1975 Ford 550 Tractor Loader Backhoe Parts Catalog
Complete parts reference for Ford 550 Tractor Loader Backhoe including engine, transmission, hydraulic system, and electrical components. Publication FTO-17242 provides part numbers, descriptions, and specifications for all 550 models.
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Models Covered & Key Technical Specifications
Ford 550 Tractor (FTO-17242) — 1975 Commercial Certified Guide | 550 Series Division.
- Calibrated Locking Torques: 113 N·m (83 lb-ft) is established at the transmission shaft fastening requirement Margin.
- System Containment Volume: For hydraulic reservoir operation, 17 L (4.5 gal) dictates the total system capacity Protocol.
- Published Clearance: Relief valve setting corresponds to 1750 P.S.I. (12,068 kPa) maximum system pressure Architecture.
- Authorized Heat Tolerance: Battery electrical rating yields 138 Amp-hour capacity at operating standards Norms.
- Core Weight Data: The alternator assembly reaches 51 Amp maximum continuous output Bounds.
- Standard Threaded Fastener Data: Front wheel rim size is set to 5.50 x 16 inches nominal dimensions Topology.
Professional Workshop Service Manual & Technical Specifications
Precision Operations Field Manual: Backhoe Loader Essential Spare Parts Reference: Ford 550 Tractor, Loader & ВАСКНОЕ Parts Catalog 1975 Factory-Standards
Product-Line: Ford 550 series (Tractor, Loader, Backhoe, 6x4 variants, Torque Converter, Gasoline, Diesel) // Component-Focus: Hydraulic Systems, Engine, Transmission, Electrical subsystems Logic // Assembly-Group: Complete factory-specifications and OEM part identification documentation.
| Assessment-Element | Diagnostic-Logic | Architecture |
|---|---|---|
| Wheels & Suspension | Front and rear axle assembly documentation | Standard and oversized weight configurations available |
| Brake Systems | Dual-circuit hydraulic controls and emergency backup systems | Handbrake and parking brake cross-shaft assemblies |
| Power Steering | Pressure-regulated system with manual override capability | Pump, motor, cylinder, and control valve assembly details |
| Hydraulic Systems | Multi-spool control valves with anti-cavitation relief | Transfer pump, pressure management, return filtration |
Following OEM groupings, the manual includes Wheels documentation that references front and rear assembly variations, Brakes that covers both service and parking configurations, Steering systems featuring integrated pump and pressure control, and Hydraulic mechanisms documenting the complete loader and backhoe actuation networks. The reference continues through Transmission assemblies comparing manual reversing and torque converter options, Cooling systems with radiator and water pump specifications, and Fuel system procedures for both gasoline and diesel powerplants.
Integrated Parameters
Cooling system maintenance is addressed in the water pump, radiator, thermostat, and drive belt assembly sections, with specifications for gasoline and diesel-equipped models. Testing requirements are specified for electrical components including the alternator, starter motor, distributor, and battery systems, with separate documentation for US and FTO-E (export) configurations. The catalog provides wiring diagrams and connector identification for instrument clusters, safety switches, and external lighting assemblies.
Operational Interface
Clearance measurements are addressed for rear axle shaft bearing selections through shim specifications ranging from 0.038" to 0.082" thick, enabling precise differential housing assembly. Special procedures are addressed for fuel injection pump timing on diesel engines, including automatic advance mechanisms and governor linkage adjustment. The document includes connector and seal part numbers across hydraulic, electrical, and fuel system networks.
Technical Topology
Verification procedures are included for breaker point gap settings, spark plug specifications, and alternator output current ratings. The manual documents torque specifications for engine fasteners to ensure proper thermal expansion compensation across cylinder head, crankshaft, and transmission case assemblies. Engine compartment systems encompassing manifold and exhaust configurations, crankcase ventilation tubes, and emission control components are fully itemized with their mounting hardware.
Comprehensive Parameters
The backhoe-specific sections reference control valve assemblies with multiple spool configurations, swinging drawbar components, and hydraulic cylinder options for both standard and hydro-bucket loader variants. Electrical system architecture includes dual configurations for tractors with cabin features and open-station models, incorporating hazard warning systems, transmission oil temperature indicators, and cold-start glow plug wiring harnesses for diesel operation. All fastener specifications—bolt sizes, torque lock washers, and connector types—support field assembly and maintenance documentation across 19 major functional areas covering approximately 200 model variations.
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