🏷️ Basic Information

Make:

IH (International Harvester) / David Brown

Model:

1390 / 1394

Model Codes:

Not explicitly provided in product data, but typically associated with IH/David Brown model series.

👋 Introduction

Market Position:

The IH David Brown 1390/1394 tractors were positioned as robust, versatile agricultural machines designed for medium-to-heavy duty farm work. They would have competed with similar offerings from manufacturers like John Deere, Massey Ferguson, Ford, and Fiat in their respective market segments during their production era.

Competitive Analysis:

Key competitive advantages of IH David Brown tractors often included their robust build quality, reliable mechanicals, and often competitive pricing. The 1390/1394 series would have been evaluated on power output, hydraulic capacity, gearbox options, and operator comfort compared to rivals.

Key Features:

The IH David Brown 1390/1394 models are known for their powerful diesel engines, durable transmissions, strong hydraulic systems capable of handling various implements, and a straightforward, functional operator station. Their build quality emphasizes longevity and ease of maintenance.

Target Audience:

Farm owners, mechanics, agricultural workshops, and tractor enthusiasts who need to maintain, repair, or restore IH David Brown 1390 and 1394 tractors.

Ease Of Use Description:

The manual is described as making service and repair jobs easy to do with very easy-to-follow step-by-step instructions and pictures on all areas of servicing and repairs.

📋 Manual Details

Coverage Areas:

Complete service and repair procedures A-Z, all engines, transmissions, trim, and models covered.

Page Count:

Not specified, but described as 'complete' and covering 'every' procedure.

Manual Type:

Workshop Service Repair Manual

Language:

English (implied by product description and typical manual availability)

Format:

PDF Download

Delivery Method:

Instant email delivery after payment confirmation.

Licensing Terms:

Downloadable and yours to keep forever. Can be printed, allowing access to specific pages or the entire document.

Customer Satisfaction:

Customer Satisfaction Guaranteed.

📖 Manual Coverage

Systems Covered:

Engine mechanical and systems (e.g., fuel, lubrication, cooling), transmission (gearbox, hydraulics), drivetrain (rear axle, PTO), braking system, steering system, hydraulic system (lift, auxiliary services), electrical system (starting, charging, lighting, instrumentation), chassis, bodywork, and operator controls.

Procedures Included:

Routine maintenance, scheduled servicing, troubleshooting, diagnostics, component removal and installation, disassembly and assembly, rebuilding procedures, adjustments, torque specifications, wiring diagrams, and component identification.

Technical Depth:

Comprehensive, covering from basic maintenance to in-depth repair and overhaul of all major vehicle systems. Designed for both DIY owners and professional technicians.

Troubleshooting Guide:

Includes detailed troubleshooting guides with symptom-based diagnostics to help identify and resolve common problems efficiently.

Electrical System Coverage:

Comprehensive coverage of the entire electrical system, including starter motor, alternator, battery, lighting circuits, ignition (if applicable), and instrument panel wiring diagrams.

Hydraulic System Coverage:

Detailed coverage of the tractor's hydraulic system, including the main hydraulic pump, control valves, hydraulic lift system (3-point hitch), auxiliary hydraulic couplers, and troubleshooting for hydraulic performance issues.

📊 Manual Specifications

File Format:

PDF (Portable Document Format)

Print Quality:

High quality, suitable for printing individual pages or the entire manual. Implies clear text and legible images.

Binding Type:

Not applicable to digital download, but if printed would typically be comb-bound or perfect-bound for workshop use.

Paper Type:

Not applicable to digital download, but for a printed manual, robust paper suitable for workshop environments would be expected.

Computer Requirements:

Compatible with All PC & MAC Computers, tablets, and mobile phones. Requires Adobe Reader (free download).

Searchability Features:

PDF format typically allows for text searching, making it easier to find specific information within the manual.

⚙️ Engine Specifications

Primary Engine:

Typically powered by an International Harvester (IH) designed diesel engine. Specific models within the 1390/1394 range would feature variants of these engines, often 4 or 6 cylinder.

Rated Engine Power:

Exact horsepower figures vary by specific engine variant and configuration, but models in this class generally ranged from approximately 80-100 PTO horsepower. Torque would be commensurate with engine displacement and design.

Fuel System:

Typically a direct injection diesel fuel system with a high-pressure injection pump (e.g., rotary or inline) and fuel injectors. Filtration would be critical. Common fuel filters would be specified in the manual.

Cooling System:

Water-cooled system employing a radiator, fan, thermostat, water pump, and coolant hoses. Coolant type and mixture (e.g., ethylene glycol based) will be detailed in the manual.

Lubrication System:

Pressurized lubrication system with an oil pump, oil filter, oil cooler (depending on specification), and oil passages to lubricate bearings and moving parts. Engine oil type and capacity are critical specifications.

Engine Type:

Naturally Aspirated Diesel Engine

Engine Accessories Coverage:

Detailed procedures for servicing and replacing engine accessories such as the starter motor, alternator, fuel injection pump, fuel injectors, glow plugs, and cooling fan.

