In Reply to: Re: water in transmission posted by raski on October 22, 2021 at 06:40:31:
MYTH # 8: If your shifter boot is worn or missing, water will get into the hydraulic sump.
FACT: Contrary to conventional wisdom, not a lot of water gets in the oil from the shifter boot. Of course, if it's bad, replace it, but you get water from the draft control spring & the dipstick. But, most water is just a byproduct of the heating/cooling cycle of the oil. The oil never gets hot enough (like engine oil) to boil off the water and it condenses inside the case. And, even when you arenít operating the tractor, the oil and case heat and cool at different rates, also creating condensation. Look at the picture of the tire. The fluid in the tire is cooling at a different temperature than the outside air, which creates condensation. The same thing occurs with the oil in the case and you get water in the oil as a result.
The purpose of the shifter boot is to keep dirt out of the hydraulic sump. If you look at the description of the part in the Master Parts Catalog, itís called a dust boot.
Having a problem getting that new dust boot on? It will go on easily if you get the correct part. One size does NOT fit the 9/2N as well as the 8N. The part number for the 2/9N boot is 9N7277. The part number for the 8N boot is 8N7277 . And the reason they have different part numbers is because they are different sizes.