Lesson 2
FIGURE 20. M818 TRACTOR TRUCK.
The M52A2/M818/M931 tractor truck is used as the prime mover for a variety of semitrailers,
including stake-and-platforms, vans, tankers, low boys, and so forth.
M915-SERIES VEHICLES
The M915 series of vehicles is designed for use on all types of roads and limited off-road operation
in all weather conditions. It is powered by an in-line, six-cylinder, diesel engine with a 16-speed
semiautomatic transmission or 5-speed full automatic transmission. It has air-actuated brakes and
hydraulic-assist power steering. The front axle uses leaf-spring suspension, while the rear axles are
mounted together on a bogie-type suspension system. Some models have a nondriven "pusher"
axle, mounted ahead of the rear axles.
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