Engine Disassembly Assembly:

Step-by-step instructions for the complete disassembly and reassembly of the engine, including cylinder head removal/installation, piston and connecting rod service, crankshaft installation, and bearing clearance checks.

🔧 Transmission

Transmission Type:

Likely a robust, mechanical gearbox. Common configurations for tractors of this era included constant mesh or synchronized manual transmissions with multiple forward and reverse gears, often featuring a synchronized multi-speed range transmission (e.g., 8 or 12 forward gears).

Optional Features:

Some models may have offered an additional range splitter (e.g., Hi-Lo or PowerShift) for on-the-go gear changes within a selected gear, and a power take-off (PTO) drive, often with multiple speeds (e.g., 540/1000 RPM).

Transmission Fluid Spec:

The manual would specify the correct transmission fluid type, often a universal tractor transmission fluid (UTTF) or a specific IH/David Brown approved fluid. Fluid capacity and change intervals are crucial.

Drivetrain Type:

2WD (Two-Wheel Drive) is standard; 4WD (Four-Wheel Drive) may be available on specific variants or as an option.

📐 Dimensions

Overall Length:

Specific dimensions (length, width, height) would vary by configuration but are typical of a medium-frame tractor of its class. Manual would contain precise measurements.

Ground Clearance:

Variable depending on tire size and configuration; manual would specify for different tire options.

Operating Weight:

Operating weights would vary depending on fitted options and ballast but are generally in the range of 4,000-5,500 kg (8,800-12,100 lbs).

Wheelbase:

Wheelbase specifications are important for stability and maneuverability and would be detailed in the manual.

Axle Load Ratings:

The manual would provide axle load ratings and tire pressure recommendations for safe operation and maximum load carrying capacity.

🛡️ Safety Features

Safety Standards:

Tractors of this era were built to relevant agricultural machinery safety standards of their time. The manual would detail safety precautions, operational safety guidelines, and component safety features.

Active Safety Features:

Features like independent braking systems for each rear wheel, differential lock, power steering, and robust PTO engagement mechanisms contribute to active safety. The manual would guide on their proper use.

Passive Safety Features:

Includes features like the sturdy chassis construction, integrated operator platform (though ROPS/cab might be optional or aftermarket for some units), and appropriate lighting for visibility. The manual would cover maintenance of these features.

💡 Technology Features

Infotainment Features:

Tractors from this era are typically very basic in terms of infotainment. Features would be limited to functional instrumentation like a tachometer, engine temperature gauge, oil pressure gauge, fuel gauge, and warning lights. Radio or audio systems would be rare and likely aftermarket.

Driver Assistance Features:

Features like power steering and potentially adjustable suspension seats would be the primary driver assistance technologies. The manual would cover their operation and maintenance.

Connectivity Features:

No modern connectivity features such as Bluetooth or USB ports would be present. The electrical system would focus on powering essential functions like lights, starter, and charging.

🔧 Maintenance

Service Intervals:

The manual would provide detailed service intervals for engine oil and filter changes, transmission and hydraulic fluid changes, air filter replacement, fuel filter replacement, coolant checks, greasing points, and any specific component servicing schedules. Typical engine oil changes might be every 100-250 hours depending on operating conditions.

Engine Oil Spec:

Engine oil specifications would typically be for a heavy-duty diesel engine oil, likely in SAE 15W-40 or 30 viscosity grade, meeting API CG-4 or similar specifications. Capacities for engine, transmission, and hydraulics would be listed.

Hydraulic Fluid Spec:

Hydraulic and transmission fluid specifications would often be for a Universal Tractor Transmission Fluid (UTTF) or a specific IH/David Brown approved hydraulic oil. Filter part numbers for all fluid systems would be provided.

Common Issues:

Common issues for tractors of this age and design can include wear in the clutch, hydraulic pump or seal leaks, electrical component failures (e.g., starter, alternator), and wear in the transmission or differential. The manual would offer diagnostic steps and repair procedures for these.

Lubrication Points:

Detailed diagrams and lists of grease points (e.g., kingpins, steering linkages, PTO shaft, hitch components) and recommended grease types would be included to ensure proper lubrication and prevent wear.

Component Rebuild Procedures:

Includes detailed procedures for rebuilding major components such as the engine, transmission, hydraulic pump, and final drives, with exploded views and part identification.

Torque Specifications:

Extensive list of torque specifications for all critical fasteners throughout the tractor, ensuring correct assembly and preventing component damage.

📚 Vehicle History

Brand Heritage:

International Harvester (IH) was a pioneering American manufacturer of agricultural machinery, known for its robust and innovative tractors. David Brown was a British tractor manufacturer acquired by IH, bringing its own engineering expertise and model lines into the IH portfolio.

Model Evolution:

The 1390/1394 models represent a lineage of IH/David Brown tractors, likely evolving from earlier models with improved engines, transmissions, and hydraulic systems to meet the demands of modern farming practices for their time. They were part of a broader range of IH agricultural tractors.

Production Period:

Production periods for these models typically fall within the late 1970s and 1980s, a significant era for both IH and David Brown brands before the eventual restructuring of IH and sale of its agricultural division.

Market Segment:

Utility/Row Crop Tractor.