Gf2000 input shaft question
 

Hey guys has anyone here replaced or pulled a input shaft out of a gf2000 box?
I haven't touched one yet but about to do it soon and I seen a pic of the input shaft and it has a circling on the outside of the case, do you have to split the case open to replace the input shaft or is it just that circling on the outside?
I think it would have to be split opened but thought I would ask first?
Cheers

Anyone had these boxes apart?