Mine is my CaseIH Patriot 4430 sprayer.  Greasing isn't hard.  It just takes time.  Changing engine oil isn't bad but getting the oil up high is a pain.  The oil filter is a pain in the rear to get off and spills oil.  Changing the hub oil is frustrating because nothing wants to breathe.  I need to figure out how to fill from the bottom drain plug.  The worst is the gear increaser.  Its really a two person job.  Take out the sight glass, fill from the top breather tube until it comes out the hole, install sight glass and finish filling.  That's my worst machine.  Nothing hard.  Just time consuming and messy.