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8n problems

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phil SO.IL

05-21-2004 02:00:01

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posted a few weeks ago about my pals n that would only run if he held his hand over the air intake tube.well he finally came and robbed my carb and put it on his and waa laa ran like a champ..... .for a while ....then it lost spark he checked and re checked his electrical system and finally found the ballast resistor was broke in half, replaced it and says it has never run better my question is can a ballast resistor slowly fail over time and hinder performance or is his imagination that its running so good.

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justin

05-21-2004 10:49:50

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Re: 8n problems in reply to phil SO.IL, 05-21-2004 02:00:01

we have an 8N tractor and it will only move in reverse when its cold all the other gears work exept reverse and once it warms up it doesn't move in reverse. so what is wrong with it what kneeds to be fixed or replaced

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uh . . . Dell (WA)

05-21-2004 13:43:58

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Re: Re: 8n problems in reply to justin, 05-21-2004 10:49:50

Justin..... ..may I respectfully suggest that you'd have a better chance of getting an answer to your reverse gear problems iff'n you'd be BRAVE and start your very own thread with an appropriate topic line, rather than sneaking your question inside someone elses completely NON-related thread.

Since yer reverse gear seems to work when held inplace by COLD tranny oil, I'm gonna guess that a snap-on clippie has been busted loose from shifting abuse.

ONLY way yer gonna find out is by performing the dreaded "tranny surgery". Gittoutt yer I&T FO-4 manual for the procedures. ...OR... haulitt into a tractor mechanic$$$..... ..respectfully, Dell the clueless

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Mike McCartney

05-21-2004 09:49:05

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Re: 8n problems in reply to phil SO.IL, 05-21-2004 02:00:01

I just read about your ballast resistor problem and was wondering if that might be my problem. My father inlaws 8n was running fine and we turned it of to put the brush hog on and then it would not start. I checked out the whole system and found we wern't getting any spark. Were is this resistor located. Any help would be greatly appresated.

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Dell (WA)

05-21-2004 10:32:18

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Re: Re: 8n problems in reply to Mike McCartney, 05-21-2004 09:49:05

Mike..... ..the squarecan frontmount ignition systems "infamous ballast resistor" it mounted on backside of the dashpanel under the ammeter..... ..Dell

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Dell (WA)

05-21-2004 07:40:36

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Re: 8n problems in reply to phil SO.IL, 05-21-2004 02:00:01

Phil..... ..one of the original founding N-Board members ustta claim 80% of all N-Carb problems were eventually found in the IGNITION SYSTEM.

Yer friends "hand-chokin" his carb enriched the fuel mixture for eazier burning by weak sparkies. Now that he seems to have "solved" his sparkie problem, his carb "problem" may just be in his head. Howsomevers, he should have been able to accomplish the same thing (enrichment) by pulling a little bitt on his dash mounted choke lever. He may need a carb rebuild or at least adjustment. Quien Sabie?..... ...Dell, the self-appointed sparkie-meister

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JohnMD

05-21-2004 06:12:48

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Re: 8n problems in reply to phil SO.IL, 05-21-2004 02:00:01

The ballast resister on my 49 8N failed. I first noticed that I had difficulty starting when the engine was hot. It also seemed to be slowly losing power. Tune ups etc. did not seem to help. One day it just would not start. I found and replaced a badly corroded ballast resistor and all those problems disappeared. Based on what I found I think a failing resistor would appear as any other bad electrical connection. It would get progressively worst until it stops the tractor from running or effects proformance to the point you need to do something.

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Rob

05-21-2004 02:57:53

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Re: 8n problems in reply to phil SO.IL, 05-21-2004 02:00:01

If nothing else the dirty and corroded terminals on that resister will cause weak spark because it drops voltage to the coil.
I suspect that a guy should replace that resister anytime there is an unexplained coil failure, at least the front mount coil. I'm certain a guy should remake all connections in the ignition circuit, including the resister terminals, whenever replacing a coil.
I've been using a dab of silicone dielectric compound on all my connections for at least three years now, even battery terminals. It's a clear grease that is required on electronic ignition spark plug boots. They have little foil packets on the counter at the auto parts store or you can buy a handy 2oz tube. After three years the connections are still bright and tight with no corrosion.

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George Horn

05-21-2004 08:07:05

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Re: Re: 8n problems in reply to Rob, 05-21-2004 02:57:53

The dielectric can also be purchased in a toothpaste tube sized quantity, it's called Dow-Corning DC-4. Aviation supply houses carry it regularly. It's also recommended for aircraft and automotive spin-on filter gaskets. You'll never have another stuck oil filter in your life. (Ignore the filter mfr's advice to smear grease or oil on the gasket. The only thing they're interested in is keepint the gasket from dislodging during installation...they could care less how hard it is to remove after engine heat cooks that stuff into an adhesive. The DC-4 will never do that, and always stay lubricated. Easy, one-hand filter removal.)

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Really. Rob

05-21-2004 08:25:55

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Re: Re: Re: 8n problems in reply to George Horn, 05-21-2004 08:07:05

That's a great tip, thanks. I'm looking at this tube, it's smaller than toothpaste but it goes a long way. It says it's for outdoor lighting & electrical connections and ignition connections, etc. Prevents arcing and keeps moisture out.
Good stuff. Great stuff if it makes spin-on oil filters spin-off oil filters.

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