Ring gear installation D6 4R

But first dress off any burs. I think longer bolts would help if you had an air wrench to quickly tighten several of them down and then quickly start the regular length bolts in alternate holes to finish the process.

When it is hot enough, it will slip on like it was never too small, but be ready because it will quickly seize fast . You may need two heating wands and a helper(and asbestos gloves) to get the holes lined up. You could use a temp crayon to check the temp. Make sure that the tapped holes are clean and everything is just right, poor planning does not work well with hot ring gears

Build a circular charcaol fire smaller than Id and larger than OD, use temperature crayon to get it at least 400 degrees, 500 is better. Will slip right on as noted in above post. Be right and ready as it cools it'll shrink tight!
A gas grill will work if you crank it up to full temp also(probably).

Use 2- 3/8 dia by 3or 4" long bolts cut the heads off and taper the ends to make aligning studs .screw them in the flywheel 180 degrees opposite each other ,so that when the gear is hot ,it can be placed on the studs ,and slid down the studs quickly and the bolt holes will be aligned ,and have a hammer ready to finish driving the gear on if its still snug You will need a least a 100s size heating tourch to get enough heat circling around the gear to expand it heat crayon is the best heat indicator ,but I have just spit on the gear as I heated it and watched how fast my spit evaporated to get a indication of how hot the gear was ,not a scentific way but it works .Main thing is you have to work fast when the gear is hot

Charcoal or wood fire,much easier to get it to uniform temperature than with a torch.Also with a little experimentation the spit test gives a good induction of heat.The few I have done just fall on.
Ray

A propane torch will probably not get the ring gear hot enough. Use an oxy-acetylene torch, preferably with a rosebud tip, and keep it moving around the ring gear. When you get the ring gear hot enough it will drop right into place. Be sure it is aligned right and seats fully or you will have a hard time adjusting it. You will not have very much time to get it right.

Thanks everybody. I made a charcoal fire and it worked great. Now trying to budge this heavy flywheel up to the holes...

Make 2 studs ,with 3/4 fine thread bolts ,so you can slide the flywheel on them into place .I have a disfigered thumb finger nail here now from 2 flywheels that got away while trying to place them on crankshafts I finally got smart ,and started making guide studs .much easier ,and safer !