What would cause a plunger on a Massey Ferguson model 3 hay baler to stick?

A plunger on a Massey Ferguson model 3 hay baler may stick due to several factors, including a lack of lubrication, debris or hay buildup in the mechanism, or wear and tear on components like the plunger bearings. Corrosion or rust can also impede movement, especially if the baler has been stored improperly. Regular maintenance, including cleaning and lubrication, is essential to prevent these issues and ensure smooth operation.