1 1

International Harvester

International Harvester Tractor 674 Service Repair Workshop Manual

International Harvester Tractor 674 Service Repair Workshop Manual

$0.00
$0.00
Sale Sold out
Shipping calculated at checkout.
Machine data plate
Brand
International Harvester
Equipment
Tractors
Models covered
674
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your serial range? Ask us before you buy
🏷️ Basic Information
Identification
Make:
International Harvester
Model:
674
Model Variant:
Utility tractor (2WD and 4WD variants)
Production Years:
1970s to early 1980s (exact years vary by market)
👋 Introduction
Market Position
Target Audience:
Farm operators and light construction users requiring a versatile utility tractor.
Positioning:
Positioned as a reliable mid-range utility tractor in IH lineup, competing with Ford, John Deere, Massey Ferguson.
Competitive Analysis
Comparative Advantage:
Known for robust construction, reliable performance, and user-friendly operation.
Key Competitors:
Ford, John Deere, Massey Ferguson, Case IH.
Key Features
Design Philosophy:
Robust construction, reliable performance, user-friendly operation, and versatility.
Manual Advantage:
Comprehensive factory manual with easy navigation via table of contents.
📋 Manual Details
Coverage
Machines Covered:
International Harvester Tractor 674 (all variants).
Additional Topics:
Troubleshooting, maintenance schedules, wiring diagrams, diagnostic procedures, parts identification.
Format
Page Count:
Comprehensive, specific count not stated.
Manual Type:
Factory Service Repair Manual (FSM).
Language:
English
File Format:
PDF
Delivery:
Instant digital download after purchase.
📖 Manual Coverage
Systems Covered
Engine Systems:
Engine overhaul, fuel system, cooling, lubrication, pre-heating/starting aids for diesel, exhaust.
Powertrain Systems:
Clutch, transmission, final drives, differential, PTO.
Hydraulics Systems:
Pump, control valves, lift arms, fluid system, external circuits.
Electrical Systems:
Wiring diagrams, starter, charging, lighting, instrumentation, battery.
Chassis And Steering:
Front and rear axles, steering system (manual or power), brakes.
Operator Station:
Controls, seat, platform, dashboard, safety features.
Procedures Included
Maintenance Procedures:
Scheduled maintenance, lubrication points and intervals, filter and fluid changes.
Repair Procedures:
Step-by-step repair instructions for all major components.
Troubleshooting:
Systematic diagnostics, common faults and solutions.
Disassembly And Assembly:
Complete instructions for dismantling and rebuilding systems.
Specifications:
Torque specs, pressures, clearances, wear limits.
Calibration:
Hydraulic lift calibration and relief valve setting.
Technical Depth
Diagnostic Capability:
Advanced, includes electrical schematics and hydraulic circuit analysis.
Rebuild Procedures:
Full rebuild coverage for engine, transmission, hydraulics.
Specifications And Tolerances:
Detailed torque, clearance, and operational parameters.
Complexity:
From routine maintenance to full overhauls.
Parts Information
Component Identification:
Detailed diagrams and part numbers for identification.
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
Windows and Mac operating systems.
Requirements:
Adobe PDF Reader for viewing; WinZip for extraction if needed.
Searchability:
Text searchable within PDF.
Print Quality
Printability:
Printable pages available for all content.
Binding
Binding Method:
Digital download - not applicable for physical binding.
Paper
Paper Type:
Not applicable for digital format; original manuals used durable paper stock.
⚙️ Engine Specifications
Primary Engine
Engine Type:
Diesel, likely IH D or DT series (e.g., DT-239, DT-301) or Perkins derivatives.
Displacement Estimate:
239-301 cubic inches (3.9-4.9 liters) depending on variant.
Performance
Horsepower Range:
Approx. 60-75 PTO hp depending on engine.
Fuel System
Fuel Type:
Diesel
Injection:
Direct or indirect injection, specifics vary by engine.
🔧 Transmission
Standard Transmission
Type:
Manual gearbox with multiple speeds (e.g., 8 forward and 2 reverse typical).
Clutch:
Dry disc, details in manual.
Optional Transmission
Availability:
N/A - not specified for this model; optional creeper or power shuttle may have been offered in some markets.
Features
PTO:
Independent PTO with multiple speeds.
Differential Lock:
Often available for improved traction.
📐 Dimensions
Exterior
Wheelbase:
N/A - not specified in documentation.
Length:
N/A - not specified in documentation.
Weights
Curb Weight:
N/A - not specified in documentation; typical utility tractor of this size weighs around 5,500-7,000 lbs.
🛡️ Safety Features
Ratings
Crash Test Information:
N/A - not applicable for agricultural tractors.
Active Features
Brakes:
Internal expanding shoe brakes, mechanical or hydraulic actuation.
Steering:
Manual or optional power steering.
Passive Features
Operator Protection:
Roll-over protective structure (ROPS) may be fitted as standard or optional.
Safety Manual:
Includes safety information and warnings.
💡 Technology Features
Infotainment
Audio System:
N/A - not applicable for this tractor model.
Driver Assistance
Operator Aids:
None, typical for era; manual provides instrumentation and controls layout.
🔧 Maintenance
Service Intervals
Oil Change:
Typically every 100-150 hours, see manual for exact interval.
Filter Replacement:
Engine oil, fuel, and hydraulic filters to be replaced at scheduled intervals.
Hydraulic Fluid:
Check and change per manual schedule.
Fluid Specifications
Engine Oil:
API service classification appropriate for diesel, viscosity per manual.
Hydraulic Fluid:
IH Hy-Tran fluid or equivalent per manual.
Coolant:
Ethylene glycol based, see manual for mixture.
Known Issues
Common Wear Items:
Brake shoes, clutch discs, hydraulic seals, and steering components.
Troubleshooting:
Manual includes diagnostic guides for common issues.
📚 Vehicle History
Brand Heritage
Manufacturer:
International Harvester (IH), known for durable agricultural machinery.
Model Evolution
Design Heritage:
Part of IH's utility tractor line, succeeding earlier models like the 574 and 464.
Production Context:
Produced during the mid-1970s to early 1980s, an era of competition with Ford, John Deere, and Massey Ferguson.
Production Location
Assembly Plant:
N/A - not specified in available documentation.
🏆 Awards & Recognition
Recognitions
Awards:
N/A - no specific awards found for this model or era.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the serial range before you buy

Manufacturers change procedures and part numbers by serial-number break. If your data plate shows a serial prefix that is not listed above, contact us with the model and serial number and we will confirm coverage before you order.

View full details
  • Instant download PDF link on your order page and by email right after payment.
  • Secure checkout Encrypted Shopify checkout — we never see your card.
  • Print-ready PDF Searchable text, print the pages you need for the workshop.
  • Phone, tablet, PC Open it in the cab, the workshop or the office.