B767-200 FLT CREW HAS FUEL IMBALANCE ENRTE.

Narrative

ACFT WAS LATE TO GATE DUE TO MAINT AND TAXI FROM MAINT HANGAR. ACFT ARRIVED WITH L FUEL INDICATOR PLACARDED INOP AND APU INOP. AT GATE; MAINT PERSONNEL NOTICED FLUID LEAKING FROM L ENG; TROUBLESHOT BY ACTUATING STARTER USING GROUND PNEUMATIC CARTS; AND FOUND ENG DRIVEN HYD PUMP NEEDED REPLACEMENT. DURING MAINT ACTIONS TO R&R HYDRAULIC PUMP; I ACCOMPLISHED EXTERIOR PREFLT INSPECTION; AND MOST OF COCKPIT PREFLT INSPECTION (FMC PROGRAMMING NOT DONE AT THAT TIME). MAINT TESTED LEFT HYD PUMP BY STARTING LEFT ENG. ENG START WAS INITIATED AT 15-16 PSI DUCT PRESSURE; WHICH I MENTIONED TO MAINT TECH AS BELOW OUR FLT CREW MINS. ENG START SUCCESSFUL BUT MAINT PERSONNEL FINISH UP LOGBOOK ENTRIES; AND TAKE STEPS TO COMPLY WITH MEL FOR THE FUEL TANK INDICATOR INOP. THIS INVOLVES; AMONG OTHER THINGS; STICKING THE AFFECTED TANK BEFORE FUELING AND STICKING ALL TANKS AFTER FUELING; TO MANUALLY CONFIRM AMOUNT OF FUEL ON ACFT. FUEL SLIP DELIVERED. REVIEWING FUEL SLIP; STICK READINGS BEFORE FUELING WERE NOTED; NO NOTATION OF STICK READINGS AFTER FUELING WAS MADE. CAPT WAS TOLD BY MAINT THAT STICK READINGS WERE TAKEN; WE DISCUSSED THAT WITHOUT STICK READINGS AFTER FUELING WE HAD NO FUEL TOTAL WITH WHICH TO MANUALLY UPDATE FMC FUEL (REQUIRED). MAINT RETURNED TO ACFT; APPARENTLY MISUNDERSTOOD MEL PROC; CONFIRMED THAT ONLY L TANK HAD STICK READING TAKEN AFTER FUELING. MAINT TOOK STICK READINGS OF ALL TANKS; NOTATIONS PROPERLY MADE TO FUEL SLIP; AND WE DEPARTED. APU PLACARDED AND INOP; L FUEL INDICATOR PLACARDED AND INOP (DUE TO FLUCTUATING READINGS ON TWO PREVIOUS WRITE-UPS); HYD PUMP REPAIRED AND SIGNED OFF. DURING TO AND CLB; L EGT NOTED TO BE 50 DEGS HIGHER THAN RIGHT EGT. LOGBOOK ENTRY MADE AND EVENT RECORD TAKEN. SHORTLY AFTER LEVELOFF; BEGAN NOTICING WHAT WE THOUGHT WERE FLUCTUATING L FUEL TANK READINGS. NOT UNEXPECTED CONSIDERING THE WRITE-UPS AND PLACARD. NOT LONG THEREAFTER; ACFT REQUIRED INCREASING AMOUNTS OF L RUDDER TRIM TO MAINTAIN NEUTRAL AILERON INPUTS. DISENGAGED AP; ZEROED OUT RUDDER TRIM; RIGHT WING DROPS NOTICEABLY WITH NO CONTROL INPUTS; AS THOUGH HEAVIER THAN THE L WING. WHILE ANALYZING THE PROB; CAPT NOTICES THAT CROSSFEED VALVE IS OPEN; APPARENTLY LEFT THAT WAY BY MAINT AND NOT CAUGHT BY US SINCE I HAD ACCOMPLISHED COCKPIT PREFLT PRIOR TO MAINT. CROSSFEED VALVE CLOSED; CONDITION DIAGNOSED AS FUEL IMBALANCE. DECISION MADE TO BURN FUEL FROM R TANK. FUEL IMBALANCE BEGINS TO CORRECT; RUDDER TRIM GRADUALLY REDUCED TO NEAR NORMAL. UNEVENTFUL AFTER THAT.