E40D overhall/servo snap ring and plate missing
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E40D overhall/servo snap ring and plate missing
<TABLE><TBODY><TR><TD vAlign=top width="100%">I've got a 95 F350 4x4 powerstroke diesel with a E40D automatic tranny. I'm rebuilding the trans and when I got to the servo the snap ring and the plate below the the snap ring were missing. I'm wondering why the trans still worked good even though they weren't there. The trans shifts fine. Could it be that they put a shift kit in it last time it was rebuilt? How can I tell if it has a shift kit? I'm concerned that if I put a snap ring and plate in it now that it might not shift right once I'm through rebuilding it. Do you discard the snap ring and plate when you put a shift kit in it, or was it just left out?
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From: Nebraska
It probably depends on the shift kit used as they're all a little different. On most older transmissions it's strictly in the valve body. Has anything else been modified that you can tell?
I guess I'd do some research and figure out exactly what the plate does. What are you using for a manual? Is it possible to get to it and add or remove the plate once the transmission is together and in place?
I guess I'd do some research and figure out exactly what the plate does. What are you using for a manual? Is it possible to get to it and add or remove the plate once the transmission is together and in place?
Lead Driver
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From: Campbell River, B.C.
The servo piston assembly was revised in august of 1995 to eliminate the piston retainer and snap ring. 96 and up transmission cases don't even have the groove machined in the servo bore for the snap ring. If you look at the at the valve body where it lines up with the servo, you will notice a strong "X" profile that is reinforced enough to push against the servo through the seperator plate and hold it in position once assembled. The only real reason for the new design was ease of assembly, and all newer overhaul kits should have the new design.
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Nothing else has been modified, as far as I can tell. It all looks stock to me. Yes, I can remove it by pulling the valve body.
Originally Posted by brown 4x4
It probably depends on the shift kit used as they're all a little different. On most older transmissions it's strictly in the valve body. Has anything else been modified that you can tell?
I guess I'd do some research and figure out exactly what the plate does. What are you using for a manual? Is it possible to get to it and add or remove the plate once the transmission is together and in place?
I guess I'd do some research and figure out exactly what the plate does. What are you using for a manual? Is it possible to get to it and add or remove the plate once the transmission is together and in place?
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The book I'm using doesn't have that revision in it. Are there any more revisions that you know of for this year model?
Originally Posted by David85
The servo piston assembly was revised in august of 1995 to eliminate the piston retainer and snap ring. 96 and up transmission cases don't even have the groove machined in the servo bore for the snap ring. If you look at the at the valve body where it lines up with the servo, you will notice a strong "X" profile that is reinforced enough to push against the servo through the seperator plate and hold it in position once assembled. The only real reason for the new design was ease of assembly, and all newer overhaul kits should have the new design.
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From: Campbell River, B.C.
The book I'm using doesn't have that revision in it. Are there any more revisions that you know of for this year model?
I bought myself an update manual since I am in the process of building myself a tranny for my 86 diesel, and since it was a 92, I wanted to do my homework on it.
For 1995 ish, there were changes made to the solenoid body, a higher capacity pump was introduced, direct clutch piston was changed slightly housing and it goes on and on and.....
But you don't really have to worry about the changes that were made in the hard parts as long as you are reusing the the original parts (and not mix and matching between different model years). The 95 and up units are quite reliable with a mild shift kit installed.
Just to double check, the servo you pulled out should be a single piece design, the old style servo comes in two pieces (the spring is loose), and the piston is also flat across the top, except for where the rod comes through it.
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My servo is all one piece, but the spring is loose. The piston is a cone shaped piston. It doesn't have a plate or a snapring. I'm planning to put it back all the orginal hard parts I took out. I'm going to put new clutches and seals in it. It seems to shift a little stronger than what I'm used to and I like it that way. I don't want it to end up with a soft shift when I'm through. Is there any way to tell if it has a shift kit in it?
Originally Posted by David85
Other changes, uhh, you could say that. The E4OD was a constant work in progress, and ford continued to make changes right up to its phasing out.
I bought myself an update manual since I am in the process of building myself a tranny for my 86 diesel, and since it was a 92, I wanted to do my homework on it.
For 1995 ish, there were changes made to the solenoid body, a higher capacity pump was introduced, direct clutch piston was changed slightly housing and it goes on and on and.....
But you don't really have to worry about the changes that were made in the hard parts as long as you are reusing the the original parts (and not mix and matching between different model years). The 95 and up units are quite reliable with a mild shift kit installed.
Just to double check, the servo you pulled out should be a single piece design, the old style servo comes in two pieces (the spring is loose), and the piston is also flat across the top, except for where the rod comes through it.
I bought myself an update manual since I am in the process of building myself a tranny for my 86 diesel, and since it was a 92, I wanted to do my homework on it.
For 1995 ish, there were changes made to the solenoid body, a higher capacity pump was introduced, direct clutch piston was changed slightly housing and it goes on and on and.....
But you don't really have to worry about the changes that were made in the hard parts as long as you are reusing the the original parts (and not mix and matching between different model years). The 95 and up units are quite reliable with a mild shift kit installed.
Just to double check, the servo you pulled out should be a single piece design, the old style servo comes in two pieces (the spring is loose), and the piston is also flat across the top, except for where the rod comes through it.
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From: Campbell River, B.C.
Originally Posted by jk89cat
yes they do, the torqueshift is primarly a desiel trans, but with the new models who knows what they have up their sleeve
(see sig).
Lead Driver
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From: Campbell River, B.C.
Sounds like the transmission is stock. I think shift kits can be had for as little as $60-70, but don't quote me on that. I would highly recomend putting anything in that would firm up the shifting. Depending on what you are doing with your truck, you may also want to consider an aftermarket cooler, and a temp guage.
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