8-N ring gear

Break the tractor at the clutch housing.

Remove the flywheel from the crankshaft.

Grind or cut with a hack saw torch a place as far through the ring gear as you can get without cutting the flywheel.

With a large cold chisel finish breaking the ring gear at this point so that it can be removed.

Lay the new ring gear on a couple of bricks etc and heat it with an acetylene torch until it is a gun metal blue in color all around the ring gear.

Grasp the ring gear with a pair of vice grip etc pliers and drop it onto the flywheel with the beveled side of the teeth facing up. Lightly tap it as it cools to assure it is down all the way.

It should fall all the way on the flywheel when it is hot enough un aided. Do not hammer it on or use any force to get it down. If it won’t fall on of it’s own accord it is not hot enough.

When it is cooled it will be tight on the flywheel.
Zane

I have done as mentioned, use a DC electric stick welder to spot the ring gear to the flywheel. Hit it at several evenly spaced locations with a small tack. It will make a problem for the next guy, but if you don't get carried away it can be ground off at a later date.

Book says 350-degrees will do it but some say you need it blue-hot with a torch

Wedge the front axle to axle support so it won't roll when you make the split.