International Harvester 766 Tractor WSM Service Manual

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Typ: Tractor

Anbieter:

Art.-Nr: 81505

Stichworte: 766 Agriculture Farmall Series International Harvester Tractor Tractors

Produktvarianten

Beschreibung

The International Harvester 766 Tractor, produced from approximately 1969 to 1971, represents a robust and versatile utility tractor from a manufacturer renowned for its agricultural machinery. This model, part of IH's well-regarded 06 and 66 series, typically features a direct injection diesel engine, offering dependable power for a range of farming and operational tasks. Its engineering emphasizes reliability and performance, making it a capable workhorse for its intended segment. The 766 Tractor is equipped with a standard 16-speed Synchromesh manual transmission, with options for power steering and varying PTO speeds, further enhancing its adaptability. This comprehensive Service Manual (WSM) provides in-depth technical information for the International Harvester 766 Tractor. It covers all essential systems, including detailed procedures for engine overhaul, fuel, cooling, lubrication, electrical, transmission, hydraulic, PTO, brake, and steering systems. The manual includes guidance on routine maintenance, troubleshooting, major repairs, component rebuilds, and features detailed wiring diagrams, torque specifications, and information on special tools. Designed for owners, mechanics, and technicians, this English-language manual offers step-by-step instructions and diagnostic charts to facilitate efficient maintenance and repair, ultimately empowering users to keep their tractor in optimal working condition and reduce reliance on external service providers.

🏷️ Basic Information

Identification

Make:

International Harvester

Model:

766 Tractor

Product Type:

Service Manual (WSM)

👋 Introduction

Market Position

Target Audience:

Tractor owners, mechanics, and maintenance personnel seeking to perform repairs and maintenance.

Segment:

Utility Tractor

Competitive Analysis

Value Proposition:

Enables users to save significant costs by performing their own repairs, empowering them with knowledge and skills.

Key Features

Manual Benefit 1:

Reduces reliance on expensive mechanic services for routine and complex repairs.

Manual Benefit 2:

Increases user knowledge and familiarity with the tractor's systems.

Manual Benefit 3:

Provides a convenient and accessible resource for garage or workshop use.

📋 Manual Details

Coverage Areas

Language:

English

File Format:

Delivery Method:

Instant Download

Printability:

Full Printable

Software Requirements:

Adobe PDF Reader

Operating System Compatibility:

All Versions of Windows & Mac

Manual Type

Manual Type:

Service Manual / Repair Manual / Workshop Manual

📖 Manual Coverage

Systems Covered

Engine Overhaul:

Complete engine disassembly, inspection, repair, and reassembly procedures for all major engine components.

Fuel System:

Detailed diagnostics and repair for the fuel injection system, pumps, filters, and lines.

Cooling System:

Service procedures for the radiator, thermostat, water pump, hoses, and fan assembly.

Lubrication System:

Information on oil pump, oil filter, oil galleries, and lubrication system troubleshooting.

Electrical System:

Comprehensive wiring diagrams, troubleshooting guides for starting, charging, lighting, and accessory circuits.

Transmission Manual:

Repair and overhaul procedures for the manual transmission, including clutch, gear selection, and power take-off (PTO).

Transmission Power Steering:

Service information for hydrostatic power steering systems and associated components.

Hydraulic System:

In-depth coverage of the tractor's hydraulic system, including pump, reservoir, control valves, and actuators (e.g., hitch).

Power Take Off Pto:

Service and repair for the PTO engagement, drive shafts, and clutch.

Brake System:

Maintenance and repair of the tractor's braking system, including internal expanding shoe brakes and associated linkage.

Steering System:

Detailed instructions for steering linkage, components, and troubleshooting.

Front Axle:

Service and repair for the front axle assembly, including kingpins and steering knuckles.

Rear Axle Differential:

Procedures for the rear axle, differential, and final drives.

Chassis Frame:

Information on the tractor's frame and structural integrity.

Body Sheet Metal:

Repair and replacement guidance for fenders, hood, and other body panels.

Operator Station:

Details on the operator's seat, controls, dashboard, and safety features.

Engine Component Identification:

Identification of all engine parts, including pistons, rings, bearings, camshaft, crankshaft, and cylinder heads.

Procedures Included

Routine Maintenance:

Comprehensive guidance on all routine maintenance tasks, including fluid changes, filter replacements, and lubrication.

Troubleshooting:

Step-by-step diagnostic procedures for identifying and resolving common and uncommon issues.

Major Repairs:

Detailed instructions for major component overhauls and repairs, suitable for experienced mechanics.

