Ritchie,
I don't remember seeing a grease zerk on mine, so I can't tell you for sure what that is.
However, I can tell you there's a plug (or should be)on the passenger side of the transmission that you would use to put fluid/gear-lube into the transmission.
Hope that helps some.
You've got me curious now, I guess I'm gonna have to pull up the floor this weekend and see if I can figure out what you're talking about.
