Inspection of a 904 torqueflite
I just tore down this 904
I’d like to know what kit to buy or what separate parts are needed to refresh this or whatever it needs.
It had no problems shifting before I tore it down. I had recently changed the fluid. There was a lot of black powder in the pan when I pulled it to do the change....
So this time there was very little. It was probably run 50 miles since the change. I tore it down because the torque converter hub was cracked and tore up the bushing it rides on.
I figured if that was bad....what else was bad.
This is the first time I’ve ever taken apart and transmission. I have a general idea of how it works. Some of the forward clutches looks like they were pretty rough compared to what they should look like.
It looks like I was about to lose all my forward gears
I’ve got about 50 pictures I’m going to post of the wear on these parts.
Reverse band.....I don’t even know what this is supposed to look like. Are there any upgrades for this. It doesn’t look as worn as the other band -
Don’t know what this is. It has a thin bushing in it. Should I replace the bushing. It also looks like something sits or turns where it’s shiny -
The reverse clutch packs didn’t have the gouges taken out of them like the forward clutch pack did. This one just has this one spot where it’s gray. That’s gouged in a small place but I’m sure it gets worse after they get beat up like that -
Looks ok. Doesn’t mean it’s good. This is one of the reverse steels. How can you tell if these are good and can be kept. Or bad and need to be replaced?-
A typical example of the reverse clutch. This one is intact -
a picture of the output shaft,......-
One of the reverse steels......the one has the wear marks on it. Those round line Pattern like it needs to be polished -
Another reverse clutch pack. Looks a little worn....you can see where it has penetrated the surface and gotten a little rough in places -
Looks like the reverse Simpson gear set. What are all the gouge marks from. All the rough texture inside there. The gears felt fine. They seem tight and don’t have a loose feel by hand to them. -
A picture of the upper end of the output shaft. Those two polished parts ride on the copper color bushings that are pressed in to the clutch packs or other parts like them-
I left out pictures of the other steels and reverse clutch packs. They look the same as the ones above. No burn marks on them. Very little gouging or friction surface broken down.
The forward gears are nothing like this. Much worse.
All that black stuff I found in the pan before this trans fluid change was friction material.
I changed it because it was leaking badly. The seal on the area where the valve body comes out of the transmission to shift it......went bad. I had to pull the valve body to replace it. As I didn’t drive it much.....it didn’t have time to keep trashing the friction material. It would have with more miles and I would have had more in there until losing all forward gears. I just had a turbo 350 lose all forward gears like this. I’m guessing this is exactly what happened to it
I just tore down this 904
I’d like to know what kit to buy or what separate parts are needed to refresh this or whatever it needs.
It had no problems shifting before I tore it down. I had recently changed the fluid. There was a lot of black powder in the pan when I pulled it to do the change....
So this time there was very little. It was probably run 50 miles since the change. I tore it down because the torque converter hub was cracked and tore up the bushing it rides on.
I figured if that was bad....what else was bad.
This is the first time I’ve ever taken apart and transmission. I have a general idea of how it works. Some of the forward clutches looks like they were pretty rough compared to what they should look like.
It looks like I was about to lose all my forward gears
I’ve got about 50 pictures I’m going to post of the wear on these parts.
Reverse band.....I don’t even know what this is supposed to look like. Are there any upgrades for this. It doesn’t look as worn as the other band -
Don’t know what this is. It has a thin bushing in it. Should I replace the bushing. It also looks like something sits or turns where it’s shiny -
The reverse clutch packs didn’t have the gouges taken out of them like the forward clutch pack did. This one just has this one spot where it’s gray. That’s gouged in a small place but I’m sure it gets worse after they get beat up like that -
Looks ok. Doesn’t mean it’s good. This is one of the reverse steels. How can you tell if these are good and can be kept. Or bad and need to be replaced?-
A typical example of the reverse clutch. This one is intact -
a picture of the output shaft,......-
One of the reverse steels......the one has the wear marks on it. Those round line Pattern like it needs to be polished -
Another reverse clutch pack. Looks a little worn....you can see where it has penetrated the surface and gotten a little rough in places -
Looks like the reverse Simpson gear set. What are all the gouge marks from. All the rough texture inside there. The gears felt fine. They seem tight and don’t have a loose feel by hand to them. -
A picture of the upper end of the output shaft. Those two polished parts ride on the copper color bushings that are pressed in to the clutch packs or other parts like them-
I left out pictures of the other steels and reverse clutch packs. They look the same as the ones above. No burn marks on them. Very little gouging or friction surface broken down.
The forward gears are nothing like this. Much worse.
All that black stuff I found in the pan before this trans fluid change was friction material.
I changed it because it was leaking badly. The seal on the area where the valve body comes out of the transmission to shift it......went bad. I had to pull the valve body to replace it. As I didn’t drive it much.....it didn’t have time to keep trashing the friction material. It would have with more miles and I would have had more in there until losing all forward gears. I just had a turbo 350 lose all forward gears like this. I’m guessing this is exactly what happened to it