Ford 550 Loader Backhoe 1975–1978 Parts List

• Original OEM parts catalog for the 1975–1978 Ford 550 Loader Backhoe series, covering all 3-cylinder models including 2WD and 4WD chassis variations
• Features over 800 specific part numbers mapped to exploded-view diagrams to speed up component identification
• Provides extensive visual breakdowns of loader controls, backhoe assemblies, and complex hydraulic lines
• Detailed schematic coverage for the powertrain, front and rear axles, and electrical systems
• Essential reference material to help source the correct replacement components for an upcoming repair
• Covers exact components for Auto-Dig controls, center pivot backhoes, sideshift backhoes, extendable dipsticks, 4-in-1 buckets, ROPS structures, tractor cabs, and air conditioners
• Details specific assemblies including Cessna pumps, Webster pumps, Vickers hydraulic pumps, Motorcraft distributors, Mallory distributors, Holley carburetors, CAV fuel filters, and Simms fuel filters

Assembly and Component Breakdown

Tearing down vintage heavy equipment requires accurate visual references. This 549-page PDF documentation provides exactly that by detailing the mechanical construction of the 3-cylinder series through highly precise exploded-view diagrams and numbered parts lists. Shop mechanics can quickly reference the internal engine block, cylinder head, and crankshaft setups to accelerate visual troubleshooting. The file maps out fuel systems for both gas and diesel units, alongside specific gear configurations for manual reversing and power reverse transmissions. Tracing hydraulic routing is straightforward with comprehensive assembly drawings and hydraulic routing schematics of pumps, control valves, lift cylinders, and piping.

Instead of outsourcing to an expensive dealership, technicians can use these visual step-by-step assembly guides to confidently rebuild the 6x4 manual reversing transmission, overhaul the fuel injection pump rotor, or service the complex 4x4 power reverse torque converter. This visual clarity makes it simple to match lines, seals, and connectors across different production runs, preventing incorrect installations and avoiding costly mistakes. Working on heavy industrial machinery involves significant physical hazards. Always verify system depressurization and secure lifting points before inspecting or removing pressurized hydraulic components based on these manuals.

Technical Specification Preview

Accurate reference data dictates workshop efficiency. This catalog outlines critical information on front and rear axle setups, including wheel weights and tire rim options. You will find exact factory torque requirements for wheel bolts and chassis fasteners used throughout the 1975–1978 production run.

To fully support the electrical systems and mechanical teardowns, the book provides factory wiring diagrams, layout drawings, component charts, component cross-sections, and structural outlines. The manual clearly references fluid capacities and filtration setups tailored to these heavy-duty platforms. Essential values for power steering cylinder seals, electrical wiring hardware, and precise bearing specifications are thoroughly documented. By relying on this OEM breakdown, technicians gain the structural insights necessary to plan a safe, accurate repair based purely on factory references.