What was found
(CAN) NR 2 HYD FLUID HOT LIGHT ILLUMINATED. THEREAFTER NR 2 HYD PRESS STARTED DECREASING, NR 2 HYD CAUTION LIGHT CAME ON AND HYD QUANTITY DECREASING. RECEIVED AN PTU IAW QRH THEREAFTER HYD QUANTITY WENT BELOW 25 PERCENT & PTU FAIL LIGHT. HYD QTY AND PR WENT ZERO THEREAFTER WE GOT NR 2 HYD ISOLATION VALVE, ROLL SPOILER OTBD NR 2 RUDDER HYD CAME. MAINTENCE ACTION: FIM 29-10-00-810-803 FOLLOWED, METAL PARTICLE OBSEVED IN NR 2 EDP AND PTU CASE DRAIN FILTERS. FLUSHING OF NR 2 HYD SYS C/O IAW AMM 29-10-00-617-803, EDP NR 2 REPLACED, IAW AMM 29-11-01-000/400-801, PTU REPLACED IAW AMM TASK. BLEEDING OF NR 2 HYD SYS C/O IAW AMM TASK 29-10-00-870-802, EDP PTU CASE DRAIN FILTER DP CHECK C/O, IAW AMM 29-16-00-810-806, FOUND SAT. STEERING SYS OPERATIVE AND LANDING GEAR RETRACTION EXTENSION OPERATIVE C/O IAW AMM, FOUND SAT. ALL SYS FOUND SAT RELATED TO NR 2 HYD SYS.