8n tractor help

Claymadry

New User
I replaced the starter solenoid and now the starter keeps cranking.I hard wired everything together and now it starts but it sounds like the starter is engaged in the flywheel it makes a weird whining noise and dies.is this normal? Also why does the brand new solonoid keep the starter going?I have disconnected the ignition switch and still does it.
 
okay my original solonoid has 2 main post and 1 little post but the new one has two Main post and 2 little post is this what your talking about?
 
The one wire is a 6V. the two small is a 12v. the second small term is for increased volts to the points for starting.Not needed
on a 6V tractor. However,it doesnt sound as if the original(type) system is still in place. Been modified?A lot can be changed
over 60+ years.
 
IIRC,the two solenoids look exactly the same.Go to NAPA and ask for a grounding solenoid. A 'AutoZone",Generic etc. will not work. BTDT
 
I had a rebuilt starter do that; turned out the solenoid piston needed light lubrication to let go & fly back.
 
1. I don't think the term "grounding solenoid" is gonna mean ANYTHING at NAPA, or anywhere else, for that matter.

2. If a more modern solenoid (NOT set up in the old Ford fashion) has been installed, pressing the starter switch will do NOTHING.
 
You got it wired wrong someplace as soon as you let off the sw starter should stop.. and it wont make any funny soundseither are you sure starter is the same as you removed cant be or it would work.
 
If a 12 volt system then it has been modified as Ford did not use a 12 volt system untill 13 years after the last 8N was built on gas tractors. I would not own a N series with 12 volt.
 
You are very likely to have the wrong solenoid you need the 3 wire one not the 4 wire one since the 4 wires ones are likely to be made for a car or truck which will not work on the N series tractors
 
As others have said wrong one.

NAPA # BK S61055

Or



http://www.yesterdaystractors.com/8....htm[url] Right here on this site! Rick
 
Yes your tractor has been modified since when it was new it had a 6 volt system and now a 12 volt one. You need the CORRECT 8N solenoid not the 4 wire ones made for cars and trucks and yes the 6 volt solenoid will work just fine on 12 volts
 
A 3 wire solenoid is internally grounded, [u:381f6004e9]some[/u:381f6004e9] 4 wire solenoids are externally grounded, meaning one small post gets a ground wire.
 
Sounds like your starter is not disengaging . As it has been said , take it off and lightly lubricate the shaft assembly .

The starter button will only work when the gears are in neutral , then all the starter button does is ground out the system . The original solenoid gets it's coil power from the incoming battery cable . Shorting out the small terminal to ground completes the circuit allowing the solenoid to send power through to the starter .

Later model automotive solenoids are grounded by being bolted to the fender well and require a hot wire to energize the solenoid coil , just the opposite of an 8n.
 

One of the old time auto parts stores around here(Malone,NY) had a tester right under the front counter.Hand them your bad solenoid,it got tested and they handed you the correct replacement.They did a lot of Ag. parts though.
 
(quoted from post at 15:03:40 04/27/16) A 3 wire solenoid is internally grounded, [u:7c738ad0f5]some[/u:7c738ad0f5] 4 wire solenoids are externally grounded, meaning one small post gets a ground wire.
ure a lot of incorrect "information" on the internet. :(
 
Alight guys thanks for all the help! I actually got the dang thing fired up and drove it around the pasture.I was messing with the pto and the tractor died and now the dang solonoid is clicking again. I went and got the correct one like y'all instructed me to do.So now what? I went and got another one from a tractor and heavy equipment dealer.Is there another problem?I need to know so I don't fry a 3rd one.
 
I had a situation similar to yours. The starter would stay engaged and I thought it was the solenoid. I was working on the tractor with the hood off and one day I leaned on he dash and it started cranking, I hit the same corner of the dash and it would stop. I was able to duplicate it many times I finally found the problem was the wire at the push button. was shifting back and forth IN the push button and grounding out on something and when grounded out it would crank and stay engaged. I pulled it slightly out of the pushbutton out and epoxied it in that position and I haven't had any more problems. I have a short video but I cannot seem to get it to upload.
 
You missed the point. "A 3 wire solenoid is internally grounded,"......not on his 8N.
 
(quoted from post at 17:39:54 04/28/16) You missed the point. "A 3 wire solenoid is internally grounded,"......not on his 8N.

Listen to what JMOR is telling you. He knows N wiring.
 
(quoted from post at 11:02:18 04/27/16) If a 12 volt system then it has been modified as Ford did not use a 12 volt system untill 13 years after the last 8N was built on gas tractors. I would not own a N series with 12 volt.

Probably half or more of the N series Fords ever built are working just fine with a 12 volt system.

Why wouldn't you own one?
 
(quoted from post at 18:44:28 04/29/16)
(quoted from post at 11:02:18 04/27/16) If a 12 volt system then it has been modified as Ford did not use a 12 volt system untill 13 years after the last 8N was built on gas tractors. I would not own a N series with 12 volt.

Probably half or more of the N series Fords ever built are working just fine with a 12 volt system.

Why wouldn't you own one?

Duh , your flux capacitor will overheat and your muffler bearings will seize up , I thought everybody knew that .
 
(quoted from post at 14:03:40 04/27/16) A 3 wire solenoid is internally grounded, [u:9a4146e412]some[/u:9a4146e412] 4 wire solenoids are externally grounded, meaning one small post gets a ground wire.
Not true on a N tractor.
Starter switch put a ground on the solenoid when pushed.
 
(quoted from post at 23:05:01 04/29/16)
(quoted from post at 14:03:40 04/27/16) A 3 wire solenoid is internally grounded, [u:70946c5f18]some[/u:70946c5f18] 4 wire solenoids are externally grounded, meaning one small post gets a ground wire.
Not true on a N tractor.
Starter switch put a ground on the solenoid when pushed.

You sir are correct.


The misinformation on this forum is simply outrageous.
 

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