Target User:
Owners, mechanics, and technicians working on International Harvester 674 Tractors.
Information Layout:
Features a table of contents for easy information retrieval.
Benefit Cost Saving:
Enables significant savings on repair costs by empowering users to perform maintenance and repairs themselves.
Benefit Convenience:
Provides convenient access to repair information anytime, anywhere, directly on digital devices.
Benefit Knowledge Acquisition:
Offers in-depth knowledge of vehicle systems, crucial for emergency situations and proper operation.
Engine:
Complete coverage of engine repair, overhaul, diagnostics, and specifications.
Transmission:
Detailed information on transmission systems, including operation, troubleshooting, and repair.
Drivetrain:
Coverage of rear axle, differential, and drive components.
Hydraulics:
In-depth coverage of the hydraulic system, including pump, valves, cylinders, and fluid specifications.
Electrical System:
Includes wiring diagrams, component testing, and troubleshooting for the electrical system.
Braking System:
Repair and maintenance procedures for the braking system.
Steering System:
Service and repair information for the steering mechanism.
Cooling System:
Maintenance and repair of the radiator, fan, and thermostat.
Fuel System:
Troubleshooting and repair of the fuel injection or carburetion system and fuel tank.
User Interface:
Information on control levers, dashboard indicators, and operator controls.
Front Axle Steering:
Repair and maintenance of the front axle and steering components.
Three Point Hitch:
Service and adjustment of the three-point hitch and draft control system.
Routine Maintenance:
Detailed schedules and procedures for oil changes, filter replacements, lubrication, and inspections.
Troubleshooting:
Systematic guides for diagnosing and resolving common and complex issues.
Major Repairs:
Step-by-step instructions for component overhauls and major repairs.
Component Disassembly Reassembly:
Detailed guides for taking apart and putting back together various tractor components.
Diagnostics:
Methods for identifying faults using visual inspection, measurements, and specialized tools.
Wiring Diagrams:
Includes detailed electrical wiring diagrams for the entire tractor.
Depth Of Information:
Comprehensive, suitable for professional mechanics and experienced DIY users.
Engine Rebuild:
Complete procedures for engine overhaul, including piston, ring, bearing, and cylinder head service.
Hydraulic Component Overhaul:
Detailed instructions for rebuilding hydraulic pumps, cylinders, and control valves.
Engine Type:
Likely a diesel engine, common for this class of tractor.
Engine Family:
International Harvester D-series (e.g., D-155, D-179, D-206, D-236, D-246, D-268, D-310 depending on specific 674 variant).
Cylinder Count:
Typically 3 or 4 cylinders for this model range.
Horsepower Range:
Approximately 50-70 HP (exact figures vary by specific engine option).
Torque Specifications:
Detailed torque specifications for critical engine components will be present in the manual.
Injection System:
Likely a direct injection system with a rotary or inline injection pump (e.g., CAV, Bosch).
Cooling Method:
Liquid-cooled
Oil Type:
Specific diesel engine oil grades (e.g., API CD or equivalent) and capacities will be detailed.
Transmission Type:
Manual gearbox with various speed configurations (e.g., 8-speed or 16-speed with creeper gears).
Gear Selection:
Likely a combination of main shift lever and range selector.
Power Take Off Pto:
Includes operation and maintenance of the PTO system (540/1000 RPM).
Differential Lock:
Information on the operation and maintenance of the rear differential lock.
Transmission Hydraulic Fluid:
Specifications for transmission and hydraulic fluid (likely a Universal Tractor Transmission Oil - UTTO or similar).
Overall Length:
Approx. 3500-3700 mm (138-146 inches), varies with hitch.
Overall Width:
Approx. 1700-1900 mm (67-75 inches), varies with tire size.
Wheelbase:
Approx. 2100-2200 mm (83-87 inches).
Operating Weight:
Approx. 2500-3000 kg (5500-6600 lbs).
Operator Controls:
Focus on mechanical and basic electrical controls, not modern infotainment systems.
Tractor Systems:
Covers systems like power steering, draft control, and PTO engagement.
Diagnostics Interfaces:
Information on how to diagnose issues, typically through mechanical checks and basic electrical testing.
Engine Oil Change:
Typically 250 hours, specific interval will be detailed in manual.
Hydraulic Fluid Change:
Typically annually or after a set number of operating hours, detailed in manual.
Engine Coolant:
Recommendations for coolant type and mixture ratio (e.g., ethylene glycol-based).
Transmission Hydraulic Fluid Spec:
Exact UTTO (Universal Tractor Transmission Oil) specification or equivalent will be listed (e.g., IH Hy-Tran).
Engine Oil Spec:
Specific SAE viscosity grade (e.g., 15W-40) and API classification (e.g., CD or CE) for diesel engines.
Common Wear Points:
Manual likely addresses wear and tear on clutch, brakes, hydraulics, and PTO.
Electrical Component Reliability:
Troubleshooting for common electrical issues might be included.
Hydraulic System Performance:
Common hydraulic problems like slow lift or leaks will be covered.
