Did some calculations:
Width : 66.5 inches
Approx axle length : 1/2 of 66.5 inches or 34 inches
Minimum feet needed to pull out axle : 67 +34 = 101 inches or 8.42 feet or 8.5 feet.
Seems like a 10 foot wide garage would just be wide enough to do axle seal and bearing replacement.