the service manual is poorly written as far as procedures go; it assumes the reader understands far more than is likely, especially 70 years later. there are many steps that are either left out from the description, or given scant detail. same goes for the specifications that are listed; too random, and many are left out, including for differences between the models of the series.
in my opinion, the manual is merely a reference; other sources must be used to augment and complete some of the tasks needed to work on these trucks. additionally, automotive engineering has evolved over 70 years; things change. you criticized my use of non-stepped wheel cylinders because that wasn’t how the engineers designed the truck; however, i’ve put thousands of miles on my 14000 pound gvw truck, hauling multi-ton loads over the last 15 years. the brakes have worked excellent for the duration. real world experience sometimes carries more weight than 70 year old obsolete engineering ideas, including left-hand thread lug nuts.