JD A/4020/4320
New User
I don't know much about my 1949 model A so a little help please. After I replaced the transmission fluid I hear a way more loud humming/what I think to be transmission noise, while I'm driving. It didn't do it before and I filled the transmission from the port under the seat on the powertrol because I thought they were together but now I'm not sure. But the hydraulics still work fine. Idk where the check valve is for the transmission nor the hydraulics. But if I open the plug on the side/top of the transmission or something just about a foot to the right of the pto, it overflows with a tan-ish close to solid liquid. Idk what it is but lmk please. I'd love to know every in and out of this tractor for maintenence thanks.