T-89 Again


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By ejstith - 16 Years Ago
Well went to Moultrie Swap Meet yesterday and got another T-89 transmission. This one is from 1968 and is in a lot better shape than the first one I got back in November. Only problem is that this one has a spicer universal joint on the back of the transmission. I'll take the tail shaft from the other one and put on this one. Does anybody happen to have a schematic for a T-85/T-89? I couldn't find one on the net anywhere. In other words, when I take the tail shaft off and break the gears apart is little needle bearings going to go everywhere like they do in a Chevy transmission? .. Thanks .
By ejstith - 16 Years Ago
Amazing!
By Ted - 16 Years Ago
EJ.  I’ve not a clue as to the answer to your particular question and due to the lack of responses, I suspect no one else visiting the site while your question was posted does either.  But ask me a question regarding something I do know and I’ll be happy to respond if several others don’t beat me to it first.
By ejstith - 16 Years Ago
Ted, thanks for responding. My question was, if I take the tail shaft out of the main box will little needle bearings fall out and go all over the place. On a Chevy transmission, which I haven't messed with for years, comes apart needle bearings go everywhere. I have never opened a Ford transmission up other than the side plate. I have to change the tail shaft and housing on this T-89 because the one I got has a spicer U-joint on it. Thanks again ...
By Glen Henderson - 16 Years Ago
Yes, little needle bearings will go everywhere. No big deal, just clean it good and using wheel bearing grease stack the bearing needles back in place and reinstall.
By crenwelge - 16 Years Ago
They made T89 with and without overdrive. If it's an OD, there are lots of small parts to deal with. Warner made lots of variations of everything, and I would be hesitant to try the swap. The T89 is a very good transmission and probably overkill for a y Block. One solution would be to use a drive shaft with a slip joint in it. Then you wouldn't have to take anything apart. Make sure you measure everything including pilot shaft diameter and length. If it came out of A pickup it could be different than what you have now.
By ejstith - 16 Years Ago
Yeah, mine's an overdrive. Thanks for the info on those little bearing going everywhere. I'll be careful taking it apart. I have to change tailshafts because of the spicer u-joint. I'll just be real careful taking it apart. I'm going to have to get the u-joint shaft of one transmission welded to the slip yolk of the other one. The ears are broke on the slip yolk I need. It's going to be an ordeal but do able . Thanks again for the info ..
By Jerome - 16 Years Ago
EJ,
I have one of these in my 56 Fairlane. Here are some helpful links I've collected on the T-85/89's. Enjoy.

The first is an index link.
http://speedprint.com/deves50/overdriveindex.php

Click on the "overdrive rebuild document" for a direct answer to your question about how not to spill those needle bearings.

Here is a link to a much sharper image of the same OD wiring diagram given in the "overdrive wiring document" in the above link.
http://www.classictruckshop.com/clubs/earlyburbs/projects/over/drive.htm

In the following link there is an article posted from Hemmings Motor news on the T85/89 and some of the cars and trucks that it saw duty in.
http://www.ford-trucks.com/forums/53630-which-3spd-ods-w-223-a-3.html

Intrestingly, the Hemmings article missed some of biggest muscle applications of the T85/89's. For example, check out the specs at the bottom of this link for an idea of the Hp they could handle.
http://mecum.com/auctions/lot_detail.cfm?LOT_ID=CH1008-72981

Jerome

By ejstith - 16 Years Ago
Jerome, Thanks a ton. This is the kind of stuff I was lookin' for. Again, the forum comes through. I had one in a '57 back in the 60's. I put a T-10 in it and I guess I just threw that T-85 away ... Not the only dumb thing I did over the years .......... but who knew? Thanks again ..
By ejstith - 16 Years Ago
Well I don't know if any of you have been inside one of these gearboxes before, I suspect somebody on here has, but when I tore T-89 #1 apart the planetary gears were all stripped. Everything else looked OK. Sun gears looked fine. Only thing this causes is that tranny is a parts tranny now, won't be fit for re-sale. I put it all back together on T-89 #2 today and something's not right. Will have to tear into it again tomorrow. Where the od lever his hooked to the cable, that unit won't move. Have done something wrong. Everything else worked fine, so far...
By PF Arcand - 16 Years Ago
EJ: I'm not familiar with the pieces you say will need welding, but I suspect those parts may be carbon or alloy steels. If so, it should be done by a competent welder, using a suitable alloy electrode. Not done with a 110 volt mild steel wire feed or similar unsuitable setup..
By ejstith - 16 Years Ago
It's the yolk on the drive shaft. One T-89 has a spicer U-joint on it. That is one that the unit is bolted to the transmission tail shaft and then the slip joint in on the drive shaft instead of slipping in the transmission it's self. I need to take the part that holds the U-joint and have it welded to the slip yolk because one of the ears are broken off. In other words I have a broke ear. I need to cut the end off of a good one and have it welded on the bad one. Kind of hard to explain with no pictures.
By miker - 16 Years Ago
I needed a calculator to do the math, but 42 years ago when I had an overdrive apart, the local wrench told me to put a wide rubber band around the needle bearings to hold them in. He said it was easier than grease, and that it would break the minute it turned over. Tranny worked great for several thousand miles before I sold the car. Probably more nostalgic than useful, but in those days grease cost money, and rubber bands came on the newspaper.
By ejstith - 16 Years Ago
Well, I used grease so far. That, so far, hasn't been my problem. My problem is that shift rail that goes into that spring and then on into a hole in the tail shaft. I've never been able to post a picture on here but I've got pics on the HAMB. It's just kickin' my butt. I think that hole is slotted and I just must not have the slot lined up. That slide rail should freely move back and forth but it doesn't. I guess I'm going to have to take the shaft out and see what the deal is with that hole. I hate the thought of doing that. I don't know if I can find that freeze plug in the top of the tranny that you have to take out to get to the clip that holds the shaft in .. I'm gonna take a break today, I'll mess with it next week. Ya know, sometimes if ya just take a break the next time you try it it falls into place ..
By Hoosier Hurricane - 16 Years Ago
EJ:

