When you need to adjust the worm bearing end play (there should be none) you will either need a really wide and thick flat blade screwdriver (which is hard to use if the steering box is still mounted in the truck) or a homemade tool. The tool consists of a fairly large nut (wrench size between 5/8" and an inch), a big (probably 2"-3" OD washer), thick enough to be a loose fit in the slot of the adjuster and a welder (like my truck buddy Bill who made mine).
Cut a chunk off the washer that comes close to filling the round-bottom slot on the adjuster. Weld the nut onto the washer. Turn the tool with whatever sized socket fits the nut. Don't forget to back off the lash adjustment before you start.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12 '52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
