Grease *is* important (but only a smear) but it doesn't stop splines wearing.
There has to be clearance between the two sets of splines or you would have to
press the wheel on and off. This means that particularly on the back wheels
every time you accelerate and brake the wheel is slipping back and fore and
the faces of the two sets are being banged together. When new this is a tiny
and inaudible amount, but over time the splines become thinned, the flat top
becoming a point, which means the wheel moves move, and the impact starts to
become audible. As time goes by the splines start to lean, particularly on
the fronts, and eventually they will shear off. Grease will cushion the
impact somewhat, but not eliminate it.
PaulH.
----- Original Message -----
Grease is SO important.
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