🏷️ Basic Information

Make:

Case IH

Model:

2390, 2394, 2590, 2594

Product Type:

Service Repair Manual Download

👋 Introduction

Target Audience:

Designed for owners, operators, and service technicians of Case IH 2390, 2394, 2590, and 2594 tractors seeking detailed repair and maintenance information.

Instructional Quality:

Features easy-to-read text sections with top-quality diagrams and step-by-step instructions, including highly detailed exploded views.

Benefit:

Empowers users to perform accurate maintenance and repairs, understand their machinery better, and make informed decisions, mirroring the knowledge of factory-trained technicians.

Market Segment:

These tractors competed in the high-horsepower row-crop and utility tractor market segment against manufacturers like John Deere, New Holland, and Massey Ferguson during their production era.

📋 Manual Details

Primary Coverage:

Complete factory service and repair for Case IH 2390, 2394, 2590, and 2594 tractors.

Estimated Pages:

Hundreds of pages (printable in entirety or sections).

Type:

Official Full Factory Service Repair Manual / Workshop Manual

Type Clarification:

A comprehensive workshop manual providing detailed service and repair information, distinct from an owner's manual or parts catalog.

Language:

English

Format:

PDF (Downloadable)

📖 Manual Coverage

Powertrain:

Engine overhaul, fuel system, lubrication, cooling system, exhaust system.

Drivetrain:

Transmission (powershift, hydrostatic if applicable), final drives, differentials, PTO (Power Take-Off) systems.

Hydraulics:

Hydraulic system, pumps, valves, cylinders, hydraulic oil maintenance, troubleshooting.

Electrical:

Starting and charging systems, wiring diagrams, lighting, instrumentation, control modules, troubleshooting.

Chassis And Steering:

Front axle, steering system, brakes (service and parking), wheels and tires.

Operator Station:

Cab, controls, seating, heating and air conditioning (HVAC) systems.

Maintenance:

Routine maintenance, lubrication charts, fluid checks and changes, filter replacements, scheduled servicing.

Repair And Overhaul:

Step-by-step procedures for complete disassembly, inspection, repair, assembly, and reinstallation of all major components and systems.

Troubleshooting:

Diagnostic procedures, symptom-based troubleshooting charts, identification of common problems and their solutions.

Technical Specifications:

Critical specifications, torque values, clearances, tolerances, fluid capacities, pressures.

Engine Disassembly:

Complete engine rebuild procedures, including cylinder head removal and overhaul, piston and connecting rod installation, crankshaft and bearing service, camshaft timing, and engine assembly.

Transmission Repair:

Detailed steps for servicing powershift components, clutch packs, gear sets, and the hydraulic control unit. Includes troubleshooting for shifting issues.

Hydraulic System Diagnostics:

Procedures for testing hydraulic pump output, pressure regulation valves, and cylinder/motor performance. Includes schematics and flow charts.

Electrical Schematics:

Comprehensive wiring diagrams for all electrical circuits, component identification, and troubleshooting of electrical faults.

Brake System Service:

Procedures for inspecting and replacing brake pads/discs, hydraulic brake system maintenance, and parking brake adjustments.

Pto Service:

Maintenance and repair of the rear Power Take-Off unit, including clutch pack service and engagement mechanisms.

Front Axle And Steering Repair:

Service for the front axle, including kingpins, steering linkage, and planetary hubs. Troubleshooting steering system issues.

Fuel System Overhaul:

Detailed procedures for fuel filter replacement, bleeding the fuel system, and overhaul of the injection pump and injectors.

Cooling System Service:

Radiator, water pump, thermostat, and fan maintenance and replacement procedures. System flushing and coolant type specifications.

Lubrication System Service:

Oil pump inspection, oil cooler service, and oil passage cleaning during engine overhaul.

Steering System Repair:

Service for steering cylinders, pumps, control valves, and tie rod ends. Troubleshooting steering responsiveness issues.

3-Point Hitch Service:

If equipped with a 3-point hitch, the manual will cover its hydraulic control, lift arms, and stabilizers.

Operator Station Maintenance:

Procedures for cab mounting, interior trim, seat adjustment/replacement, and HVAC system servicing (if equipped).

Depth:

Comprehensive coverage from basic maintenance to complete engine, transmission, and hydraulic system overhauls. Suitable for both professional technicians and experienced DIY mechanics.

