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For some time, Caterpillar Tractor Co. has been marketing a new transmission control system for wheel-tractor scrapers and off-highway trucks. The new system is composed of an electronic microprocessor control box coupled with an individual clutch modulation hydraulic control. This system has resulted in increased vehicle productivity, improved reliability and serviceability, decreased complexity, and increased commonality of parts. This paper describes the concept, design, and test and evaluation process used to develop the new controls before production.

Caterpillar recently introduced its first backhoe loader - a significant extension to the existing product line of construction equipment. It is a highly versatile machine entering a well-developed marketplace. This paper describes design considerations, the development program, and vehicle design features associated with the 416 Backhoe Loader.