The engine used in the 1/4-ton 4 x 4 Truck is the 4-cylinder, L-head, gasoline-type (figs. 1, 2, and 3), equipped with a counter-balanced crankshaft. The camshaft is operated off the crankshaft through a timing chain (fig. 40). The oil pump and distributor operate off the camshaft.


Fig. 2 – Left View (Driver Side)

Fig. 3 – Right View (Passenger Side)
From TM 9-1803A Engine and Engine Accessories, Willys Overland Model MB and Ford Model GPW 1/4 Ton 4×4 Technical Manual