904 Transmission Stopped Going Into Gear

They are easy to rebuild as long as you do 3 things . 1 download all the 727 tqflite rebuild videos from NSW Transmissions either get the sequence here or from Youtube and load them on your laptop. 2 lay a couple of sheets of plywood end to end on the shop floor to stretch the guts out on in order , you pop the pump end and drag the guts out so they spread out in order keeping everything organized .
This way you can replace the internals as units in order while watching the videos , this guy strips and rebuilds a 727 in like 20 minutes , the 904 is the same process .
3 Pester guys like Trailbeast , Moper ,OldKimmer etc...to help you guage clearances and get through any confusion you run into .
Like I said Easy !