Are you asking about the pivot point where the spring attaches to axle? I am restoring a 46 and I had a machinest remove .101 thousands off one side of the clam shell (where the "U" bolts attach to the axle). The axle housing had ovalized from wear. Mine has zrek fittings to lube this area. I found however after reassembly the grease does not appear to get all around that area. Glad I greased it with wheel bearing grease.
