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8N electrical help needed

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Woody Woodson

04-26-2003 15:21:45




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Hello all: While happily shredding along last weekend, my 8N basically just stopped. Symptoms appeared related to loss of spark, confirmed by testing plug wires for spark-none found. Pulled primary lead (primary lead off coil) from dist cap, no spark there either. Concluded either coil or wiring was cause of problem. Wiring is quite old on this bird, she is of 1950-52 heritage. Since suspicious lack of current was observed on ammeter while cranking (she usually shows juice), I suspected wiring problem. Replaced entire wiring harness with new aftermarket one from Tractor Supply. Since the new one's wires did not match the old one's color codes, I did my best with my voltmeter and wiring diagram to sort them out. I do believe that I managed to get everything connected correctly, but I may be mistaken! Anyway, when she was all hooked up I pressed the starter button, and the starter spins but will not crank. I know the manual says that when this occurs, you need to look at the starter, but I just can't believe that the starter could have gone bad within 2 hours! It was cranking just fine before I changed the wiring harness! Anyway, I need some help figuring this out. Here's my specific questions, please feel free to chime in with others if I've overlooked something:
1, Could I have mis-wired something, so that the starter is now spinning BACKWARD, and thus not engaging the crank? If so, where should I look?
2, Is there any specific sequence that I should trouble shoot the individual components, or does the simple 'whirring' of the starter tell a distinct tale?
3, Could this possibly be due to the starter solenoid somehow going bad?
Thanks in Advance, Woody

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Dave OH

04-26-2003 20:56:21




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 Re: 8N electrical help needed in reply to Woody Woodson, 04-26-2003 15:21:45  
Something to think about! Ever once in a while my tractor does the same. Reason? A missing tooth in the ring gear. I open the right side (tear drop shaped) inspection plate. Just has one screw and it slips to the side. I insert a screwdriver and turn the flywheel about two inches and it will engage again. Only happens once in a while so not worth splitting the tractor to fix it now.
Dave OH



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Dell (WA)

04-26-2003 15:50:46




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 Re: 8N electrical help needed in reply to Woody Woodson, 04-26-2003 15:21:45  
Woody..... ...think about these answers

1. starter don't care which way wired, ALWAYS turns in same direction

3. If starter solenoid was bad, starter wouldn't whirr

2. simple 'whirring' of the starter tell a distinct tale?".....YES!!!

Starter whirrs because it is getting electricity from battery thru the starter solenoid.

Engine doesn't crank BECAUSE starter bendix gear is not engaging the flywheel ring gear. And while sometimes the starter ring gear comes loose from flywheel the MOST LIKELY PROBLEM is a bad starter bendix. Sometimes the little clippie ring comes loose and parts fall into the bottom of the clutch houseing. Would you believe Ford provided extra storage space for starter parts in tranny housing?

Bottom line, replace your starter bendix with the new improved "clutch" starter gear drive.

TIP: don't pull the 9" long bolts all the way out of your starter because starter will fall apart and is bi*ch of time putting back together, put 5/16 NC nuts on end of starter bolts before you start "rasslin" starter out of tranny housing..... .....respectfully, Dell

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8NFG

04-26-2003 15:33:41




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 Re: 8N electrical help needed in reply to Woody Woodson, 04-26-2003 15:21:45  
Could the battery be dead? Mine also spins when the battery is low, when I jump start with my pickup the starter ingages.



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souNdguy

04-26-2003 22:20:07




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 Re: Re: 8N electrical help needed in reply to 8NFG, 04-26-2003 15:33:41  
Yours is probaly doing that is the starter is not spinning fast enough to throw out the bendix to engage the flywheel..

Soundguy



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woody

04-26-2003 18:09:41




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 Re: Re: 8N electrical help needed in reply to 8NFG, 04-26-2003 15:33:41  
My system is still the original 6V. However, I will check the charge on the battery. Thanks for the tip.
WW



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