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Introduction
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Market Position
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Segment:
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Utility Tractor
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Target User:
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Agricultural, horticultural, and industrial operations requiring a versatile and robust utility tractor.
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Competitive Analysis
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Competitors:
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Models from manufacturers like John Deere, Massey Ferguson, New Holland, Fiat, and Landini within the same horsepower and utility class.
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Key Features
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Power Shuttle Transmission:
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A key differentiator offering on-the-go shifting without clutching, enhancing productivity and operator comfort.
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Versatility:
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Designed for a wide range of tasks including plowing, tilling, mowing, loader work, and transport, supported by various implement configurations.
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Manual Coverage
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Systems Covered
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Engine Service:
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Detailed overhaul, diagnosis, tuning, component testing, and replacement for all engine variants used in Dorado 66, 76, 86 models.
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Transmission Service:
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Complete repair and maintenance procedures for the Power Shuttle transmission, including hydraulic systems, clutch packs, gearsets, and control mechanisms.
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Drivetrain Service:
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Front and rear axle repair, differential overhaul, drive shaft maintenance, and PTO (Power Take-Off) unit service.
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Hydraulic System Service:
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Diagnosis and repair of the main hydraulic pump, control valves, lift arms, auxiliary hydraulic circuits, and hydraulic fluid specifications.
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Braking System Service:
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Maintenance, repair, and adjustment of mechanical and hydraulic brake systems, including parking brake operation.
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Steering System Service:
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Repair and maintenance of the power steering system, including hydraulic components and steering linkage.
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Electrical System Service:
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Wiring diagrams, troubleshooting guides for starting and charging systems, lighting, instruments, and auxiliary electrical components.
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Cooling System Service:
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Radiator, fan, water pump, thermostat, and coolant specifications and repair procedures.
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Fuel System Service:
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Diesel injection pump, injectors, fuel filters, and fuel tank maintenance and repair.
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Operator Station Service:
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Repair and maintenance of controls, seating, and cabin components (if applicable).
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Body And Chassis Service:
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Frame inspection, mounting points, fender and hood repair, and paint specifications.
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Procedures Included
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Diagnostic Procedures:
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Step-by-step troubleshooting guides for common and uncommon faults across all major systems.
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Maintenance Procedures:
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Scheduled maintenance tasks, lubrication points, filter changes, and fluid level checks.
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Overhaul Procedures:
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Detailed instructions for complete disassembly, inspection, repair, and reassembly of major components like engines and transmissions.
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Adjustment Procedures:
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Calibration and adjustment of critical systems such as valve lash, injection timing, brake linkage, and hydraulic controls.
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Torque Specifications:
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Precise torque values for critical fasteners across all assemblies, ensuring proper component seating and preventing damage.
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Special Tool Requirements:
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Identification of specialized tools and equipment needed for specific repair or maintenance tasks.
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Technical Depth
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Depth Of Coverage:
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Comprehensive, covering everything from basic preventative maintenance to complete engine and transmission rebuilds. Suitable for professional mechanics and advanced DIY users.
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Manual Type
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Manual Description:
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Comprehensive Factory Service & Repair Manual, designed to guide users through all aspects of maintenance, troubleshooting, and repair.
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Engine Specifications
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Primary Engine
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Engine Manufacturer:
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SAME (Typically utilizes engines from its own or related SDF Group brands, or reputable third-party suppliers common in agricultural machinery).
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Engine Type:
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Diesel, naturally aspirated or turbocharged, 3-cylinder or 4-cylinder variants depending on specific model (66, 76, 86).
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Displacement:
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Expected to range from approximately 3.0L to 4.5L, depending on the specific model and engine configuration. (Exact figures depend on engine code, not specified.)
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Performance
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Horsepower Range:
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Approx. 65-85 HP (Flywheel), aligning with the '66', '76', '86' designations.
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Torque Characteristics:
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Designed for strong low-end torque crucial for pulling heavy loads and operating implements at lower ground speeds.
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Fuel System
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Fuel Type:
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Diesel Fuel
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Injection System:
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Inline injection pump or rotary injection pump (common in this era of diesel engines), with mechanical or electronic controls depending on exact model year and emissions standards.
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Engine Type
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Cooling Method:
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Liquid-cooled
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Maintenance
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Service Intervals
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Engine Oil Change:
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Typically every 250-500 operating hours, or annually. (Manual will specify exact interval and oil type).
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Hydraulic Oil Change:
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Generally every 500-1000 operating hours or annually. (Manual will detail specific fluid and interval).
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Air Filter Replacement:
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As needed based on operating conditions, typically checked daily and replaced when visibly dirty or at specified intervals (e.g., 250 hours). (Manual will provide precise guidance).
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Fuel Filter Replacement:
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Typically every 500 operating hours or annually. (Manual will specify exact interval and part numbers).
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Fluid Specifications
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Engine Oil Type:
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API CG-4 or CH-4, SAE 15W-40 or 10W-30 depending on climate. (Manual will provide precise OEM specifications and viscosity grades).
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Hydraulic Fluid Type:
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Tractor Hydraulic Fluid (THF) or UTF (Universal Tractor Transmission Oil) meeting specific ISO or AGMA standards. (Manual will specify the exact fluid type and capacity).
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Transmission Fluid Type:
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Likely the same as hydraulic fluid for integrated systems, or a specific gear oil for the gearbox component. (Manual will detail all fluid types and capacities).
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Coolant Type:
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Ethylene glycol-based antifreeze coolant, mixed with distilled water. (Manual will provide specific mixture ratio and capacity).
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Known Issues
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Power Shuttle Wear:
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Potential wear on clutch packs within the Power Shuttle unit over extended use, requiring hydraulic pressure checks and potential rebuild. (Manual will diagnose).
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Hydraulic System Leaks:
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Common for tractors of this age, potential leaks at seals, hoses, or valve bodies. (Manual provides seal kits and repair procedures).
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Electrical Connection Corrosion:
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Corrosion on electrical connectors due to exposure to elements and moisture, leading to intermittent faults. (Manual's wiring diagrams and troubleshooting are key).
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