I am not sure if I have a problem yet. I do not have the tractor completely back together but I just want to know what my options are if the injector pump does not function properly. I put new piston rings in, had the head done and had the injectors rebuilt and the diesel shop that did the injectors said that they were pretty bad in leaking out the return line. They said that when they tighten the injectors up the injector pump my not be able to generate enough pressure and that there is no fixing to the pump itself if I run into that situtation. So I am wondering what other guys are doing because there are a fair amount of these pumps out there.  I live in central New York. Thanks