What was found
AFTER SELECTING GEAR DOWN HYDRAULIC CAUTION LIGHT CAME ON, MAIN ACCUMULATOR LOW, EMERGENCY ACCUMULATOR NORMAL, HYDRAULIC QUANTITY NORMAL NOSE GEAR DOWN, MAIN GEAR NOT DOWN, QRH CHECK LIST ALL NORMAL. SELECTED OVERRIDE MAIN GEAR DOWN AND MAIN ACCUMULATOR NORMAL. MAINTENANCE REMOVED AND REPLACED RELAY 7ML, P/N MS27400-17, HYDRAULIC PUMP FUNCTIONAL TEST GOOD IAW AMM 29-10-00, GEAR EXTENSION AND RETRACTION FUNCTIONAL TEST GOOD IAW 32-30-00.