I know I am not the sharpest tool in the shed, but I would like to understand why the new spindles I purchased have the oil hole drilled 7/16" from the head of the bolt. This location would deposit the oil in the upper portion of the axle yoke, the spindle should not turn in this location, so why lubricate there. Half of the used spindles in my inventory have grooves descending from the oil hole low enough to supply oil to the upper bronze bushing. The other half match the new spindles. Can someone educate me please?
The hole is so oil gets to the bushing flange where it contacts the yoke.
I think you mean kingpins? I would add some grooves.
You have to consider whether the spindle bolts, not spindles, are genuine Ford, or aftermarket. Ford ground a slot from the oil hole, about an inch down.