In Reply to: Ford NAA leaky steering box posted by Will on September 02, 2017 at 22:32:23:
Those plates are caps that hold one end of the sector shafts. There is an Oring on them that seals them. Perhaps the orings are damaged or missing. Oring is probably readily available crom CNH for a couple bucks apiece.
To temove the caps, remove the two bolts that hold them in place. Remove the nut on the adjusting screw. Then use a screwdriver to turn the adjusting screw inward. This will push the cap out. You must screw the adjusting screw all the way through the cap.
Then replace the orings.
Reassemble in reverse order. You do NOT screw the adjusting screws in tight. There is a procedure in the I&T manual for adjusting the sectors. Follow it.
Those steering boxes are very, very simple and the repair is very simple. On a scale of 1 to 10 with 1 being changing the oil and 10 being a complete overhaul of the transmission it is about a 1.5 or 2.