Ford 5000-6610 transmission question

Some transmission gears sub several times. Some have bushings in and some don't. Is one better than the other? Can I use either kind?
 
(quoted from post at 20:52:04 03/03/17) Some transmission gears sub several times. Some have bushings in and some don't. Is one better than the other? Can I use either kind?

Generally only the last is available.
 
Sorry, but that doesn't tell me anything. What is the last type and why did they do this? Looking for some good info.
 
If you want "good info", why don't you give us some better details up front, including maybe even a parts book picture with circles around the gears you're talking about.

That said, an 8-speed Ford tranny has many gears inside of it. The ones that revolve around the front lower shaft all have bushings in them, as best I recall. Just because the parts book doesn't show a bushing doesn't mean it doesn't use one, as Ford has never been big on selling bushings separately, unlike Deere.
 
(quoted from post at 06:33:51 03/04/17)
(quoted from post at 20:52:04 03/03/17) Some transmission gears sub several times. Some have bushings in and some don't. Is one better than the other? Can I use either kind?

Generally only the last is available.

I can't tell you a thing about the gears, but I will tell you about another example. I went for an oil pan gasket for my 9000. The oil pan on the 9000 like some 5000s is structural, it is part of the strength of the tractor. Ford had had problems with these gaskets failing due to movement between the pan and block, and the counterman told me that it had been superseded twelve times, and that the most recent gasket was $86.00! Most manufacturers have a policy of continual product enhancement. This means that when a way is found to make part of their product better, it is usually incorporated into not just new models and production but also into replacement parts for older models. I hope this helps.
 
OK probably not "good info" but here is some better info. I have a customer with a 6610 tractor is looking for a 2nd gear with 43 teeth. He supplied me with part# E6NN7N101BA. His gear has no bushing in the center hole and idles directly on the shaft. I have the same gear from an earlier tractor that has a brass bushing in the center hole. The book doesn't show any bushing I'm sure because they don't supply a new one so it doesn't pay to send a picture. Anyhow it's a tooth problem not the center hole. Looks to me like part# C5NN7N101B subs to C5NN7N101D subs to D2NN7N101A subs to E2NN7N101AA subs to E6NN7N101BA subs to 82987561 which is current number!! I'm not trying to be a smart a$$ all I am trying to find out is if the earlier gear will work or is that not a good idea? Looks like most of the other gears sub a multitude of times as well.
 
OK, I just came back from the NH parts website, and I have a better understanding now of what you're working on here.

If you say you have a "tooth problem", then I would say that those gears would not interchange. Bushing or not, you can't swap these two gears unless the tooth count and tooth profile are identical. If they're not identical (which is what I'm getting from your message), why are you even concerned about the bushing?

Two more thoughts:

1) Ford changed a bunch of the gears around 1968 or so in the 5000 transmission. This was done to reduce noise. I would not use gears from a pre-'68 transmission regardless of how close they looked.

2) Now that I think about it some more, it's entirely possible that the newer transmission gears did not use bushings like the older ones did. This would have to be, in my mind, because the newer ones were all pressure lubricated.
 
As long as it's not from a 1968 or prior transmission, I think you would be just fine. If the gear you wish to put in has a bushing, and the one you're taking out does not, so much the better as far as I'm concerned. This assumes of course that the IDs of the two gears are identical.
 

Asking about 5000 - 6610 parts covers a lot of years and model changes.
That said early 5000's has straight cut gears, when the 7000 came available Ford changed to helical cut gears to handle the higher torque loads which also quieted down the gear noise.
Parts search shows 5000 duel power trans using the same 2nd gear as 7000 indicating they used the same transmission on all duel power 5-7000 series.
2nd gear for 5000 non duel power is # 83960021
2nd gear for duel power models is # 82987561, this is the same 2nd gear used in all 5600, 6600, 5610, 6610 8x2 non synchro trans.

If your working on a non duel power 5000 built before 1/73 you'll need 2nd gear # 83960021, my book doesn't say what gear they used on 73-75 non duel power trans
If your working on anything newer 5600, 5610, ect. it should use 2nd gear # 82987561.

FYI, no 8x2 non synchro non duel power trans is pressure lubricated that I know of.
 

My old book does show that the early 65-9/65 tractors used different tooth count gears for R, 1st and 3rd which also used a different main shaft that 2nd gear meshes to, The updated maim shaft will not work with the old gears in those early models.
 

Asking about 5000 - 6610 parts covers a lot of years and model changes.
That said early 5000's has straight cut gears, when the 7000 came available Ford changed to helical cut gears to handle the higher torque loads which also quieted down the gear noise.
Parts search shows 5000 duel power trans using the same 2nd gear as 7000 indicating they used the same transmission on all duel power 5-7000 series.
2nd gear for 5000 non duel power is # 83960021
2nd gear for duel power models is # 82987561, this is the same 2nd gear used in all 5600, 6600, 5610, 6610 8x2 non synchro trans.

If your working on a non duel power 5000 built before 1/73 you'll need 2nd gear # 83960021, my book doesn't say what gear they used on 73-75 non duel power trans
If your working on anything newer 5600, 5610, ect. it should use 2nd gear # 82987561.

FYI, no 8x2 non synchro non duel power trans is pressure lubricated that I know of.
 
RE: pressure lubrication of non-Dual Power transmissions: I've seen more than one 6610-7610 without Dual Power that had pressure lube going into the front of the trans. See reference #62 at the link below.
Lube manifold
 

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