Due to the way the washers are folded over there is a quarter turn of adjustment.
nothing less.
but the folded edges of the washers also prevents it from that adjustment changing.
It's pretty locked in place.

Ive pulled the right side cones to pack the bearings with waterproof grease,
It also acts to retain the lighter oil , such as Phil tenacious , from seeping out
a the same time, in sequence. as I did the Left.