1020 ring gear is it replaceable

old

Well-known Member
So the starter ring gear on this 1020 I am working on has a ring gear that is a bit rough.

Is part of the flywheel or can it be removed and a new one put on??

Thanks
 

I've never changed a ring gear on a 1020 flywheel...however most are replaceable...usually not all that expensive a part although it may take some labor to get the flywheel flopped-out on the floor to change it...

Done quite a few on semi's and old tractors...just don't stick the new one on backwards!
 
I have done a good number of them my self over the year. I did not find new ones on this site and the one on the 1020 flywheel sure does not look it it will come off so that is why I am asking
 

T20088 subs to the part numbers below with A&I number listed also.

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Thought you fellers might need a laugh so I'll tell you how I changed my first ring gear all those decades ago when I was a youngster. Had an old Ford pickup and the clutch went out. Tore in to it and the ring gear was completely shot. I asked Pop how it came off and he said heat. Fired up the bernzomatic propane and heated that sucker for an hour. Called Pop back and he laughed. He said well since you don't have a real torch you'll have to do it like we did in the depression day's - build a fire. I laid out a couple of cement blocks and laid the flywheel on them. Used rich pine for the fire under it and in half an hour it was done. Kind of amazing it didn't warp but the ring expands so quickly the heavy flywheel didn't get hot enough to warp.
 
Just a thought, and I have never even tried this job, so forgive me if I'm dumb. But why go thru all that to remove the thing? Why not just take a grinder / cutting wheel and carefully cut thru it in two places, and there it will drop off. Now putting the new one back on, yes I imagine the proper heat is required.
 
One other thing is if you're proficient you could reverse and cut the engaging bevel. Done it many times. A little acetylene head and it will fall off....or at the cheap rate you provided you could buy a new one....you money your call....
 
(quoted from post at 03:19:02 09/21/16) Just a thought, and I have never even tried this job, so forgive me if I'm dumb. But why go thru all that to remove the thing? Why not just take a grinder / cutting wheel and carefully cut thru it in two places, and there it will drop off. Now putting the new one back on, yes I imagine the proper heat is required.

I usually take the oxy/acetylene torch and trim the old defunct ring-gear paper thin and it will fall off with a couple hammer taps...figure out just how I want the new gear to go on flywheel(which side up)...clamp the new gear with some vice-grips to hold onto...and heat it round and round with the torch until it smokes and smells just so(not nowhere near red-hot!) then plop it on the flywheel and seat it with a brass hammer...May as well have the starter overhauled and re-bendixed too...

You can also just heat the old ring-gear in one spot until it's red-hot and split it with an air-hammer/chisel-bit if you like. However still the new ring-gear will need an even heating until it expands enough to slip over the flywheel....Can be done in mere minutes with the flywheel on the floor
 

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