05-19-2020, 05:41 PM
Richard, it's been done many times. It works O.K. I still maintain it's overkill. I don't think I'd try it with a kingpin bolt smaller than 1/2". You can get Zerk fittings with either a No. 10-32 or 1/4-28 thread, so the tap drill isn't all that big in either case. Ted