The M39A2-series has a multifuel engine, manual transmission, and air-assisted hydraulic brakes.
The M809-series has a diesel engine, manual transmission, and air-assisted hydraulic brakes.
The M939-series has a diesel engine, automatic transmission, and air brakes. Also, it has a one-
piece, tilt-forward hood and fender assembly and an improved cab.
Except for the differences listed above, all models are basically the same. The following
illustrations show the M809-series vehicles, but the descriptions apply to all three series.
FIGURE 16. M813 CARGO TRUCK.
The M54A2/M813/M924 cargo truck has a steel cargo bed and may be equipped with side racks,
troop seats, and canvas cover. It is used for carrying cargo or personnel and may be equipped with