Yes, very interesting.
Given the stated objection to WD pattern was weight, complexity and gear noise of the 4WD drive, I wonder why a C30 modified to use a commercial pattern Timkin (their spelling) front axle wasn't considered. It would have provided many of the features they asked to include on the modified commercial chassis. Hatred of the cramped cab 11/12 (document dated 1941 so before cab 13)?
The phrase "engine driven air pump" could describe the CMP standard pump mounted on the transmission but powered by the engine.
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