Historical Segment:
Utility tractor, designed for a wide range of agricultural tasks, from fieldwork to light construction.
Key Competitors:
Ford, John Deere, Massey Ferguson, Case IH (during its operational period).
Tractor Design Philosophy:
Robust construction, reliable performance, user-friendly operation, and versatility for farm operations.
Manual Access:
Easy navigation via table of contents, facilitating quick access to required information.
Benefit To Owner:
Enables owners to perform maintenance, troubleshooting, and repairs independently, saving on service costs and reducing downtime.
Cost Savings:
Enables significant cost savings by avoiding dealership labor charges for repairs and maintenance.
Primary Coverage:
International Harvester Tractor 674
Additional Coverage:
Troubleshooting guides, maintenance schedules, wiring diagrams, diagnostic procedures, and parts identification.
Estimated Page Count:
Detailed (Specific page count not provided, but described as comprehensive)
Type:
Factory Service Repair Manual
Primary Language:
English
Engine Systems:
Engine overhaul, fuel system, cooling system, lubrication, ignition system (if applicable for diesel pre-heating/starting), exhaust system.
Powertrain Systems:
Clutch, transmission (gearbox), final drives, differential, power take-off (PTO).
Hydraulics Systems:
Hydraulic pump, control valves, lift arms, hydraulic fluid system, external hydraulic circuits.
Electrical Systems:
Wiring diagrams, starter system, charging system, lighting, instrumentation, battery.
Chassis And Steering:
Front axle, rear axle, steering system (mechanical and/or power steering), braking system.
Operator Station:
Operator controls, seat, platform, dashboard, safety features.
Braking System Coverage:
Service and repair of internal or external contracting shoe brakes, brake adjustments, and hydraulic brake lines.
Steering System Coverage:
Mechanical steering box, tie rods, linkage maintenance, and power steering unit service (if equipped).
Frontend And Steering Geometry:
Includes specifications for front axle alignment and steering component checks.
Maintenance Procedures:
Scheduled maintenance, lubrication points and intervals, filter replacement, fluid checks and changes.
Repair Procedures:
Detailed step-by-step repair instructions for all major components and systems.
Troubleshooting:
Systematic diagnostic procedures, common problems and their solutions, fault finding guides.
Disassembly And Assembly:
Complete instructions for dismantling and reassembling all tractor systems.
Specification Data:
Includes critical specifications like bolt torques, hydraulic pressures, engine clearances, and wear limits.
Hydraulic System Calibration:
Procedures for calibrating the hydraulic lift system and setting pressure relief valves.
Diagnostic Capability:
Advanced diagnostics, including electrical schematics and hydraulic circuit analysis.
Rebuild Procedures:
Comprehensive rebuild procedures for engines, transmissions, and hydraulic components.
Specifications And Tolerances:
Detailed torque specifications, clearance measurements, and operational parameters.
Repair Complexity:
Covers everything from routine fluid changes and filter replacements to full engine and transmission rebuilds.
Component Identification:
Detailed diagrams and part numbers for identifying specific components during repair.
Format Details:
PDF; requires Adobe PDF Reader for viewing and WinZip for potential extraction.
Compatibility:
Compatible with all versions of Windows and Mac operating systems.
Searchability:
PDF format typically allows for text searching within the document.
Printability:
Printable pages available for all content.
Binding Method:
Not applicable for digital format; if printed, would be professional binding.
Paper Quality:
Not applicable for digital format; original manuals were typically on durable paper stock.
Engine Manufacturer Type:
Likely a D or DT series diesel engine (e.g., DT 239, DT 301, or similar Perkins derivatives used by IH).
Horsepower Range Estimated:
Approximately 60-75 PTO horsepower (specific engine variant dependent).
Engine Displacement Estimated:
Likely in the range of 239 to 301 cubic inches (3.9 to 4.9 liters), depending on the specific engine model.
Injection System:
Direct injection, likely with a distributor-type or inline injection pump.
Filtration:
Includes details on fuel filters, primary and secondary, and their replacement intervals.
Operator Interface:
Basic mechanical controls, instrument panel for engine monitoring (oil pressure, temperature, battery voltage), fuel gauge.
Traction Enhancement:
Differential lock for improved traction in slippery conditions.
Farm Management Integration:
Not applicable in the modern sense; primary connectivity is through mechanical linkages for implements.
Engine Oil Change:
Typically every 250-400 hours of operation, or annually, depending on operating conditions and oil type.
Air Filter Service:
Inspect regularly, clean or replace as needed based on operating environment (e.g., dusty conditions).
Engine Oil Type:
API CD or CE rated diesel engine oil, viscosity grade typically 15W-40 or 10W-30 depending on climate.
Hydraulic Fluid Type:
IH Hy-Trans or an equivalent universal tractor transmission fluid (UTTF) meeting IH specifications. Check manual for exact specification.
Coolant Type:
Ethylene glycol-based antifreeze (e.g., green or universal OAT) mixed with distilled water for a 50/50 ratio.
Transmission Oil Type:
IH Hy-Trans or equivalent UTTF. Refer to manual for specific IH part numbers or SAE grades if applicable.
Common Wear Points:
Clutch wear, hydraulic pump seals, PTO clutch engagement, and potential for front axle wear due to heavy use.
Electrical System Concerns:
Wiring harness degradation, starter motor issues, and alternator output can be common in older units.
Transmission Difficulty:
Grinding gears or difficulty engaging certain gears can indicate clutch or synchronizer wear.
Cooling System Issues:
Radiator leaks, thermostat failures, and water pump seal leaks are common in older tractors.
International Harvester Legacy:
A long-standing and respected manufacturer of agricultural machinery, known for durability and innovation.
Tractor 674 Lineage:
Part of the IH '70' series (e.g., 74 series), which succeeded earlier models, offering updated features and performance.
Production Period Estimated:
Likely produced in the mid to late 1970s and early 1980s.
