My car had a basic Turbo-Hydramatic 350 3-speed automatic transmission. It seemed to work and shift normally based on the short test drives that we had done but it was leaking a bit of oil. In further examinations we found that the transmission fluid was leaking from the kick down cable hole. Someone had already tried to stop the leak by applying a big ball of silicone around the cable. With poor results. Simple gasket change, thought we! I guess we had not learned yet that nothing is that easy with this car.
We drained the oil, removed the cable and tried to put it back with a new seal. Only the bolt that held the cable to the transmission case didn't go in more than a few threads. We checked again and found that there was a broken bolt inside the hole!
We tested a lot of ways to get the bolt out but they all failed. And it didn't help that the hole was pretty hard to reach while the transmission was under the car. After hours of frustration the only way left to fix it was to drill the old bolt out, make new threads and use a different size bolt. This worked and finally we put the transmission back together with a new filter, new oil, new gasget and new oil pan.
There has been no more leaks from the transmission :)
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