Tractor Repair: 5250 powershift, powershift, light flashes

Question
I have a 1992 5250 with 9500 hours.  Runs good for the first hour baling then kicks out in first and the check transmission light comes on whenever I stop to tie. I can clutch and shift into neutral and nothing happens.  If I shift to 2nd it will move, but if I drop to first it kicks out. This happens in all four gears.
Any help would be appreciated.

Answer
Hello,

  When it happens, you have to hold the clutch pedal down and count how many times the transmission light flashes.  That will be a fault code to help you narrow it down.  It is most likely a bad pressure pressure switch, that is the most common problem.