Posting it so it can be found when the mothership sinks, I posted onto Rick's original post, because it has the most useful infos
it is titled : Getting parts together to change the shifter seal on the 727
http://www.ifsja.org/forums/vb/showthre ... 9&posted=1
Rick is right, you are better off being ready for the continous dumping of trany fluid after removing the trans filter and loosening the valve body.
PUT THE TRANS IN NEUTRAL, and vehicle on a flat surface with wheel choke
Yes, I bought the tool to extract the shift shaft seal, but the tool did not bite into the interface metal/rubber, so after pounding, using an impact driver to try to drive the f#@er out... it was time to gather buckets and pans... drain trany oil, disconnect the kick down the speed selector rod and the return cooler line in the rear of the trans body so you can move your hands around... it is tight.
When you drop the valve body, a large spring will pop out with its holder - The Accumulator-... which may spring out of sight, it did for me and I had read the TF727 manual, but could not find the accumulator wedged behind the oil catch can....
I did not bother to move the parking rod (could not see the E-clip), so I left the Valve body dangling and drip all it could, while I attended the seal removal, the pick was useless, a 9/16 open end wrench was perfect to pop the seal out from above.
My shift shaft was very oily, no rust, but I still did a rub with 1000 grit wet/dry emery cloth.
Installed the new seal after cleaning, it was tricky as the lack of space give you a poor line of sight... lube the seal and pop the VB back not forgetting the reinstall the accumulator cylinder and its spring. For those doing this, may be new o-rings on the accumulator piston would be a wise choice. Then lifting all 4 wheels on wood blocks would be good too.
The real experience : after adding 3 quarts and idling in neutral, the level was at max and not changing, putting in any gear, there was no motion, such as no fluid, I let it warm a little more... trany temp was 120, and still no motion and fluid still at max...I try to drive around the block, major slippage, and fluid still at high... finally after idling in neutral for another 10min the fluid went down so I could add an another 2 quarts and be back to normal driving conditions.
for better description and photo, check binderplanet
http://www.binderplanet.com/forums/inde ... on.117876/