I have a 55 Nomad, but I think the wagon is the same just a different length cable. Any way, there are no adjustments. The cable runs through a guide inside the fender then attaches to a spring wound retractor that will help lift the gate. These retractors will rust up and stop working. What is the problem you are having?
Where the tailgate stops is totally dependent on the cable length and/or cable stop. I know the cables are a different length for the Nomads, but I do not know if they are longer. If the cables have been replaced with a longer one, the condition you describe could occur. The end of the cable stops inside the fender, and if that part is broken, bent, etc. it may allow the cable to extend farther than it is supposed to. I have the same problem on my '55 Nomad, but I am a long way from addressing that problem. It is my understanding that the cable reel's job is to keep the cable taut as the tailgate is opened and closed, not to help lift the gate.
A forum community dedicated to 1955, 1956, and 1957 Chevy owners and enthusiasts. Come join the discussion about restoration, engine swaps, reviews, performance, modifications, classifieds, troubleshooting, maintenance, and more! Open to all models including Belair, 210, 150, Sedans, and Nomads.