IH International Harvester 21256 Tractor Service Repair Manual

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Stichworte: 21256 IH International International Harvester Tractor

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Beschreibung

This manual covers the International Harvester 21256 Tractor, a robust utility tractor renowned for its durability and versatility in agricultural applications. International Harvester has a long legacy of producing dependable farm equipment, and the 21256 exemplifies this heritage with its mechanical simplicity and strong construction, designed for a wide range of farm tasks. While specific production years are not detailed, tractors of this designation were common from the 1960s through the 1970s, competing with other major manufacturers of the era. Its design prioritizes longevity and ease of service, making it a reliable choice for demanding work. The purpose of this comprehensive Service and Repair Manual is to provide detailed information for the maintenance and repair of the International Harvester 21256 Tractor. It covers all essential systems, including engine, transmission, hydraulics, electrical, fuel, cooling, braking, steering, chassis, and operator station. Within its extensive pages, you will find procedures for routine maintenance, diagnostic troubleshooting, component overhaul, and adjustments, along with specifications and special tool requirements. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their tractor.

🏷️ Basic Information

Identification

Make:

International Harvester

Model:

21256 Tractor

Product Type:

Service Repair Manual

👋 Introduction

Market Position

Tractor Segment:

Utility Tractor

Competitive Analysis

Competitors:

During its production era, the IH 21256 would have competed with models from John Deere, Ford, Massey Ferguson, and Case IH.

Key Features

Durability:

International Harvester tractors are renowned for their robust construction and longevity.

Versatility:

Designed for a wide range of agricultural tasks, from plowing to harvesting and general farm work.

Mechanical Simplicity:

Often featured straightforward mechanical systems, making them relatively easier to service with the right documentation.

📋 Manual Details

Coverage Areas

Primary Coverage:

Complete service and repair for the International Harvester 21256 Tractor

Page Count

Estimated Pages:

Varies based on specific edition, but comprehensive service manuals typically range from 500-1500 pages.

Manual Type

Type:

Service and Repair Manual

Language

Language:

English

Format

Format:

PDF (Digital Download)

📖 Manual Coverage

Systems Covered

Engine Repair:

Detailed procedures for engine overhaul, diagnosis, tuning, and component replacement.

Transmission And Drivetrain:

Coverage of clutch, gearbox, differential, final drives, PTO (Power Take-Off) systems.

Hydraulic System:

Repair, maintenance, and troubleshooting of the hydraulic pump, cylinders, valves, and fluid system.

Electrical System:

Wiring diagrams, component testing, charging system, starting system, lighting, and instrument panel.

Fuel System:

Diesel injection system service, fuel filters, fuel tank and lines.

Cooling System:

Radiator, fan, thermostat, water pump, and coolant specifications.

Braking System:

Service and repair of mechanical and hydraulic braking components.

Steering System:

Diagnosis and repair of steering linkage and components.

Chassis And Frame:

Inspection and repair of the tractor frame and chassis components.

Operator Station:

Seat, controls, and dashboard assembly.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, lubrication points, and general inspection procedures.

Diagnostic Troubleshooting:

Systematic approaches to identify and resolve common and uncommon issues.

Component Overhaul:

Detailed instructions for complete disassembly, cleaning, inspection, and reassembly of major components.

Adjustment And Calibration:

Procedures for setting clearances, timing, fluid levels, and control linkages.

Special Tool Requirements:

Identification and usage of specialized tools for specific repair tasks.

Technical Depth

Depth:

Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds.

📊 Manual Specifications

File Format

Digital Format:

Print Quality

Quality:

High-resolution scans of original factory manuals, ensuring clear diagrams and text.

Binding Type

Binding:

N/A (Digital PDF)

Paper Type

Paper:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Likely a diesel engine, common for IH tractors of this class. Specific displacement and model will vary.

Performance

Horsepower:

Estimated range typically between 40-70 PTO horsepower, depending on the specific engine variant and configuration.

Torque:

Torque figures would be optimized for farm implement power requirements.

Fuel System

Fuel Type:

Diesel

Injection System:

Likely a Bosch or Simms inline injection pump system.

🔧 Transmission

Standard

Transmission Type:

Likely a manual transmission, potentially with multiple ranges (e.g., 8-speed or 16-speed). A range splitter or creeper gear might be an option.

Optional

Optional Features:

Possible options might include a live PTO or specific transmission configurations for different implement requirements.

Features

Pto Speed:

Standard PTO speeds (e.g., 540 RPM or 1000 RPM) are expected, with options for live PTO.

📐 Dimensions

Exterior

Wheelbase:

Varies by configuration, but typical for utility tractors of the era.

Weights

Operating Weight:

Estimated operating weight would be in the range of 4,000-6,000 lbs (1,800-2,700 kg).

🛡️ Safety Features

Ratings

Rollover Protection:

Original models may not have included factory ROPS (Rollover Protective Structure), but aftermarket options are often available. The manual will detail if factory ROPS was an option.

Active Features

Brake System:

Typically mechanical or hydraulic drum brakes, or potentially disc brakes on later models.

Passive Features

Operator Station Design:

Ergonomic considerations for the operator's safety and comfort, though less advanced than modern standards.

💡 Technology Features

Infotainment

Infotainment System:

Basic operator instrumentation; no infotainment system typical for the era.

Driver Assistance

Driver Assistance Features:

Limited to mechanical aids for operation; no electronic driver assistance.

Connectivity

Connectivity Options:

None.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Typically every 100-250 operating hours, depending on operating conditions. Manual will specify.

Fuel Filter Replacement:

Recommended every 250-500 operating hours or as needed based on fuel quality. Manual will specify.

Hydraulic Fluid Change:

Typically annually or every 500-1000 operating hours. Manual will specify.

Fluid Specifications

Engine Oil Grade:

Likely API CD or CE rated diesel engine oil, SAE 15W-40 or 30. Manual will provide exact specifications.

Hydraulic Fluid Type:

Tractor Hydraulic Fluid (THF) or a suitable universal tractor transmission oil (UTTO). Manual will specify.

Coolant Type:

Ethylene glycol based antifreeze mixture, typically 50/50 with distilled water. Manual will provide.

Known Issues

Engine Wear:

As with any older diesel, potential for injector wear, ring wear, and head gasket issues.

Hydraulic Leaks:

Common in older tractors due to seal degradation and wear on hydraulic components.

Transmission Synchronizers:

Wear on synchronizers in manual transmissions can lead to difficult shifting.

Electrical Connections:

Corrosion and loose connections are frequent issues in older agricultural equipment exposed to the elements.

📚 Vehicle History

Brand Heritage

Ih Legacy:

International Harvester (IH) has a long and storied history in agricultural machinery, known for producing reliable and powerful farm equipment.

Model Evolution

Tractor Lineup:

The 21256 likely belongs to a series of utility tractors that evolved from earlier IH designs, incorporating advancements in engine technology and hydraulics.

Production

Production Era:

Specific production years are not provided, but models with this numbering convention were common from the 1960s through the 1970s.

🏆 Awards & Recognition

Recognitions

Brand Reputation:

International Harvester as a brand is historically recognized for producing durable and dependable farm machinery.