Diagnostic Tools:

While not listing specific diagnostic tools, the manual's depth implies the use of pressure gauges, multimeter, and specific measurement tools for component checks.

📊 Manual Specifications

Format Details:

PDF format, ensuring compatibility with most modern devices.

Searchability:

PDF format usually allows for text searching, making it easier to find specific information quickly.

Printable:

Fully printable, allowing users to print the entire manual or specific pages as needed for workshop use.

Zoom Capabilities:

Supports zoom in/out functionality for clear viewing of diagrams and text.

Delivery:

Instant download, providing immediate access upon purchase.

Requirements:

Adobe PDF Reader and WinZip (or equivalent unzipping software).

Operating Systems:

Compatible with all versions of Windows and Mac operating systems.

Type:

Digital Download (PDF). When printed, it can be bound by the user as desired (e.g., comb binding, three-ring binder).

⚙️ Engine Specifications

Engine Type:

Likely Case IH/Cummins turbocharged diesel engines, specific displacement and configuration will vary by model (e.g., 2390/2394 often featured 400 series engines, 2590/2594 potentially larger displacement).

Horsepower Range:

Expected to range from approximately 110-150+ PTO horsepower depending on the specific model and engine variant.

Torque Characteristics:

Engines designed for high torque at low RPMs to handle heavy draft loads and pull-type implements effectively.

Fuel Type:

Diesel.

Injection System:

Likely Bosch rotary or inline injection pumps with direct injection.

Engine Family:

Likely utilized engines from Case IH's own 400 series or Cummins C series / 4BT/6BT families, renowned for their power and reliability in agricultural applications.

🔧 Transmission

Type:

Case IH Powershift transmission (e.g., 16-speed or 18-speed) is common for these models, offering on-the-go gear changes.

Type:

While Powershift was dominant, some regional variations or specific configurations might have offered other options, though less common for these higher horsepower models.

Engagement:

Powershift capabilities for efficient operation without clutching.

📐 Dimensions

Operating Weight:

These are heavy-duty tractors; operating weights would typically be in the range of 15,000 - 20,000+ lbs (6,800 - 9,000+ kg) depending on configuration and ballast.

💡 Technology Features

Features:

Basic operator comfort features, likely with radio options. These models predate advanced digital infotainment systems common today.

Features:

Mechanical or hydraulic power steering. Traction aids would be mechanical (e.g., front wheel assist).

🔧 Maintenance

Engine Oil And Filter:

Typically every 250-500 hours, depending on operating conditions and oil type. Specific interval will be detailed in the manual.

Hydraulic Oil And Filter:

Generally every 1000-2000 hours, with regular checks for contamination and level.

Fuel Filters:

Recommended replacement at intervals based on fuel quality, often with oil changes or annually.

Engine Oil:

API CG-4 or CH-4 rated diesel engine oil, viscosity grade typically SAE 15W-40. Specific Case IH lubricant numbers are usually recommended (e.g., Case IH Akcela).

Hydraulic Fluid:

Case IH Hy-Tran UTF (Universal Tractor Transmission fluid) or equivalent. Capacities can be substantial (e.g., 20-30 gallons).

Transmission Fluid:

Refer to hydraulic fluid specification; the Powershift transmission and hydraulic systems often share a common fluid reservoir and type (Hy-Tran UTF).

Coolant:

Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water, for freeze protection and corrosion inhibition. Specific type (e.g., ELC - Extended Life Coolant) might be specified.

Differential And Final Drive Oil:

May use a dedicated gear oil, or in some designs, share hydraulic fluid. Manual will specify.

Common Wear Points:

Potential for wear in powershift clutches, hydraulic pump and valve wear, alternator/starter issues, and front axle pivot wear, especially on high-hour machines. Detailed diagnostics and repair procedures are crucial.

📚 Vehicle History

Legacy:

Case IH, with roots tracing back to J.I. Case Company founded in 1842, is a long-standing manufacturer of agricultural equipment known for durability and innovation.

Series Context:

The 23xx and 25xx series tractors represent a significant era for Case IH, often built as robust, powerful machines for large-scale farming operations, succeeding earlier Magnum or 94 series tractors and paving the way for modern Magnum series.

Typical Years:

These models were primarily produced in the late 1980s and early to mid-1990s.