if the bands and throttle kick down is adjusted prop the trans can not float and also when you shift into drive 2 or 1 it will stay there no matter what
In response to all of the great postings here, I went online and began looking at transmission coolers. I found two basic types, one is an expanded transmission fluid pan with cooling channels that increases fluid capacity and directs cold ram air through the bottom of the pan.
The second consists of a small cooling radiator and associated connectors, mounts and lines. My motorhome already has this type installed, mounted parallel to the engine radiator at the front.
My question is, and taking into account that the original problem I reported was in all likelihood due to the "float" described as a characteristic of the 727, do I need an additional transmission cooler, i.e., th "pan" type. I am at somewhat of a disadvantage in that my system does not incorporate a transmission temp gauge, so I don't know precisely what is happening inside the transmission. One clue, however, is that when I checked the trans fluid after the "out of gear" experience, the fluid was, as always, clean and clear, indicating to me that it had not overheated and "burnt" or discolored from over-heating.
Disclaimer: I should have mentioned, though I'm sure all of you could tell, that the automatic transmission is the one part of the entire motorhome system that I know the least about.
Thanks again to all who are responding with so many good points.
Sounds to me like you have an external cooler on there now so that should be all you need on a hard long pull trans oil temp can get to 280 to 300 degrees which for short time will not do any harm