Should Coulters On A Ford 101 Plow Have Grease Fittings?

[Utopia Texas]

On the Ford 101 three bottom plow I just bought there are no grease fittings on the coulters. Were they there originally? Would drilling and tapping them for grease fittings be a good idea or is it necessary? The rolling landslide does have a grease fitting. Anyway to find the year made by the 7k serial number? Thanks...

 

[DJ54]

According to the NH parts store exploded view, there is only on type of coulter that has zerks. Hopefully this link will carry through, and you can determine which one's you have. Object moved