48 8n wont start- Help

   / 48 8n wont start- Help #1  

presta24

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Jun 4, 2017
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13
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cincy
Tractor
1948 8N, 2021 CK2610
Drove the tractor up to the house one day to take out the trash, it fired up fine as always. Parked it by the house and did a few other things for an hr or so. Went back to take down the trash cans and it wouldn't start. Wont do anything. no clicking doesn't try to turn over, nothing. Haven't worked on this tractor at all so looking for some help. I did take out the battery and give it a full charge. No dice. Its a 6v with the side mount alternator. I'd love to convert to 12v. Per my dad, who I inherited the tractor from, the side mount distributors don't have a conversion kit?

Hate to see her sit. Runs well and is good for a lot. Also keeps hrs off my '21 CK2610, and gas is cheaper lol.
 
   / 48 8n wont start- Help #2  

claggstractors

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Have you checked the ground cable condition and connections?
 
   / 48 8n wont start- Help
  • Thread Starter
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presta24

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Jun 4, 2017
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cincy
Tractor
1948 8N, 2021 CK2610
Have you checked the ground cable condition and connections?
I disconnected it from the push button and tried to ground it out on the frame somewhere to get it to crank. Didnt have any luck. Ground from the battery to started is relatively new.
 
   / 48 8n wont start- Help #4  

claggstractors

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Would need to pull out the manual to go much further for me, been at least 10 years since I've had an 8N in the shop. If I remember right though, the switch on the tranny passes power to the solenoid. Wish souNdguy was still here. He knew the Ford N's like the back of his hand. Anyways, if it isn't even clicking at the solenoid, it nearly has to be a voltage issue. Have you checked the voltage at the battery while trying to crank it?
 
   / 48 8n wont start- Help #5  

John0829

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Nov 17, 2018
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507
Location
Western Ky
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Ford 850 John Deere 1025R
First you do have it neutral, right? Make sure all the connections are clean and tight. Next try by passing the solenoid and see if it cranks if it does the solenoid is bad and you must get a solenoid made for the 8N. They are different in that they are internally hot and the push button switch provides the ground. If you still get nothing jumping directly to the starter, with a known good battery, then it is time to remove the starter for R&R. Since you say it will not click I think your problem is going to in the solenoid or the connections.

Not sure what you mean about the side mount dissy and a conversion unless you mean to EI. They do make them for 12V systems but I do not recommend changing.
 
   / 48 8n wont start- Help
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presta24

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Jun 4, 2017
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cincy
Tractor
1948 8N, 2021 CK2610
First you do have it neutral, right? Make sure all the connections are clean and tight. Next try by passing the solenoid and see if it cranks if it does the solenoid is bad and you must get a solenoid made for the 8N. They are different in that they are internally hot and the push button switch provides the ground. If you still get nothing jumping directly to the starter, with a known good battery, then it is time to remove the starter for R&R. Since you say it will not click I think your problem is going to in the solenoid or the connections.

Not sure what you mean about the side mount dissy and a conversion unless you mean to EI. They do make them for 12V systems but I do not recommend changing.
Thanks for the info. Yes in neutral, the button wont press if in gear. I'll try the solenoid and see where that gets me. All good advise. Really appreciate it. Haven't been able to find a battery (reasonably priced) I have literally been waiting on RK to get them in stock for 2 damn years. May have yo break down and spend $200 on a damn batt.

Why would you not recommend going to 12v?
 
   / 48 8n wont start- Help #7  

gstrom99

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Greene, Iowa
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John Deere 855, John Deere 530R zero turn, Allis Chalmers D17 III, Kubota B1550, Yamaha Timberwolf 250, Husky saws, Shur-Trac flatbed trailer
There is a key to energize the system and allow it to crank, right? Bypass that first. Then, check/clean all connections. Simple, reliable machines. Go ahead an convert it, add electronic ignition too if you want. I did both to my 9n and never had an issue.
 
   / 48 8n wont start- Help #8  

John0829

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Nov 17, 2018
Messages
507
Location
Western Ky
Tractor
Ford 850 John Deere 1025R
I firmly believe in converting to 12V, I just do not believe in the electronic ignition conversions. Converting to 12V is child's play, a GM alternator, a little wire, battery and coil is all that is needed. No need to change the starter, everything else stays the same.
 
   / 48 8n wont start- Help #9  

jwmorris

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Oct 3, 2007
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and you must get a solenoid made for the 8N.

Actually, if you are in a pinch, you can use a regular solenoid but you must NOT bolt the case to metal but Plastic or some other insulator. Where it’s bolted to the insulator, also attach the wire from the push button.

The normal start wire just goes to 12v+. So when the button is pushed the case is grounded and activates the solenoid.


Looks like this. The blue wire going to button and the only way the solenoid is grounded. The little red wire on the starter side goes to the coil, giving it full 12 volts when cranking.
452CD247-F2C4-4D5C-A558-6391F65158DE.jpeg

It looks like it’s bolted to the starter but it’s isolated by 1/2” plastic.

If you get it cranking and want an easy way to clean the points, this method has saved me a lot of time, on the front mount ones.


I do fid it odd that our ‘52 side mount distributor never has points issues but you can almost count on the ‘48 not starting if you have let it sit for a few months.
 
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