Agreed. And USUALLY you find a pipe plug in the top of the forward fan bearing housing. I was always told Deere intended we remove the plug, install a zerk, grease the bearing, remove the zerk and replace the plug. The explanation I was given was the plug was less apt to introduce dirt into the housing than the zerk.
Don't know if the Engineers in Waterloo actually thought that way or not but that's the story I was told & I couldn't argue with it.