What was found
PDX FLIGHT NR 2086 AT COMPLETION OF PUSHBACK UNFEATHERED NR 1 PROP COMPLETED AFTER START FLOW TURNING AUX PUMP ON STANDBY HYD PUMPS ON FLAPS 3. NOTICED NR 2 AUX PUMP INOP BUBLS TEST GOOD. UNFEATHERED NR 2 AND THEN BOTH AUX PUMPS GOOD. FEATHERED NR 2 AND NR 2 AUX PUMP INOP. FUEL TRANSFER RIGHT TO LEFT INOP AS WELL. ALSO, WITH NR 1 PTOP MAX NR 2 PROP FEATHER NR 1 STANDBY HYDRAULIC PRESSURE INOP WITH STANDBY SWITCHES ON. MAINTENANCE INSTALLED NEW LEFT BUSS 2421-K1 CONTACTOR. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.