What was found
HYD SYSTEM REMAINED AT .25 AND HELD THERE UNTIL GEAR EXTENSION A ND DROP THEN TO .10 AND THAT AND RPR OF HYD LOSS. FOUND LH HYD QTY AT 2 GALS - SERVICED WITH 3 GALS OF HYD FLUID TO RUN ELEC HYD PUMPS FOR TROUBLESHOOTING. NO OBVIOUS LEAK.REMOVED AND REPLACED RH WHEEL PER B757 FAULT TREE 29-11 824, REMOVED AND REPLACED LH WHEEL WELL ANTI SKID SHUTTLE VALVE WELL ANTI SKID SHUTTLE VALVE UP TO AND INCLUDING STEP 5 32-42-97-404-006 UP TO AND INCLUDING STEP 5. ADD EMP:U092861 ADD EMP:368102 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1965862 SN OFF 5527 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1084658 .COMPLETED ADDITION STEPS. LEAK CHECK GOOD.