What has happened to my flywheel?

pburchett · Mar 9, 2019

What has happened to my flywheel? I was in the process of replacing the clutch in the 640 Ford. Found this. The starter looks good. I have never had a problem with it since I got it in 2004, and my dad has it since 1979 and I never recall any starter problems.
Should I use this one as it has never given a problem or should I look for a used one or can this one be fixed?

RLA · Mar 9, 2019

The Engine will often stop in the place. Thus the starter will engage in the same place.
So you will end up with worn teeth in the same place. To Prevent this from happening to a
ring gear is never shut the engine off. Normal wear condition.

Bob Bancroft · Mar 9, 2019

Isn't the ring gear replaceable? I can't see where it separates. I've not seen one that's not replaceable.

Russ from MN · Mar 9, 2019

I'm pretty sure you can just replace the ring gear, most are just shrunk on. They are available on this site.

SVcummins · Mar 9, 2019

This site has a new ring gear
Untitled URL Link

4520BW · Mar 9, 2019

You need to wait till your wife is not
home and throw the new gear in the oven.
Make sure you lay the flywheel on some
rags and she will never know.

WGM · Mar 9, 2019

What?s to replace? Take the ring gear off, turn it around and put it back on.

SVcummins · Mar 9, 2019

Yes you could just turn the ring gear so the good teeth are where the bad ones are and put it back on

RedMF40 · Mar 9, 2019

I'll be the lone voice of dissent: if it ain't broke don't fix it.

Traditional Farmer · Mar 9, 2019

New ring gear or you'll be tearing it back down pretty soon plus you'll ruin a starter drive too.

Steve@Advance · Mar 9, 2019

That's normal wear, but it is time to replace the gear.

You'll need to remove the flywheel, hammer the old one off.

To get the new one on, heat the gear only, (not the flywheel).

You can heat it with an acetylene or propane torch, or in the oven, or on the BBQ grill. Heat it evenly to about 400*F.

Have the flywheel laying on a firm flat surface, cleaned up and ready to receive the new gear.

Using welding gloves or oven mits, lay the gear on the flywheel. Work quickly as it will cool fast. It should drop on, but have a small hammer ready just in case. It needs to seat fully against the stop flange on the flywheel.

Some gears have a bevel on one side of the gear, some are flat. If flat, it won't matter which way it goes on. If beveled, that side will go to the side the starter gear engages. In your case the bevel will go toward the transmission side.

David G · Mar 9, 2019

Normally I would turn it over, bit on that one, I would replace.

ditchwitch · Mar 9, 2019

You have gone through all the hard stuff getting it apart. I wouldnt cheap out now. Replace the ring gear and replace the starter gear and be
done with it for several years.

grizz02 · Mar 9, 2019

ring gears are 1 piece they are heated then put on flywheel to cool and shrink fit

Den N Ms · Mar 9, 2019

Steve,Great replacement info,Just need to add heat till it turns BLUE not red.Put it on and let the ring gear cool off on it's own slowly.Do not cool it with water as that will cause it not to shrink tight and it will be loose.

rrlund · Mar 10, 2019

I changed the one on my Oliver 1365 so darned quick,it was over before it even started. I laid it on a block,took the air chisel to it and slid it right off. I laid the new one on the flywheel,went around it with the cutting torch and it dropped right down. I tapped it with a small hammer to make sure it was on straight and that was all there was to it. It was over and done with in less than five minutes.

rustred · Mar 10, 2019

if that was the last one in existance you could remove it and turn it in a different spot so the starter engages in better teeth. also grind off the burr's. cant turn that one around because on the engaging side the gears are beveled so the drive engages smoothly. this is typical wear for fords , as the drive is turning before engaging. on chev the drive engages then turns.

gab · Mar 10, 2019

What's a new gear cost, 25 bucks? It's junk replace it now or next month when you need it to start.

jimg.allentown · Mar 10, 2019

From the look of it, it is broke!

gab · Mar 10, 2019

What's a new gear cost, 25 bucks? It's junk replace it now or next month when you need it to start.

pburchett · Mar 10, 2019

Thanks everyone! I did not know that it was a replaceable part. I figured the best I could do was a used one. I will definitely order a new one and replace. Thanks again.

What has happened to my flywheel?

Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Member

Similar threads