Market Position:
Essential resource for owners and technicians of the IH International Case 674 Tractor, providing in-depth service and repair information for restoration and maintenance.
Key Features:
Instant download, two comprehensive manuals (Factory Service and Shop), improved PDF features (bookmarks, search, index), detailed diagrams, manufacturer specifications, step-by-step instructions, broad device compatibility.
Competitive Landscape Context:
The IH International Case 674 competed with similar-sized utility tractors from manufacturers like John Deere, Ford, Massey Ferguson, and Allis-Chalmers during its production era.
Manual 1 Coverage:
Full factory service and repair for IH International Case 674 Tractor, including ROPS, Loader, Tractor Splits, Front End, Axle, Wheels, Steering, Engine, Fuel System, Electrical System, Cooling System, Clutch, Flywheel, Transmission, Differential, Rear Axles, Housings, Wheels, Brakes, Independent Power Take-Off, Hitch, and Hydraulic System.
Manual 2 Coverage:
Aftermarket shop manual for IH International Case 674 Tractor, covering Brakes, Carburetor, Clutch, Engine, Cooling System, Diesel Engine & Components, Diesel Fuel System, Differential, Electrical System, Engine, Final Drive, Front System, Governor (Non-Diesel), Hydraulic System, Hydrostatic Steering System, Main Drive Bevel Gears and Differential, Non-Diesel Engine & Components, Power Steering System, Power Take-Off, Service Data, Transmission (Range and Speed), and more.
Manual 1 Page Count:
572 pages
Manual 2 Page Count:
59 pages
Manual 1 Type:
Complete Factory Service Manual / Dealer Service Workshop Manual
Manual 2 Type:
Aftermarket Shop Manual
Manual Bundle:
Includes two distinct manuals: a factory service workshop manual and an aftermarket shop manual.
Accessibility:
Instant download, enabling immediate access for users.
Quality Enhancements:
Improved PDF quality ensures clarity of text and diagrams for better usability.
Digital Delivery:
Delivered as a zipped PDF file, requiring extraction before use.
Compatibility:
All Versions of Windows, Mac, iOS, BB, Android, etc.
Systems Manual 1:
Engine, Fuel System, Electrical System, Cooling System, Clutch, Flywheel, Transmission, Differential, Rear Axles, Brakes, Independent Power Take-Off, Hitch, Hydraulic System, Steering, Front End, Axle, Wheels.
Systems Manual 2:
Brakes, Carburetor, Clutch, Engine (Diesel & Non-Diesel components), Cooling System, Fuel System (Diesel), Differential, Electrical System, Final Drive, Front System, Governor (Non-Diesel), Hydraulic System, Hydrostatic Steering, Power Steering, Power Take-Off, Transmission (Range & Speed), Main Drive Bevel Gears.
Hydraulics Coverage:
Detailed coverage of the tractor's hydraulic system, including the hitch system, for repair, maintenance, and troubleshooting of functions like lift arms, remote hydraulics, and power steering.
Transmission Coverage:
In-depth coverage of transmission systems, including main drive, range, and speed gears, differential assemblies, and final drives, detailing disassembly, inspection, repair, and assembly.
Steering Coverage:
Detailed coverage of steering systems, including mechanical linkages, power steering components, and hydrostatic steering systems, with diagnostic and repair procedures.
Brakes Coverage:
Detailed procedures for servicing and repairing the braking system, likely including hydraulic, mechanical, and parking brake components.
Electrical System Coverage:
Comprehensive coverage of the tractor's electrical system, including battery, starter, alternator, wiring harness, lighting, instrumentation, and potential PTO engagement controls.
Front End Axle Wheel Coverage:
Covers the steering components, front axle assembly, wheel bearings, and related systems for maintenance and repair.
Procedures Manual 1:
Servicing and repair procedures, detailed diagrams, manufacturer specifications, troubleshooting guidance.
Procedures Manual 2:
Service and repair procedures, technical details, step-by-step instructions, service data.
