Originally Posted by radar
Ok I got her out and apart.

The air checks were all good except the front clutch which just blew air- no clutch apply sound.

I found a couple parts of a sealing ring in the pan- turns out they were off the snout behind the pump. My front clutch piston outer seal actually looked fine. It is flipped down, and not ripped or folded and needed a little pressure to go back home which I did twice inspecting between.

The kolene steels and red fibers saw some heat. The fibers are a little black around the edges and the frontmost steel (not the thick pressure plate) is noticably warped. I think I had some spares left over from the rebuild.

Could that steel sealing ring on the back of the pump be my culprit? The front clutch gets pressure from the reaction shaft right?

Thanks for the help fellas

Radar


Yes you found your problem. If you did not do it cut off some 5/16 threaded rod and screw two short lengths in the case to help you align the pump as you install. Buy some regular trans assembly lube, very thick, coat the rings after you install, it helps keep them from hanging and breaking. Lot of guy now use the teflon type rings, they wear the drum less and seal better at high RPM's Make sure the grooves the rings go into on the pump are not damaged, 727's are prone to wear those grooves, and make sure the bushing in the drum is good. If the bushing is loose the drum will wobble at high rpm's and take out the rings.



https://www.ebay.com/itm/DR-TRANNY-...SSION-ASSEMBLY-LUBE-M465TG-/192450963604

http://coperacingtranscom.ipage.com/?product=727-teflon-sealing-ring-kit