🏷️ Basic Information

Make:

International Harvester (IH) / Case IH

Model:

684 Tractor

Product Name:

Collection of 2 files - IH International Case 684 Tractor Factory Repair Service Manual & Operator Manual - Improved - Download PDF

Product Sku:

IH-684-RSM-OM-PDF

👋 Introduction

Market Segment:

Utility Tractor (Medium Duty)

Primary Applications:

General farming, row crop cultivation, hay making, loader work, property maintenance.

Key Competitors Of Era:

John Deere 20 Series, Massey Ferguson 500 Series, Ford 30 Series, Fiat, David Brown.

Engine Options:

IH D-239 (3.8L) and D-268 (4.2L) Diesel Engines.

Transmission Options:

Choice of 8-speed or 16-speed (with hi-lo range) transmissions, including options with independent PTO.

Hydraulic System:

Robust open-center hydraulic system with significant lift capacity and multiple remote valve options.

Operator Comfort:

Comfortable operator station with good visibility, available with platform or ROPS.

📋 Manual Details

Repair Manual Coverage:

Comprehensive repair and service information for the IH International Case 684 Tractor.

Operator Manual Coverage:

Operational instructions, safety precautions, and basic maintenance for the IH International Case 684 Tractor.

Repair Manual Estimated Pages:

Approx. 600+ pages (typical for this type of comprehensive factory manual).

Operator Manual Estimated Pages:

Approx. 100-150 pages (typical for this type of operator manual).

Repair Manual Type:

Factory Service Manual (FSM) / Workshop Manual

Operator Manual Type:

Operator Manual / Owner's Manual

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Engine Systems:

Disassembly, inspection, assembly, troubleshooting, specifications for IH D-239 and D-268 diesel engines.

Fuel System:

Injection pump, injectors, fuel filters, fuel lines, troubleshooting.

Cooling System:

Radiator, water pump, thermostat, fan, hoses, troubleshooting.

Lubrication System:

Oil pump, oil filter, oil passages, oil pressure troubleshooting.

Transmission System:

Gearbox disassembly, inspection, repair, fluid specifications, troubleshooting for various transmission options.

Clutch System:

Clutch assembly, pressure plate, friction disc, release bearing, adjustment, replacement.

Hydraulic System:

Hydraulic pump, valves, cylinders, remote controls, PTO hydraulics, troubleshooting, fluid specifications.

Steering System:

Power steering pump, steering cylinder, steering linkage, troubleshooting, hydraulic fluid.

Braking System:

Brake master cylinder, brake calipers/drums, brake lines, parking brake, troubleshooting.

Electrical System:

Wiring diagrams, starter, alternator, battery, lighting, ignition, troubleshooting, component testing.

Front Axle And Steering:

Front axle components, kingpins, steering knuckles, alignment, troubleshooting.

Rear Axle And Final Drives:

Rear axle housing, differential, final drive gears, troubleshooting, lubrication.

Power Take Off Pto:

PTO engagement, gears, shaft, maintenance, troubleshooting.

Hitch And Drawbar:

Three-point hitch operation, adjustment, drawbar specifications.

Operator Station And Controls:

Dashboard, levers, pedals, seat, safety features.

Bodywork And Sheet Metal:

Hood, fenders, platform, mounting and removal procedures.

Routine Maintenance:

Oil changes, filter replacements, lubrication points, fluid level checks, pre-operation checks.

Troubleshooting Guides:

Systematic diagnostic procedures for common and uncommon issues.

Disassembly And Assembly:

Step-by-step instructions for component removal, overhaul, and reinstallation.

Component Rebuilding:

Detailed procedures for rebuilding engines, transmissions, hydraulic pumps, etc.

Adjustment Procedures:

Engine timing, clutch, brakes, hydraulic controls, PTO engagement.

Torque Specifications:

Torque values for all critical fasteners.

Wiring Diagrams:

Complete electrical system schematics with component identification.

Special Tool Requirements:

Identification of specialized tools needed for certain repair procedures.

Depth Of Coverage:

Comprehensive, from basic operation and maintenance to in-depth engine, transmission, and hydraulic overhauls.

Diagnostics Level:

Advanced diagnostics and troubleshooting for all major systems.

Rebuild Instructions:

Complete rebuild instructions for all major mechanical and hydraulic components.

Technical Bulletins:

May include references to technical service bulletins (TSBs) for known issues and fixes.

📊 Manual Specifications

File Format:

PDF (Portable Document Format)

Searchable Text:

Yes (as stated in product description)

Bookmarks:

Yes (as stated in product description)

Index:

Yes (as stated in product description)

Print Quality:

Improved Quality (as stated in product description), suitable for printing.

