more information on what is missing or how this set up is bad. I purchased the tractor this way and have always started it in the nutral position. However if there is a safer way please let me know
Dale

 

[Dale Logerquist]

Thanks you for your pictures they are really worth a thousand words. I see that the little jumper wire was attached to the main post from the battery. Thanks again.
Dale

Will let you know if it didn't work.

Happy Holidays

 

[old 9]

What year is your 9-N? The very early ones had a starter button on dash.After Henery Ford almost got run over was switched to a safety interlock with the transmission. As far as I know none had a solinoid starter. Do a little research and put her back to stock.
Where are you located? Maybe one of us is close enough to help you out.

Merry Christmas joe

 

[Jack - Illinois]

I am not a 9N expert as I have a 48 8N, but if you have a starter button mounted around the gear shift lever, that should be the original starter button. It has a rod underneath the tranny cover that sits over a plate that is moved by the gear shift lever. Unless the gearshift is in neutral you can not push the button down to engage the starter. Some early model 2N and maybe 9N had different set up and did not have a solenoid. Since you say you had the solenoid I assumed yours had the button I discribed. But here again someone did change something on yours because the original type solenoid has only 2 large terminals and 1 small terminal. This one small terminal is grounded when you push the original starter button. The original solenoid was mounted on the starter and the small screw was in back facing the engine block. If yours is not like this and is the older rod operated type button, then someone else needs to chime in a give you the information as I don't know on them.