Here is an old note I have saved.
"8N JIG AND BOOKLET FOR ADJUSTING THE 8N LIFT______________________________________________________ 8N Ford tractor hydraulic lift adjusting jig and manual for adjusting the lift.----- The manual and the jig are priced at $65.00 including shipping to the USA. Proper adjustment of the 8N lift is next to impossible without the jig.8N FORD TRACTOR LIFT ADJUSTING JIG AND BOOKLET FOR ADJUSTMENT This is something that has been needed for years. It is not an original idea for me. I used to be a mechanic and parts man in a small dealership in Talladega AL. and used such a jig to adjust the 8N lifts. The jig that was supplied to every Ford dealership was cast aluminum and I suppose that most or all of them have been lost or broken over the years because nobody can lay hands on one. I just made up my mind to resurrect the knowledge and so the booklet and jig that I have compiled and fabricated so it can be done in a more practical way. I also include a new cam follower pin at no charge. ( They cost me $.12) I will sell the jig and booklet for $65.00 including shippine to the continetal USA. Send a personal check and it I will ship when it clears the bank Send a Money order and I will ship the next working day. Send toŚ Zane Sherman 2824 Renfroe Road Talladega Al. 35160"
No idea if that is still good or not.