The Case IH 1690 tractor represents a lineage of durable and reliable agricultural machinery from a manufacturer with a deep heritage in the industry. Designed for a broad spectrum of farming tasks, this model embodies the robust engineering characteristic of Case IH tractors from its production era, likely the 1980s. Its straightforward, functional design prioritizes performance and longevity, making it a dependable workhorse for various agricultural applications. The 1690 is built upon a foundation of proven technology, focusing on essential operational capabilities rather than complex electronic systems, ensuring a direct and efficient user experience. This comprehensive workshop service and repair manual provides detailed guidance for the maintenance and repair of the Case IH 1690 tractor. It covers essential systems including the engine, transmission, electrical system, hydraulics, fuel system, cooling system, brakes, and steering. The manual offers in-depth procedures for routine maintenance, step-by-step repair instructions, overhaul guides, diagnostic information, and detailed wiring diagrams. Aimed at professional technicians, DIY mechanics, and owners, this resource ensures the optimal performance and longevity of your tractor through accurate, manufacturer-level content.