9n ring gear weld repair?

gary in pa · Aug 18, 2011

I have a 9n with slipping ring gear. ring gear is two years old and was hot mounted. Now it is slipping-motor got hot and ring gear expanded.

can it be welded on through the starter hole?

Anyone have a picture of what it should look like?

My ring gear has flange facing forward. Hard to get at flywhool and impossible to weld. Any chance my repair guy put eh flange on backwards OR reversed the flywheel and put the flange facing front?

I don"t want to have to split it but it just spins the ring gear and flywheels moves a litle by pressure and friction.

Gary

Den N Ms · Aug 18, 2011

Gary ,Your best fix would be splt the tractor and replace it with a new one.If who ever replaced it before got it to hot, or cooled it with water when it was installed is why it is loose.It should only be heated till it turns blue,never red and allowed to cool off slowly.

Ncorrigible · Aug 18, 2011

The only good thing is the second time you do the split is much easier than the first - the third is a piece of cake. After the third you don't even think it is a chore. What will I do first - brush my teeth or split the tractor? Really - it ain't bad.

Den N Ms · Aug 18, 2011

Gary,And while you have it split pull the transmission input shaft ,check the bearing and race for pits and wear and replace that ancient leaking front transmission seal.

trouttman · Aug 18, 2011

(quoted from post at 19:12:14 08/18/11) I have a 9n with slipping ring gear. ring gear is two years old and was hot mounted. Now it is slipping-motor got hot and ring gear expanded.

can it be welded on through the starter hole?

Anyone have a picture of what it should look like?

My ring gear has flange facing forward. Hard to get at flywhool and impossible to weld. Any chance my repair guy put eh flange on backwards OR reversed the flywheel and put the flange facing front?

I don"t want to have to split it but it just spins the ring gear and flywheels moves a litle by pressure and friction.

Gary

Gary, I rebuilt my 2n about 20 years ago, after about 2 years the new ring gear started slipping. Split it tack welded no more problems. With the replacement parts you get today, I would still tack weld it before I put it back together.

trouttman

CJ in Michigan · Aug 19, 2011

Tack it till you need to split it-IMHO.

CJ in Michigan · Aug 19, 2011

You may be able to stake it in 3 places through the starter hole enough to hold it.

Ultradog MN · Aug 19, 2011

You have three options.
1) split the tractor again and replace the ring gear with another of unknown quality.
2) split the tractor and weld the ring gear to the flywheel with 3 or 4 good tacks.
3) pull the starter out and weld the ring gear to the flywheel with about 4 good tacks.
The first two options will take about 5 hours if you are good at wrenching on these things. More if you are not geared up for splits.
The last option will take about 15 minutes.
Guess which option I picked when I had a slipping ring gear.
If you pick option 3 make sure you know how to connect the ground onto the tractor to keep from arcing between your crank and bearings.
I had my neighbor carefully hold the ground clamp to the big nut on the front pulley.
Good luck.

9n ring gear weld repair?

gary in pa

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Den N Ms

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Ncorrigible

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trouttman

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Ultradog MN

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