What was found
DURING FLIGHT HEARD A LOUD SQUEALING NOISE FOLLOWED BY A WHITE HYD SYS FAULT. FOLLOWED THE CHECKLIST. WE PULLED UP THE HYD SCHEMATIC, NOTICED THAT THE HYD PRESSURE WAS SLOWLY GOING TO ZERO. THEN GOT A HYD LO PRESS FOLLOWED BY PUSHER FAIL AND BRK FAIL. COMPLIED WITH ALL CHECKLISTS AND BRIEFED FOR A NO HYD, NO BRAKE LANDING. ELECTED TO DECLARE AN EMERGENCY AND DIVERTED. BEFORE LANDING THE FOLLOWING MESSAGES ALSO WERE DISPLAYED BECAUSE THEY ARE HYD OPERATED. GRD SPLR FAIL, A WHITE SPOILER FAULT. AND PUSHER OFF WHICH WAS SELECTED OFF IAW THE CHECKLIST. REMOVED RT EDP HYDRAULIC RESERVOIR MANIFOLD INLET LINE. INSTALLED NEW TUBE ASSY & PERFORMED HYDRAULIC DECONTAMINATION PROCEDURES. REPLACED LT & RT EDPS. ALL OPS & LEAK CHECKED GOOD. ALL MX COMPLETED IAW AMM 20-10-03, 29-12-02, & 29-10-00. PERFORMED THE INSPECTION EMM 05-50-00-210-822. HYDRAULIC PUMP UNSCHEDULED REMOVAL INSPECTION EMM 05-50-00-210-822 ON LT AND RT ENGINES COMPLIED WITH. PERFORMED THE INSPECTION EMM 05-50-00-210-822, NR1 HYDRAULIC PUMP UNSCHEDULED REMOVAL PERFORMED THE INSPECTION EMM 05-50-00-210-822 NR 1 HYDRAULIC PUMP UNSCHEDULED REMOVAL. DUE TO NR 1 EDP RUNNING WITHOUT HYDRAULIC FLUID FOR MORE THAN 1 HOUR, REMOVED & REPLACED NR 1 EDP WITH REPAIRED IAW AMM 29-12-01. OPS & LEAK CHECKED GOOD. PERFORMED THE INSPECTION EMM 05-50-00-210-822, NR 2 HYDRAULIC PUMP UNSCHEDULED REMOVAL PERFORMED THE INSPECTION EMM 05-50-00-210-822 NR 2 HYDRAULIC PUMP UNSCHEDULED REMOVAL. DUE TO NR 2 EDP RUNNING WITHOUT HYDRAULIC FLUID FOR MORE THAN 1 HOUR, REMOVED & REPLACED THE NR 2 EDP WITH REPAIRED IAW AMM 29-12-01. OPS & LEAK CHECKED GOOD.