This manual covers the Massey Harris 333 and 444 tractors, specifically focusing on their hydraulic equipment and power steering systems. Produced in the mid-1950s, these tractors represent a significant part of Massey Harris's legacy in agricultural machinery, known for robust designs and reliable performance. The models typically feature diesel engines, manual transmissions, and are built for demanding farm operations. Their engineering prioritizes durability and functionality, making them valuable assets for agricultural work.

The purpose of this English-language parts manual is to provide detailed information for the identification and sourcing of components for the hydraulic and power steering systems of the Massey Harris 333 and 444 tractors. It includes comprehensive diagrams, part numbers, and assembly overviews essential for maintenance and repair. Owners, mechanics, and technicians can utilize this document to ensure accurate part replacement, understand system configurations, and maintain the operational integrity of these vintage agricultural machines.