Can the oil in the trailer hub be changed/ drained without removing the tire?It seems like the allan set srew is extremely tight and is hard to get at with the wheel still on. Can it still be done this way or do you have to take the tire off to do this.
I can do it if need be but would be much simpler if you don't have to remove wheel and then have to retorque etc.
Other than short allan wrenches is there a better tool for this?