Starter Ring

I"m going to have to replace the starter ring on my 9n. I haven"t really researched the best way to get at it yet. I was just wondering, is there any thing else that I should take care of while I"m that deep into it?
Thanks, Bryan
 
I chnged mine a few years back. The gear set down in a groove. I had to heat it and press it off. When it came off the gear was all bent and twisted. You you put it back on, you will have to heat it very hot and then spray water on it to get it too shrink tight on the flywheel.

I have changed several case and farmall gears. My 9n was the hardest one to change.
 
Last one I did I put the flywheel in the freezer over night and took the new ring gear in the oven turn it to 500 and let it sit till the oven said it was up to temp. I then pulled the flywheel out of the freezer and set in on the floor in front of the oven and pulled the ring gear out and roped it on the flywheel. It dropped on so easy I thought it was going to fall down to far
 
If you split the tractor to replace the ring gear, check the clutch and pressure plate. Replace the pilot bearing and the throwout bearings and replace the seal in the front of the transmission.

I drilled two holes and then hit it with a chisel and big hammer. broke right off. Heated new one with rose bud torch and slid it right one. one side has bevels on teeth, they are for the starter gear teeth to mesh with. Put on right.
 
You've already received a pretty good list of other chores to take care of while the tractor is apart.

As for the actual ring replacement, many will say heat the ring up in the oven first. That method is not available to me....wife won't hear of it.

I tried heating it with my oxy-acetylene torch, but it's hard to get it uniformly hot....I ended up having one part hot while the other parts got cool.

I finally had good success by building a small fire in the outdoor firepit, then putting the ring in the coals after the fire had burned down some. After about 15 minutes in the fire it was glowing hot all the way around. I picked it out of the coals with a couple of channel-lock pliers and dropped it onto the flywheel.

I've also heard that a gas barbecue grill will work, but I haven't tried that yet.
 
To remove the ring gear I stand the flywheel up in a vise and cut the ring gear with a hacksaw as far as I can without cutting into the flywheel and than use a chisel to split the ring gear. To install the ring gear I hang it on a prybar and go around it with a torch until it juast starts glowing red then drop it on with a pair of pliers. I then use the pliers to spin the ring gear until it shrinks onto the flywheel. This method has been used at the dealership I work at since before I started here in 1979.

Mark
 
Do not put water on a hot ring gear.Cooling it fast will stop the shrinking process.You will end up with a loose ring gear.
 
Just clean everything real good. Set the flywheel on the floor or bench, use your rosebud and heat in circles until it drops on. Or wait until the wife is gone for a bit, and sneak into her oven.... THEN DUCK WHEN SHE FINDS OUT. Do not ask me how I know!!!!!
 
Sounds like your wife must know my wife. I don"t understand why they can"t see the sensibility in using kitchen appliances when rebuilding equipment. I mean it"s a new ring, right? Not like it"s covered in grease already. Oh well.... that probably should be the beginning of a new post.
 
(quoted from post at 03:26:33 04/10/13) Last one I did I put the flywheel in the freezer over night and took the new ring gear in the oven turn it to 500 and let it sit till the oven said it was up to temp. I then pulled the flywheel out of the freezer and set in on the floor in front of the oven and pulled the ring gear out and roped it on the flywheel. It dropped on so easy I thought it was going to fall down to far

Bet your wife liked that act! :lol:
 

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