| 摘要 |
A northern freight tractor for hauling large semi-trailers of freight into regions which are inaccessible by highway trucks. The vehicle has front and rear portions connected by an articulating joint for rotation of one portion relative to the other. A fifth wheel is mounted to the rear portion of the vehicle for coupling to a semi-trailer. A plurality of wheels mounted on both sides of the rear portion support the rear portion and the loads applied to the fifth wheel. A removable track is fitted to the wheels on each side of the rear portion. A pair of front dual wheels support the front portion of the vehicle. The vehicle is powered by an engine assembly mounted on the front portion. A drivetrain including a power shift transmission, cross locks and inter axle locks, provides a continuous and locked 4-wheel drive for transmitting torque from the engine to the wheels.
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