Duhh, I think I finally picture in my mind what you are referring to.  That shaft you are talking about has a very deep flat machined into it, and the half shaft on the shift arm seats in that deep flat so that it can move the shift shaft back and forth.  Make sure that flat is facing the hole that the shift lever shaft goes into.  Also, the shift lever shaft must be out when the tail housing is installed.  That freeze plug is at your local parts house, it is a standard size (I'm thinking 1 1/2") and called a disc type expansion plug.

By ejstith - 16 Years Ago
Thanks John, I have the lever out. I have hassled with this damned thing for 3 days. I took today off, thinking it may be one of those things were you fight it and fight and then take some time off and it just falls into place. Ya know, for the life of me as I look at that set up, I'll be damned if I can understand how that shaft that the over drive lever is hooked to works in that slot on the slider shaft. So, if I fight with it for another day or so and don't get it, I'll take that plug out and then the shaft and see what the problem is with that hole the slider shaft goes into in the tail shaft housing. Thanks again .. This thing, for being so simple, is kickin' my butt!.
By ejstith - 16 Years Ago








Here's a pic of what I'm talkin' about ...This isn't a T-89 but it's laid out the same way.
By ejstith - 16 Years Ago
Well that damned thing kicked my butt for the better part of 3 weeks. It was just a simple tail shaft/housing change but it turned into a bucket of worms. While putting the tail shaft back on apparently the spring on that slider shaft got down in the hole and when I tightened it up it pulled part of the spring into the hole preventing the shaft from going in. After several times of on and off I finally took the shaft out and found the spring problem. Then I put it all back together and forgot to put the spring in. Well, today I finally got it together again and then it wouldn't shift into reverse. I guess that has something to do with the slider shaft because it wouldn't move either. I finally did something (have no idea what) but it all went together and it all works. Now one final question. Does anybody know if the speedometer housing from an older Ford will work with the T-89? I would assume the T-89 and a T-10 would have the same speedometer housing and gear. I put a T-10 in a '57 back in the day but it already had a T-85 in it, which a T-10 was made from. Anybody put a T-85 or T-10 in an earlier Ford and if so how did the speedometer hook up?
By Ted - 16 Years Ago
ejstith (2/27/2009)
Anybody put a T-85 or T-10 in an earlier Ford and if so how did the speedometer hook up?

The T-85 in my ’55 Customline was originally from a ’63 Galaxy with a 352.  For the speedometer in my ‘55, I used a speedometer cable specified for a ’57 Ford with HD overdrive and hooked it up using the ’57 and up nylon speedo gear on the tranny end of the cable.  As an FYI, starting in 1957 the speedometer gears for the cable ends were essentially unchanged for a forty plus year run except for the varying tooth counts.

By Hoosier Hurricane - 16 Years Ago
Ted:

I respectfully would like to make an addition to your statement about the commonality of speedo gears.  I have run into transmissions with the speedo cable hole on the right (passenger) side of the trans, therefore the helix on the driven gear is reversed.  So there are "right" and "left" helix gears out there.  Mixing them up tears up the teeth on the nylon gears.  Don't ask me how I learned this.

By ejstith - 16 Years Ago
So the bottom line is that a speedometer cable/gear housing and gear from my '56 won't work on the T-89? Would be the same as your '55 Ted ...
By Ted - 16 Years Ago
Hoosier Hurricane (3/2/2009)
I have run into transmissions with the speedo cable hole on the right (passenger) side of the trans, therefore the helix on the driven gear is reversed.  So there are "right" and "left" helix gears out there.  Mixing them up tears up the teeth on the nylon gears.

John.  Thanks for the tip on the angle of the teeth on the gears.  Just been lucky up to now and hadn’t got caught by that but will definitely watch out for it in the future.

By Ted - 16 Years Ago
ejstith (3/3/2009)
So the bottom line is that a speedometer cable/gear housing and gear from my '56 won't work on the T-89? Would be the same as your '55 Ted ...

That's right.  Can't speak for a T-89 specifically but starting in 1957, the speedo gear design on the end of the cable changed so the 55-56 gear will not work on a '57 and up tranny.  The speedo head end of the cables are interchangable between 55 and 57 which is why I simply obtained a speedo cable for a '57 car to adapt the T-85 tranny to my Customline.  Hooked right up to the '55 speedometer.  Hope this helps.

By yalincoln - 16 Years Ago
hi, there's a chance that you might not have had the shift solinoid in the case whitch means that the shift dog would be down in the case and not letting it shift. when the solinoid is energized it shifts a dog that locks the shift rail. when you install the solinoid it holds the dog up out of the way. hope i'm not cornfuzzing you, wayne.
By ejstith - 16 Years Ago
yalincoln (3/3/2009)
hi, there's a chance that you might not have had the shift solinoid in the case whitch means that the shift dog would be down in the case and not letting it shift. when the solinoid is energized it shifts a dog that locks the shift rail. when you install the solinoid it holds the dog up out of the way. hope i'm not cornfuzzing you, wayne.




You may be right because when I took the solenoid off it would work. Something had to do with it shifting into reverse too. Anyway, I have no idea what I did but it all fell into place and things work fine now. And Ted thanks for the info on the speedometer cable. Wonder where one would find one? Maybe T-bird has them.