The International Harvester 674 is a robust tractor model, likely produced during the 1970s, designed for agricultural and utility applications. As a product of International Harvester, a manufacturer with a significant heritage in agricultural equipment, the 674 embodies a commitment to engineering quality and reliability. Its design focuses on practical functionality, incorporating essential systems such as a diesel engine, transmission, hydraulic system, and power steering to ensure efficient operation in demanding environments. This tractor represents a solid choice for those seeking dependable performance in field work and other operational tasks.
This comprehensive service repair manual provides detailed information for the International Harvester 674. It covers a wide array of systems, including the engine, cooling system, fuel system, powertrain, clutch, differential lock, electrical system, brakes, and hydraulic system, among others. The manual offers step-by-step repair and standard maintenance procedures, supported by hundreds of photos and illustrations, making it an invaluable resource for both do-it-yourself owners and experienced mechanics. Its purpose is to guide users through diagnostics, maintenance, and repairs, ensuring the longevity and optimal performance of the vehicle.
    
    
    
    
        
            Make:
        
        
            International Harvester
        
     
    
    
        
            Product Type:
        
        
            Service Repair Manual
        
     
    
 
    
    
    
        
            Target Audience:
        
        
            Do-it-yourselfers and experienced mechanics
        
     
    
    
        
            Advantage Over Paper:
        
        
            Less expensive, more convenient, easily printable, no degradation
        
     
    
    
        
            Completeness:
        
        
            COMPLETE official full factory service repair manual
        
     
    
        
            Availability:
        
        
            No extra fees, no expiry dates
        
     
    
    
        
            Cost Savings:
        
        
            Inexpensive way to keep vehicle working properly, saves money on mechanic fees
        
     
 
    
    
    
        
            Coverage Scope:
        
        
            Complete official full factory service repair manual
        
     
    
    
        
            Estimated Page Count:
        
        
            Hundreds of pages (exact number not specified, but implied to be substantial)
        
     
    
    
        
            Type:
        
        
            Workshop Manual / Service Manual
        
     
    
    
    
    
 
    
    
    
        
            Engine:
        
        
            Yes, detailed engine information
        
     
    
    
    
    
    
    
    
    
    
        
            Fenders Fuel Tank Platform:
        
        
            Yes
        
     
    
    
    
    
    
        
            Main Drive Bevel Gears And Differential:
        
        
            Yes
        
     
    
    
        
            Power Steering System:
        
        
            Yes
        
     
    
    
    
    
    
    
        
            Repair Procedures:
        
        
            Yes, step-by-step instructions based on complete disassembly
        
     
    
        
            Maintenance Procedures:
        
        
            Yes, including standard maintenance
        
     
    
        
            Troubleshooting:
        
        
            Implied through diagnostic guidance and repair steps
        
     
    
    
        
            Depth:
        
        
            Complete factory service information, suitable for do-it-yourselfers and experienced mechanics
        
     
    
    
        
            Illustrations And Photos:
        
        
            Hundreds of photos and illustrations
        
     
 
    
    
    
    
    
        
            Printability:
        
        
            Printable in its entirety or specific pages
        
     
    
    
        
            Binding:
        
        
            Digital (PDF format, no physical binding)
        
     
    
    
        
            Paper Type:
        
        
            Not applicable (digital format)
        
     
    
    
        
            PDF Reader:
        
        
            Adobe PDF Reader (free online)
        
     
    
        
            Unzipping Software:
        
        
            Winzip or equivalent (free online)
        
     
    
    
        
            Operating Systems:
        
        
            All Versions of Windows and Mac
        
     
    
        
            Devices:
        
        
            Desktop PCs, laptops, smartphones, tablets, web browsers
        
     
 
    
    
    
        
            Engine Family:
        
        
            International Harvester D-series (likely D-179, D-206, or D-236 diesel engines, specific details require manual content)
        
     
    
    
        
            Horsepower Torque:
        
        
            Specific figures not provided in product description; covered within the manual.
        
     
    
    
        
            Fuel Type:
        
        
            Likely Diesel (based on typical IH tractor engines of this era)
        
     
    
    
        
            Engine Details:
        
        
            Comprehensive coverage of engine components and systems.
        
     
 
    
    
    
        
            Transmission Type:
        
        
            Likely a range of transmissions including gearboxes and potentially a torque amplifier (T/A) or power shift option, as common on IH tractors. Specifics within the manual.
        
     
    
    
        
            Transmission Coverage:
        
        
            Detailed information on transmission operation, maintenance, and repair.
        
     
 
    
    
    
    
    
        
            Weight Specifications:
        
        
            Not specified in product description; detailed in manual.
        
     
 
    
    
    
        
            Safety Features:
        
        
            Brake system, park brake, and steering system details contribute to safety. Specific ratings not provided.
        
     
 
    
    
    
        
            Infotainment System:
        
        
            Not applicable (agricultural tractor, focus on mechanical and hydraulic systems).
        
     
    
    
        
            Driver Assistance Features:
        
        
            Power steering system is a key technological feature for ease of operation. Other advanced driver assistance systems are not typical for this era of tractor.
        
     
    
    
        
            Connectivity Options:
        
        
            Not applicable.
        
     
 
    
    
    
        
            Maintenance Schedule:
        
        
            Covered within the manual, providing guidance for routine servicing.
        
     
    
    
        
            Fluid Types Capacities:
        
        
            Detailed specifications for engine oil, transmission fluid, hydraulic fluid, coolant, and brake fluid are included in the manual.
        
     
    
    
        
            Common Problems:
        
        
            The manual addresses common issues, troubleshooting, and repair procedures for the 674 model.
        
     
    
    
        
            Filter Part Numbers:
        
        
            Specific part numbers for oil filters, fuel filters, and air filters would be detailed in the manual.
        
     
 
    
    
    
        
            Manufacturer:
        
        
            International Harvester (IH), a significant manufacturer of agricultural and industrial equipment.
        
     
    
    
        
            Model Series:
        
        
            The 674 is part of IH's tractor lineup, likely from the 1970s era, positioned as a utility or row-crop tractor.
        
     
    
    
        
            Production Period:
        
        
            Likely produced in the 1970s, precise years not specified.
        
     
 
    
    
    
        
            Industry Awards:
        
        
            No specific awards for the manual or model mentioned in the product description.