What was found
#1 HYD ENG PUMP IS LEAKING 1 DROP PER MINUTE. YOU ARE ALLOWED 1 DROP EVERY 10 MINS. LEAKING AT CASE HALF. ENG HYD PUMP NEEDS TO BE REPLACED. GROUNDED - YES. REMOVED POWER FROM A&B HYD SYSTEM PER B737-800 AMM 29-11-00-860-805. DEPRESSURIZATION OF HYD RESERVOIRS, PER AMM 29-09-00-860-802, PULLED C/B B-15 (HYD SYS PUMP DEPRESS VALVE 1) DISCONNECTED ELEC CONNECTOR AND HYD LINES. REF L/P 60181411 FOR DISCONNECTED HYD SUPPLY LINE FROM PYLON UP TOP. REMOVED ENGINE DRIVEN HYD PUMP PER AMM 29-11-11-000-801-001. FITTING NEED TO BE PUT ON NEW PUMP AND TORQUED. INSTALLED NEW HYD PUMP REF AMM 29-11-11-400-801-001 LEAK CHECK PERFORMED, NO LEAKS FOUND.