When I first purchased my Morgan, I asked the factory about torque and was told just to use the hammer. Similarly, MWS who make the wheels state on their website that there is no specified torque. They suggest a couple of hammer taps whilst wheels are off ground to ensure centralising and another two when on the ground. Any grease is better than none, and I use the same as on my king pins. I find that a liberal coating at the inner end of the splines up over the conical mating surfaces helps prevent those “dunk” noises when changing direction.
