What was found
#2 HYD QUANTITY DROPPED TO ABOUT 30% IN CRUISE AND THEN BOUNCED FROM 0 - 33% FOR ABOUT 20 MINUTES. WAS STEADY AT 30% FOR 20 MINUTES AND AT GATE BEGAN FLUCTUATING AGAIN. M/C / DISPATCH DIRECTED DIVERSION TO PDX. ALL OTHER INDICATIONS NORMAL. REMOVED FROM SERVICE. VERIFIED #2 HYD GAUGE ON MFD READS 45% & #2 OUTSIDE GAUGE READS FULL. ALSO #2 GAUGE ON MFD FLUCTUATES UP & DOWN. REMOVED CLEANED, AND RE-INSTALLED ELECTRICAL CONNECTOR 2931-P15. #2 HYD QUANTITY SHOWED 75% ON MFD. LIGHTLY TAPPED SIDE OF #2 HYDRAULIC RESERVOIR QTY TRANSMITTER. QUANTITY NOW INDICATES 45% ON MFD. CHECKED WIRES FROM #2 HYD RESERVOIR QTY TRANSDUCER CONNECTOR 2931-P15 AND IOM#2 CONNECTOR 3141-P1A-A2 FOR CONTINUITY USING DIGITAL VOM AND SHORTS TO GROUND, SHIELD, & EACH OTHER USING MEGAOHMETER. CONTINUITY CHECKS GOOD AND NO SHORTS FOUND. DEFERRED OF #2 HYDRAULIC QUANTITY INDICATION.