I'll be happy to re-measure any of the components as the camera angles certainly can be deceiving. The thing that bothers me about this matter is the amount of adjustment needed on the wheel cylinders to contact the brake drums for even a light drag. I have to wonder if the brake drums are past the service life spec of 281.7 mm or 11.090"?
Ok everyone here is my update. I have replaced my rear wheel cylinders, brake shoes and brake drums. All of that hoping to resolve the problem that when I adjust the wheel cylinders so there is a slight shoe drag on the drum the adjustment screws are way to far out considering everything is new (see pic above). I got all my parts from Classic Parts in MO. There is certainly something wrong with the either the wheel cylinder, the shoes or the drum. I am truly at a loss in solving this problem. I am down to welding tabs on the shoes where they interface with the adjustment screws to reduce the outward adjustment. Just can't figure out how this was set up in the factory.
I can attest to Jon's attention to detail on his Huck style brake problem. This started out as a parking brake cable installation; however, it quickly turned into a brake problem. In order to get the parking brake functional the brake adjuster dilemma has to be resolved. You can see from the pictures Jon has posted, the amount of adjustment needed on the brake shoes/wheel cylinders to obtain a slight drag on the brake drums. The adjustment appears to be excessive, even with new shoes, wheel cylinders and drums.
About five years ago, I went through the same Huck brake rebuilding process. I replaced all lines, M/C, wheel cylinders, and brake shoes, albeit from another local vendor. The brake drums were good. My parking brake components were long gone. After I acquired the needed parts, all were assembled without any problems resulting in new Huck brakes and a functional parking brake.
Could reproduction parts be an issue, specifically the wheel cylinders? Have any of you Stovebolters experienced this problem? It seems odd to me that all new brake components result in the situation at hand. Let us know, we want to hear from you, thanks!
OK, lets back waaaaay up. What is the history of this truck, specifically the rear axle and all of the parts associated with the brakes? What did you throw out and replace? For the geometry to be so far off for the wheel cylinder adjusters to be turned out so far to make contact with the drum, I have to wonder about the correctness of the parts attached to the bottom pivot pin, or the location of the holes in the backing plate for the two bolts down there.