Cub Cadet 149 hydrostatic Issue
Hello, I recently joined because I have an issue with my 1973 Cub Cadet 149 hydrostatic lawn tractor. I took it over my grandfather’s house to replace the part where the shifter input goes into the transmission and some seals. We tore apart a donor transmission out of a Cub Cadet 107. It was nearly the same except it did not have ports for the hydraulic cylinder. We took the shifter input part (I do not know what to call it, I drew an arrow in a picture to the part) from the donor transmission and put it in my transmission because they were identical. We replaced some seals and put it all back together. It seemed everything went together perfectly. Almost 2 weeks ago we put it back in the tractor and put 7 quarts of hy-Tran in it. All the linkage was properly connected and none of the pins were sheared from the driveshaft to the pump. We jacked the rear up for a bit to help oil get into the pump. We started it up and it would not move or lift the hydraulic cylinder. We had the top cover off the transmission and could see fluid going through the pump and returning to the transmission. When we put it in gear some bubbles came out. We moved the lever for probably 15 minutes until no bubbles came out, but it still would not move or lift the cylinder. We took out the left relief valve because it was frozen up and replaced it with one that appeared to be identical from the other transmission. When we took the old out, we turned over the engine and fluid seemed to be moving. With it replaced and running, we pushed down both relief valves and the right one came back up and the left one stayed down. I do not know if there is air in the system and if that is why it will not work. We tried again a week later, we jacked the rear up as high as it could go and took out the relief valves and ports and filled them with oil. Still nothing. Does anyone have any ideas? I will not be able to try anything til Sunday when I am over my grandfather’s house again. Thanks for any input! (I can only attach 1 image, but it is probably something I am doing wrong, I was never good with technology).
|