What was found
ON INITIAL CLIMB OUT OF KFXE TO KOPF AT 1000 FEET, ENCOUNTERED LOSS OF HYDRAULIC PRESSURE. DECLARED EMERGENCY AND DIVERTED TO LONGER RUNWAY AT KMIA. UPON LANDING BRAKE AIR WAS UTILIZED. WITH NO PASSENGERS ONBOARD, DEPLANED AND ROUTED TO FBO WITHOUT INCIDENT. MAINTENANCE DETERMINED SOURCE TO BE R/H MLG RETRACT HOSE WAS LEAKING. REPLACED R/H MLG RETRACT HOSE AND BOTH ENGINE DRIVEN HYDRAULIC PUMPS AND FERRIED AIRCRAFT TO KFXE. INSPECTED HYDRAULIC FILTERS AND PRESSURE INDICATOR WITH NO DEFECTS NOTED, REPLACED #1 AND #3 HYDRAULIC BRAKE FUSES, SERVICED HYDRAULIC SYSTEM AND EMERGENCY AIR SYSTEM, AND PERFORMED GEAR RETRACTIONS AND BLEED CHECKS AT HOMEBASE.