Electrical Procedures:
Comprehensive electrical system diagnostics, wiring diagrams, component testing, and repair procedures for starting, charging, lighting, and implement control systems.
Engine Overhaul Procedures:
Step-by-step instructions for engine disassembly, inspection of internal components (pistons, rings, bearings, valves), cylinder head service, crankshaft, and reassembly with torque specifications and clearances.
Power Take Off Procedures:
Instructions for servicing and repairing the independent power take-off (PTO) system, ensuring proper engagement and operation.
Clutch Procedures:
Detailed instructions for clutch inspection, adjustment, and replacement, including flywheel and pressure plate service.
Technical Depth:
Comprehensive, covering basic maintenance to advanced repair procedures and diagnostics, suitable for DIY restorers and professional mechanics.
Diagnostics Coverage:
Both manuals provide diagnostic procedures, with the factory service manual offering more in-depth troubleshooting for factory-specific systems and tolerances. The shop manual supplements this with common aftermarket repair guidance.
Diagrams Illustrations:
Extensive use of comprehensive illustrations, exploded diagrams, drawings, and photos to guide users through service and repair procedures.
Troubleshooting Depth:
Includes dedicated troubleshooting sections and symptom-based diagnostic procedures to identify and resolve mechanical and electrical faults.
Engine Type:
Likely a Diesel engine (specified in Manual 2 covering Diesel Engine & Components, Diesel Fuel System). Common IH/Case engines of this era would include the D-series or BD-series diesel engines.
Engine Displacement Estimation:
Based on common tractor configurations of the era, likely in the 3.1L to 4.5L range (specific displacement details would be found within the manuals).
Horsepower Estimation:
Typically in the 50-70 PTO horsepower range for a tractor of this class and era, depending on engine variant and configuration.
Fuel System Type:
Diesel Fuel System (Manual 2), Fuel System (Manual 1). Likely a direct injection system with a rotary or inline injection pump.
Fuel System Components:
Detailed information on fuel filters, pumps, injectors, and calibration procedures for diesel engines, and carburetor details for gasoline variants. Manual 2 specifically lists 'Carburetor' and 'Diesel Fuel System'.
Fuel System Service Data:
Manual 2 includes 'Service Data' which would likely contain specifications for fuel system components, injection timing, and pressure tests.
Engine Variants:
The manual explicitly mentions both 'Diesel Engine & Components' and 'Non Diesel Engine & Components', suggesting the 674 may have been offered with both diesel and gasoline engine options, or that the manuals cover variants within the 674 family.
Engine Configuration:
Likely inline diesel (e.g., 3 or 4 cylinder) for diesel variants, and inline gasoline for gasoline variants. Manuals cover 'Diesel Engine & Components' and 'Non Diesel Engine & Components'.
Service Intervals General:
Typical service intervals would include engine oil and filter changes every 100-250 operating hours, fuel filter changes as recommended, air filter checks at frequent intervals, and transmission/hydraulic fluid changes based on operating hours and conditions. Specific intervals are detailed within the manuals.
Engine Oil Spec Estimation:
Likely a multi-viscosity diesel engine oil, such as SAE 15W-40 or 10W-30, meeting API service classifications suitable for diesel engines of that era. Hydraulic fluid and transmission oil specifications would also be provided.
Hydraulic Fluid Spec Estimation:
Likely requires a premium tractor hydraulic fluid (THF) or universal tractor transmission oil (UTTO) meeting specific industry standards like IH Hy-Trans or a comparable specification.
Transmission Oil Spec Estimation:
May require a specific multi-purpose tractor fluid like IH Hy-Trans or a universal transmission oil (UTTO) that also serves the hydraulic system. Manuals will specify.
Common Issues Context:
Common issues on tractors of this age can include wear in the transmission synchronizers or gears, hydraulic system leaks (especially from seals and hoses), fuel injection system issues ( injectors, pumps), and electrical system degradation (wiring, starter, alternator). Regular maintenance outlined in the manuals is key to preventing these.
