A833OD inspection results... thoughts?
I've never worked on a manual transmission before, so I hope you guys can help me interpret what I found while inspecting this one. I just finished taking a peek inside the A833 overdrive I bought this summer, and I think (hope) that it's in pretty good shape considering it sat for over 20 years. The guy I bought it from said he rebuilt it in '95. All the shift levers moved and locked very smoothly, and the gears engaged nicely too. The side cover took a little convincing to break the seal, but the shift forks slid out easily too.
Overall, the transmission looked to be in pretty good shape. Some of the surface rust is visible in the picture above, but it's all pretty minor, no pitting or anything. The teeth of all the gears are in really good shape, no scoring or chipping or bluing. However, there were still three main concerns: The input shaft has a nice wobble to it, the dog teeth are kind of worn down, and the transmission would make a very soft scraping noise on only part of the rotation as it spun around.
The input shaft would barely touch the bearing retainer collar as I wiggled it, so I think a new input bearing is in order (if it's something else, please let me know!). Third gear was by far the worst. It looks like the dog teeth have absolutely no point to them, which was probably due to the excessive play in the input shaft. I think I'm gonna have to go ahead and get a new input shaft gear, 'cause this one looks like it's toast. Bummer too, because the actual gear teeth are in great shape.
I don't have pictures, but the nicest dog teeth were 4th gear by far. They had a little tiny bit of wear, but still had a good point to them. This next picture is the dog teeth of second gear, and first gear's looked about the same. Sorry for the bad photo, my phone wouldn't play nice with the light, and the gear oil on the teeth make it hard to see.
They didn't have anywhere near as much damage as the input shaft teeth, but they did have some wear on them. More surface rust is visible in this picture, but again there isn't any pitting (the transmission was stored with fluid inside).
The last concern is that soft scraping noise. Basically, as I spun the input shaft, there was about a 80 degree section of the rotation where a soft scraping noise could be heard. It sounded like it was coming from the bottom corner by the cluster gear and reverse. I tried to look, but it didn't look like the gears were contacting the case or wobbling around or anything, so I'm not sure what could be causing it.
Is there anything I missed or should be concerned about? Again, I've never worked on the guts of a manual before, so I'm very green at this. Any advice is appreciated!
I've never worked on a manual transmission before, so I hope you guys can help me interpret what I found while inspecting this one. I just finished taking a peek inside the A833 overdrive I bought this summer, and I think (hope) that it's in pretty good shape considering it sat for over 20 years. The guy I bought it from said he rebuilt it in '95. All the shift levers moved and locked very smoothly, and the gears engaged nicely too. The side cover took a little convincing to break the seal, but the shift forks slid out easily too.
Overall, the transmission looked to be in pretty good shape. Some of the surface rust is visible in the picture above, but it's all pretty minor, no pitting or anything. The teeth of all the gears are in really good shape, no scoring or chipping or bluing. However, there were still three main concerns: The input shaft has a nice wobble to it, the dog teeth are kind of worn down, and the transmission would make a very soft scraping noise on only part of the rotation as it spun around.
The input shaft would barely touch the bearing retainer collar as I wiggled it, so I think a new input bearing is in order (if it's something else, please let me know!). Third gear was by far the worst. It looks like the dog teeth have absolutely no point to them, which was probably due to the excessive play in the input shaft. I think I'm gonna have to go ahead and get a new input shaft gear, 'cause this one looks like it's toast. Bummer too, because the actual gear teeth are in great shape.
I don't have pictures, but the nicest dog teeth were 4th gear by far. They had a little tiny bit of wear, but still had a good point to them. This next picture is the dog teeth of second gear, and first gear's looked about the same. Sorry for the bad photo, my phone wouldn't play nice with the light, and the gear oil on the teeth make it hard to see.
They didn't have anywhere near as much damage as the input shaft teeth, but they did have some wear on them. More surface rust is visible in this picture, but again there isn't any pitting (the transmission was stored with fluid inside).
The last concern is that soft scraping noise. Basically, as I spun the input shaft, there was about a 80 degree section of the rotation where a soft scraping noise could be heard. It sounded like it was coming from the bottom corner by the cluster gear and reverse. I tried to look, but it didn't look like the gears were contacting the case or wobbling around or anything, so I'm not sure what could be causing it.
Is there anything I missed or should be concerned about? Again, I've never worked on the guts of a manual before, so I'm very green at this. Any advice is appreciated!
