What was found
DURING DRY MOTOR LEAK CHECK OF # 2 ENGINE AFT SUMP CHIP DETECTOR. FOUND LEFT VSV ACTUATOR LEAKING FROM DRAIN MAST. (REF ASA DEFECT 60250576, ASA W/O 1938860, ASA TASK CARD N/R-00001). GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE LEFT VSV ACTUATOR IAW B737-900 AMM 75-31-01-400-801-F00 STEP F (1) TO (6) REMOVED AND REPLACED HIGH STAGE VALVE COUPLINGS IAW AMM 36-11-06 LEAK CHECK DUE COMPLETED #2 ENG VSV (LEFT) ACTUATOR INSTALLATION REF AMM 75-31-01-400-801-F00. VSV ACTUATOR LEAK TEST GOOD, IDLE LEAK CHECK GOOD, ACTUATORS TEST GOOD. ALL LEAKS & OPS CHECKS GOOD. OK FOR SERVICE. ORIG SUB DATE: 1/25/2023