I recently purchased one of the C- clamp type tools for installing ball joints, etc. I tried installing new ball joints in my steering knuckles and eveything went OK except one little problem. I can't seem to get them seated far enough to get the snap ring on. I have three different repair manuals, Chilton's, Haynes, and a Ford shop manual. The Chilton's book is the only one that makes reference to the snap ring. My question is , has anyone else run into this ? Have you not been able to get the ball joints seated deep enough to get the snap ring on ? And, how important is the snap ring if Ford doesn't mention it in their service manual ? Sorry for all the questions , but I want to be sure I get this right . Any help on this will be appreciated. Thanks, Sam