What was found
THE GEAR WOULD NOT RETRACT. DOWNLOADED FAULT CODES AND RESET COMPUTERS. NO FAULTS REAPPEARED. IAW MM 45-20-00. FOUND HYDRAULIC FLUID LEAKING FROM THE BOTTOM OF THE LEFT RESERVOIR SHUT VALVE. REMOVED AND REPLACED LT & RT MAIN INBD GEAR DOOR PROXIMITY SENSORS, REMOVED AND REPLACED LT BRAKE PRESSURE SWITCH IAW MM 32-10-00-860-801, 29-11-25-900-801, & 32-30-00-720-801. LANDING GEAR RETRACTION CHECK, BRAKE CHECK/LEAK CHECK, HYDRAULIC OPS & LEAK CHECKED GOOD. REMOVED AND REPLACED LT HYDRAULIC SHUTOFF VALVE WITH A REPAIRED UNIT IAW MM 29-14-01-610-801, & 29-12-05-710-801. OPS & LEAK CHECKED GOOD. SERVICED LT HYDRAULIC SYSTEM. OPERATIONAL GEAR SWING TESTED SATISFACTORY, OK FOR SERVICE.