SORRY ROB ,, THOSE REAR WHEEL BEARINGS MUST BE DISSASSEMBLED AND PACKED , MOST LIKELY THE CAUSE OF THE LEAK IS THE REAR AXLE VENT TUBE IS PLUGGED AND THE PRESSURE BUILDS UP AND FORCES THE DIFF OIL PAST THE INSIDE SEAL INTO THE BEARING AND WASHES OUT THE ORIG , BEARING GREASE, GENERALLY IT IS JUST ABOUT AS EASY TO GO AHEAD AND PUT NEW BEARINGS AND SEALS IN BECAUSE THE WHOLE THING HAS TO BE TAKEN APART TO PACK THE BEARING ANYWAY, AND YOU NEED A 2 5/16 WRENCH TO BREAK THAT NUT LOOSE AFTER YOU OPEN THE LOCK TAB, THE WAY TO DO IT IS TO TURN THE AXXLE UPSIDE DOWN AND PUT THE NUT IN A VISE AND CLAMP IT , AND WITH A LONG BAR BETWEEN THE WHEEL STUDS BREAK IT LOOSE AND THEN REPLACE THE PARTS AND REASSEMBLE THE THING AND GET THAT NUT AS TIGHT AS YOU CAN, UP WARDS OF 150.FT LBS AND MAKE CERTAIN THAT YOU USE A NEW LOCK TAB , IF THAT NUT COMES LOOSE YOU WILL LOOSE THE WHEEL, THESE ARE RIGHT HAND THREADS I, USE TONS OF THESE THINGS, BE CAREFULL AND MAKE SUE YOU DON,T TURN YOUR WORK BENCH OVER .. YOU COULD MAKE A BAR EASILY , TO DO THIS TAKE A 1 INCH WIDE BY 1/2 IN THICK BAR THAT WILL REACH ACROSS 2 WHEEL STUDS AND DRILL A HOLE FOR EACH STUD TO GO THRU AND THEN TAKE A 1 INCH DIA OLD SOCKET AND HAVE IT WELDED IN THE MIDDLE OF THE BAR STICKING STRAIGHT UP AND NOW YOU HAVE A WAY TO USE A LONG BREAKER BAR AND TORQUE WRENCH TO TAKE THAT NUT LOOSE AND REINSTALL, JERRY