Binding Type:

N/A (Digital PDF Download)

Paper Type:

N/A (Digital PDF Download)

⚙️ Engine Specifications

Engine Make Model:

International Harvester D-239 / D-268 Diesel

Engine Type:

Naturally Aspirated, Indirect Injection Diesel

Displacement D239:

3.8 Liters (233.3 cubic inches)

Displacement D268:

4.2 Liters (257.7 cubic inches)

Horsepower D239 Rated:

Approx. 60-70 PTO HP (varies by specific configuration and year)

Horsepower D268 Rated:

Approx. 70-80 PTO HP (varies by specific configuration and year)

Torque Specifications:

Refer to service manual for specific engine torque values for critical components.

Fuel Type:

Diesel Fuel

Injection System:

Bosch inline or distributor type injection pump (model dependent)

Fuel Filter Part Number:

Refer to manual for specific part numbers (e.g., Fleetguard LF3000 series or equivalent).

🔧 Transmission

Transmission Type:

Manual Synchromesh

Gear Speeds:

8-speed (4 forward gears x 2 range selector) or 16-speed (4 forward gears x 2 range selector x 2 Hi-Lo splitter).

Transmission Options:

Certain models offered a PowerShift or other advanced transmission variants, check specific model details.

Pto Options:

Standard 540 RPM PTO, optional 1000 RPM PTO, and/or independent PTO (IPTO).

Transmission Fluid Type:

Refer to manual for specific IH specification or API GL-4 rated tractor hydraulic fluid/transmission oil.

Transmission Fluid Capacity:

Refer to manual (typically around 40-50 liters or 10-13 US gallons).

📐 Dimensions

Overall Length:

Approx. 3.6 meters (142 inches) without front weights.

Overall Width:

Approx. 1.8 meters (71 inches) at rear wheels, adjustable.

Wheelbase:

Approx. 2.1 meters (84 inches).

Operating Weight:

Approx. 2500-2900 kg (5500-6400 lbs) depending on configuration and ballast.

Drawbar Horsepower:

Typically around 55-65 DBHP.

Pto Horsepower:

Typically around 60-75 PTO HP.

🛡️ Safety Features

Rollover Protection:

Optional Roll-Over Protective Structures (ROPS) available and highly recommended.

Braking System Type:

Hydraulically actuated, wet disc brakes (in rear axle housing) for service brakes; mechanical parking brake.

Operator Station Design:

Designed with operator visibility and ergonomic controls in mind. Seat belts may be optional or integrated with ROPS.

Lighting:

Headlights, tail lights, and warning lights as per safety regulations.

💡 Technology Features

Infotainment System:

N/A (Tractor from the 1970s/80s, no modern infotainment system).

Driver Assistance Features:

N/A (Tractor from the 1970s/80s, no modern driver assistance features).

Connectivity Options:

N/A (Tractor from the 1970s/80s, no modern connectivity).

🔧 Maintenance

Engine Oil Change Interval:

Typically every 100-250 operating hours or annually, depending on usage and oil quality.

Engine Oil Filter Replacement:

Replace at every engine oil change.

Fuel Filter Replacement:

Every 250-500 hours or as needed based on fuel quality and system priming.

Transmission Hydraulic Fluid Change:

Typically every 500-1000 operating hours or every 2 years.

Air Filter Maintenance:

Service at regular intervals, depending on dust conditions; inspect and clean/replace as per manual.

Engine Oil Specification:

Refer to manual; typically API CD or CE rated multi-grade diesel engine oil (e.g., 15W-40).

Transmission Hydraulic Fluid Specification:

Refer to manual; IH Hy-Tran fluid or equivalent API GL-4 rated Universal Tractor Transmission Oil (UTTO).

Coolant Specification:

Ethylene glycol-based antifreeze coolant with corrosion inhibitors, typically a 50/50 mix with distilled water.

Grease Specification:

General purpose lithium-based grease, NLGI #2 is common.

Common Wear Items:

Clutch wear, hydraulic pump output degradation, PTO clutch pack wear, injector pump seals.

Electrical Gremlins:

Older wiring harnesses can degrade, leading to intermittent electrical issues. Check grounds and connections.

Seals And Gaskets:

Aging seals in engine, transmission, and hydraulics can lead to leaks.

📚 Vehicle History

Brand Origin:

International Harvester (IH), a major American manufacturer of agricultural and construction equipment.

Series Introduction:

The 684 was part of IH's comprehensive tractor lineup, often succeeding earlier models and evolving from the 44 and 46 series tractors.

Case Acquisition:

Following the merger of Case and IH, tractors like the 684 continued production and branding under the Case IH name, sometimes with minor updates.

Production Years:

Primarily produced from the late 1970s into the 1980s.

Manufacturing Locations:

Often manufactured in IH/Case IH plants in North America and Europe.

🏆 Awards & Recognition

Awards And Certifications:

While specific awards for the 684 model are not widely publicized, IH tractors of this era were recognized for their reliability and robust engineering, forming the backbone of many farming operations.