The way you presented the questions, it didn&#039;t seam to me that you had a manual. I don&#039;t own a tractor like yours so I cannot help. I have run into a problem such as yours on another Oliver though. My final drive was milky and I flushed it by mixing with kerosene, ran around for a short time, then drained. I assumed the water had entered through worn/torn boots. The next spring I took the inspection cover off because the fluid never drained completely and contaminated the new. I hope someone out there can give you a hand. When I can&#039;t figure it out myself and can&#039;t get the answers, I dive into the unit to figure it out for myself. It does make for more work sometimes, but many times I find the actual cause for the problem while doing so. I certainly gain an understanding for the function of the unit by doing so. I think you have to be mechanically inclined to do most anything with these things. Otherwise you may as well have someone else do it for you. A great site for assistance is Larry Harsin&#039;s Ask the Oliver mechanic. Larry is one of the most unselfish people out there, sharing the wealth of his years as an Oliver mechanic with anyone that cares to pose a question to his site. Give him a try, good luck, and Happy New Year!