Hydro-gear pump servicing
I've been barnstorming around You-tube and the forum's archives regarding a specific transmission I'd like to drain and fill.
From a circa 2004 Cub Cadet 1517...It is one of the dreaded non-serviceable ones. Hydro-gear 618-0667 (or 311-0710 apparently). Both numbers are on the sticker.
I've found (by sticking my head underneath the frame) that this pump has a small "expansion tank". It seems to have a breather cap on it that is about the size of a pencil eraser. It seems loose but is not threaded onto the tank.
The simple questions to start: Upon removing the transmission, do I flip it and drain it thru the expansion tank? Would it then refill the same way? I don't remember seeing anything when searching the forums (or elsewhere) about this tank. It does makes some sense as that is (mostly) how a radiator overflow works. Last question for now: Is there any definitive way to know what fluid to refill with? Synthetic makes sense, but...
Thanks for whatever help you can provide!