Keywords: Hercules HXD engine.jpg Hercules HXD engine cite book TM 9-813 6-ton 6x6 Truck White Corbitt and Brockway 1944 US War Dept 123 1944 US Army PD-USGov Original upload log en wikipedia Hercules+HXD+engine jpg wikitable - 2016-01-10 22 36 592×613× 176190 bytes Sammy D III Hercules HXD engine from US Army Technical Manual 9-813 page 123 US truck engines |