I sorry, I'm not sure what you are asking. What is the "tv linkage"?
I think you are asking is how to adjust the TC (Transfer Case) Linkage.
To adjust the transfer case linkage loosen the bolt located on the rod coming from the 4wd handle. While pushing forward on the bolt area, press backwards on the rod. This will force the handle "down" into the 2wd area and ensure that you have enough throw on the handle to make it into 4LO. Make sure to snug up the bolt.
