1970-02-01

The Allison AT-540 Automatic Transmission for Trucks 700110

Market studies show there is a strong need for an automatic transmission for trucks in the 10,000 to 27,500-lb GVW class. After the area of the truck market is defined, the design of a new automatic transmission - the Allison AT-540 - is presented. The transmission's function, arrangement, and features are described.
Also, the development program implemented to qualify the transmission for the market is discussed. Of significant interest is the durability test program, wherein a maximum of experience is obtained during this period of development.
The data accumulated during the development test program indicate the objectives stressed during the design of the transmission - durability, performance, and cost - were fulfilled.

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