8n starting issue

99 7.3 · Sep 19, 2020

Looking a little bit of guidance/ideas before I tear into my tractor. I was grading my driveway and the engine started to make a knocking noise. Tractor quit. I tried to start it and the starter spins but does not engage flywheel ring. I can put the tractor in gear and the starter will move the tractor. Any ideas?

Bruce (VA) · Sep 19, 2020

It could be that the bendix has dropped into the bell housing.

Pull the starter to find out. And make sure the ring gear is not spinning on the flywheel.

See tip # 36 before you pull the starter.
75 Tips

HarryVanderpool · Sep 19, 2020

(quoted from post at 05:30:07 09/19/20) ..... the starter spins but does not engage flywheel ring. I can put the tractor in gear and the starter will move the tractor. Any ideas?

? ? ?
Both of those sentences cannot be true at the same time.
For the starter to move the tractor IT MUST engage the ring gear.
? ? ?

99 7.3 · Sep 19, 2020

It is true. Starter free spins when trying to start tractor, but
starter will move tractor in gear. It’s odd, but that’s why I’m
asking

99 7.3 · Sep 19, 2020

How does it engage the ring gear to move the starter then? Is there a shaft from the trans to the crankshaft? Does this shaft break occasionally? Just throwing out ideas. Tractor is not modded or anything. It’s converted to 12v & has a different airfilter. That’s it.
I’m dreading splitting the tractor because it has a loader.

Mad Farmer · Sep 19, 2020

(quoted from post at 05:30:07 09/19/20) Looking a little bit of guidance/ideas before I tear into my tractor. I was grading my driveway and the engine started to make a knocking noise. Tractor quit. I tried to start it and the starter spins but does not engage flywheel ring. I can put the tractor in gear and the starter will move the tractor. Any ideas?

Sounds like multiple problems.

What was knocking noise? Is the motor still free? Can you turn it by hand? Pull your plugs and you should be able to turn it using the belt/fan. Did you loose oil pressure?

If starter moves tractor while in gear it is engaging. How did you do this? That is bypass the neutral safety switch.

Blackhole49 · Sep 19, 2020

If the tractor is not "modded" (modified?) in any way, it is impossible for an 8n to move the tractor with the starter. How are you doing this?

99 7.3 · Sep 19, 2020

Ok, I do have a key and push button start. I put the tractor in gear & push my starter button. Tractor moves...

Jim L WA · Sep 19, 2020

Are you sure it's an 8N? Early 9N's had a push button for the starter on the dash as did early Ferguson's. But whatever it is, it sounds like the flywheel is no longer connected to the crank shaft, or the crank shaft is in two pieces. I can understand your problem, with the F.E.L. being on it. But do like the others said, try turning the engine, plugs out, with the belt and remove the starter and try turning the flywheel with a large screwdriver or pry bar.

99 7.3 · Sep 19, 2020

Ok, I do have a key and push button start. I put the tractor in gear & push my starter button. Tractor moves...

99 7.3 · Sep 19, 2020

Ya, it’s an 8n. Both brake pedals are on the right side and it has a 4 spd trans.
I haven't had the opportunity to look at it yet. I was just looking for ideas before I dive into it. I believe it has to be crank or the shaft that connects the two? I don't think it’s the flywheel due to the starter moving the tractor when it’s in gear. I find it hard to believe that it’s the crank, I run synthetic oil and take of it. It never run it above 3/4 throttle and it doesn’t get beat on. However my middle name should be Murphy 🤦🏼‍♂️

99 7.3 · Sep 19, 2020

I have no idea what the noise was. There aren’t any windows
in the block or pan. It was late and I had to pull the tractor
back to the house with my truck. I haven't had the opportunity
to fiddle with it yet. Hopefully soon

R Geiger · Sep 19, 2020

(quoted from post at 14:18:12 09/19/20) I have no idea what the noise was. There aren t any windows
in the block or pan. It was late and I had to pull the tractor
back to the house with my truck. I haven't had the opportunity
to fiddle with it yet. Hopefully soon

t really does not make sense that the starter just spins but will move the tractor when in gear. The starter engages the ring gear with is attached to the flywheel which bolted to the crankshaft, the clutch plate engages the flywheel. do you get my drift? does the fan turn when you are moving the tractor with the starter?

a32vickyhotrod · Sep 19, 2020

If the bolts came out of the flywheel, then the starter will move the tractor if in gear, and not turn over the engine.

a32vickyhotrod · Sep 19, 2020

It is hard to imagine this could happen

Eman85 · Sep 19, 2020

Really dumb question if you activate the starter in gear and make the tractor move does the engine turn while the tractor is moving?

99 7.3 · Sep 19, 2020

Yes, I totally get you. There has to be something broke there
some place. Only issue is if the flywheel bolts came out or the
center of the flywheel is broke you would think if the clutch
was pressed, the flywheel would come out of place?

99 7.3 · Sep 20, 2020

Yes, I totally get you. There has to be something broke there
some place. Only issue is if the flywheel bolts came out or the
center of the flywheel is broke you would think if the clutch
was pressed, the flywheel would come out of place?

a32vickyhotrod · Sep 20, 2020

When you push in the clutch, it pushes against the flywheel, thus keeping it in place.

whaNcock · Sep 20, 2020

Pull the starter like Bruce (VA) suggested so you can look inside the bell housing and actually see what's going on. Use the tip he suggested...I know from experience!

8n starting issue

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