1963-01-01

Hydraulic Steering System with Follow-up Linkage — Caterpillar 631B Tractor-Scraper 630190

A detailed description of a modified open center full power hydraulic steering system with follow-up correction, used on the 631B tractor-scraper is presented. Diagrams of the hydraulic steering in the neutral position, slow turn, fast turn, and maximum turning effort are shown. Workings of control valve, follow-up linkage, steering gear, cylinders, and interrelated parts are described.
A well-balanced steering system is essential to eliminate operator fatigue and provide a sense of control in the handling of this large equipment.

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