This workshop service repair manual covers the Challenger Combine 660-670 series. Designed for agricultural operations, these combines are built with robust engineering to ensure reliability in demanding field conditions. While specific production years are not detailed, the manual addresses the core systems that define the operational capabilities of this equipment, including its diesel engine and hydrostatic transmission, which provide variable speed control for efficient harvesting.

This comprehensive English-language manual is intended to guide owners, mechanics, and technicians through the maintenance and repair of the Challenger Combine 660-670. It provides detailed information on service intervals, fluid capacities, and diagnostic procedures for critical systems such as the engine, transmission, hydraulic system, electrical system, cutting platform, threshing system, and grain handling components. The scope of this manual ensures that users have the necessary resources to keep their equipment in optimal working order.