[David_Hayward (RIP)]

Thanks guys! It now makes total sense...these trucks are not 15-cwt. chassis but F30S chassis, part of the original 174 CKD units. The GM front axles may well have been to replace shortages in shipments of components.

Evidence: a note was sent from the DND in Ottawa on 28 March 1940 to the Canadian Mechanization HQ in Dagenham and Southampton, and referred to parts shipped the day before, e.g. to correct production faults and missing parts. Reference was made to 108 jobs that required a “C01Q” part number, i.e. F30S!