Steering gear box is leaking from adjustment screw on top. Is there a seal underneath the cover or do I need to swap the whole box out?
** So, I have a donor steering box and I pulled the top off to look around. Would there be issues with swapping the top with the leaking unit on the truck? Is that grease inside on the screw or gunk?

 

So I had this happen twice. One I fixed with a copper sealing washer between the nut and the plate. (you can get them at harbor freight.) The other one had a crack in the plate. Yours looks like you just need a sealing washer. https://www.harborfreight.com/80-pie...ent-67526.html

 

That's exactly what I was thinking too. I have some of those washers laying around, thanks man.