What was found
FL390, RT HYD LOW LEVEL, HYD EICAS MESSAGE CAME ON. QTY SHOWING 24. RAN CHECKLIST. RT HYDRAULIC LOW PRESSURE EICAS MESSAGE CAME ON. RAN CHECKLIST, DECLARED AN EMERGENCY, DIVERTED. HYD FLUID LEAKING FROM THE BELLY. REPLACED CHAFED HYD LINES IN AFT COMPARTMENTS ONLY. CLEANED RESIDUE IN AFT COMPARTMENT. OPERATED AUXILARY PUMP AND CYCLED FLIGHT CONTROLS, NO DEFECTS OR LEAKS NOTED. ALL WORK DONE IAW AMM 20-10-12 AND 20-10-13, REF GAMPS 2507, REV B.