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8N flywheel teeth no chamfer

S

S10Vette

Member
I pulled my starter out to take a look at the flywheel and clutch (with a bore scope) to see if there was any oiling from a suspected rear main seal leak. All dry, but I noticed that the teeth are chingered up a bit at the leading edge. This is after only maybe 10 start ups with a new starter and ring gear. I bought the ring gear from this site, and from doing a search now it seems some places make flywheels with gear chamfers, but often they are on the wrong side ! I am talking about lead in chamfer, not the slight chamfer you can see on the teeth here which is the same on both sides.

My old ring gear was too worn to tell if it was originally chamfered or not. Was the oem ring gear from Ford chamfered on the teeth ?
43326.jpg
 
(quoted from post at 15:57:28 12/18/16) I pulled my starter out to take a look at the flywheel and clutch (with a bore scope) to see if there was any oiling from a suspected rear main seal leak. All dry, but I noticed that the teeth are chingered up a bit at the leading edge. This is after only maybe 10 start ups with a new starter and ring gear. I bought the ring gear from this site, and from doing a search now it seems some places make flywheels with gear chamfers, but often they are on the wrong side ! I am talking about lead in chamfer, not the slight chamfer you can see on the teeth here which is the same on both sides.

My old ring gear was too worn to tell if it was originally chamfered or not. Was the oem ring gear from Ford chamfered on the teeth ?
43326.jpg
Click to expand...
ooking like they will be soon enough! :)
 
I don't think very many of the new aftermarket ring gears have a
chamfer regardless of tractor brand. A lot of people including
implement dealers just put the old gear on backwards. I witnessed
the JD dealer doing it to a 4020 they traded for.

I have an SC Case that has had a backwards ring gear for 30 years.
Not a single problem yet.
 
S10Vette ,I would run it for several months and see if your graphite rear seal will soak up some oil swell and seal up and slow or stop leaking oil.A graphite seal will take longer to soak up oil than a white seal does.It don't take much oil to leave a 4" spot on the shop floor.All of the N ting gears that I have installed ether had a bevel one one or both sides.But yours looks like it is well on the way to self tapering.
 

Yep, guess I'll just see how it goes, not like I am going to split it and pull it all apart for something that is likely not a problem.

Regarding the graphite impregnated seal, I think you are correct about it expanding a bit, as the oil leak has definitely slowed down. From what I could see (and there is a lot I could not see) I think the oil leak is running down the back of the block and settling at the bellhousing drain hole, so as long as it stays off the clutch I am OK with just putting a drip pan under the tractor. That UV oil dye sure helps as it the oil seeps really "light up" under UV.
 
(quoted from post at 15:38:49 12/18/16) Looks like another almost right Chinese made part.

Dean
Click to expand...

No kidding, what has me more concerned (I won't say "worried") is now that the hardness and alloy may not be up to snuff. Have been reading about some cases of rapid wear on the teeth of chinese sourced ring gears due to poor steel quality and/or heat treat. I would gladly pay many times the price if it meant I did not have to go back into replacing the ring gear too soon.
 
Be prudent... a hand crank drops in between the exh. manifold and the head, handle to the rear... stays there just fine and beats walking home if ya need it...
 
(quoted from post at 18:03:39 12/18/16) Be prudent... a hand crank drops in between the exh. manifold and the head, handle to the rear... stays there just fine and beats walking home if ya need it...
Click to expand...

Good idea, although it would generally be a short walk.

Not stressing over it, just mainly want to share the subject with anyone who may be about to replace a ring gear. If I had read up on it more, I think I would have added (or have a machine shop add) a lead in bevel. I now remember seeing a setup at a local machine shop for doing exactly that about 20 years ago.
 
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