Component Rebuilds:

Complete rebuild procedures for engines, transmissions, hydraulic pumps, and other key assemblies.

Wiring Diagrams:

High-quality, detailed electrical wiring diagrams for all tractor systems.

Torque Specifications:

Specific torque values for all critical fasteners and bolts.

Special Tools:

Identification and usage instructions for any specialized tools required for repairs.

Troubleshooting Charts:

Diagnostic charts correlating symptoms with potential causes and remedies.

Injector Timing:

Procedures for setting and adjusting fuel injector timing.

Governors:

Service and adjustment of engine speed governors.

Charging System Testing:

Testing and repair of the alternator and voltage regulator.

Starting System Testing:

Testing and repair of the starter motor and solenoid.

Hitch Adjustment:

Procedures for adjusting and servicing the tractor's three-point hitch system.

Brake Adjustment:

Detailed instructions for adjusting and maintaining the tractor's braking system.

Wheel Alignment:

Information on checking and adjusting front wheel alignment for optimal steering and tire wear.

Front End Loader Mounting:

While not a primary focus, the manual may contain information relevant to the tractor's chassis and hydraulic system compatibility with loaders.

Troubleshooting Charts Engine:

Specific charts for diagnosing engine performance issues like no-start, rough running, or power loss.

Troubleshooting Charts Hydraulic:

Charts for diagnosing hydraulic system malfunctions, such as slow operation or leaks.

Troubleshooting Charts Electrical:

Charts to aid in diagnosing electrical faults, from lighting to starter issues.

Technical Depth

Depth Of Coverage:

In-depth, professional quality, covering all aspects of repair and maintenance.

Instruction Style:

Easy-to-follow step-by-step instructions with illustrative pictures.

📊 Manual Specifications

File Format

Primary Format:

Searchability:

Likely searchable text within the PDF, enabling quick information retrieval.

Document Quality:

Professional quality, ensuring clarity and legibility of all content.

Print Quality

Page Quality:

Printable pages ensuring clear reproduction of text and diagrams.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Direct Injection Diesel

Engine Family:

International Harvester D-Series (e.g., D-239, DT-239, DT-268 depending on specific 766 variant)

Displacement:

Approx. 239 cu in (3.9 L) or 268 cu in (4.4 L) for turbocharged variants. Exact displacement dependent on specific engine option.

Engine Cycles:

4-Stroke Diesel

Performance

Horsepower Range:

Approximately 68-80 PTO HP (dependent on engine variant and configuration).

Fuel System

Fuel Injection Type:

Direct Injection, typically with rotary or inline fuel injection pumps.

🔧 Transmission

Standard

Transmission Type Std:

16-speed Synchromesh Manual Transmission (Gear Drive)

Optional

Transmission Type Opt:

Optional: Power Steering (Hydrostatic) and certain variations might have PTO options.

Features

Pto Options:

Standard 540 RPM PTO, often with an optional 1000 RPM PTO available.

📐 Dimensions

Exterior

Wheelbase:

Approximately 86.6 inches (2200 mm)

Length:

Approximately 140 inches (3556 mm) without rear implement.

Width:

Approximately 70-80 inches (1778-2032 mm) depending on rear tire size and tread setting.

Height:

Approximately 95-100 inches (2413-2540 mm) to top of exhaust stack.

Weights

Operating Weight:

Approximately 6,500 - 7,500 lbs (2950 - 3400 kg) depending on configuration.

🔧 Maintenance

Service Intervals

Engine Oil Change Interval:

Typically every 100-250 operating hours, refer to manual for exact specification.

Hydraulic Fluid Change Interval:

Typically every 500-1000 operating hours, refer to manual for exact specification.

Fluid Specifications

Engine Oil Type:

API Service Classification CD or CE (e.g., SAE 15W-40 Diesel Engine Oil) - check manual for precise grade and specifications.

Hydraulic Fluid Type:

IH Hytran (or equivalent UTF - Universal Tractor Transmission Fluid) meeting IH B-6 specification.

Transmission Fluid Type:

IH Hytran or equivalent UTF, shared with hydraulic system in many configurations.

Coolant Type:

Ethylene Glycol based antifreeze, mixed with water. Refer to manual for specific freeze protection percentage and additive requirements.

Gear Oil Type:

Refer to manual for specifications for differential and final drive gear oil, likely SAE 90 or similar.

Known Issues

Common Issue 1:

Wear in the hydraulic system, particularly the pump or control valves, leading to loss of lifting capacity or steering assist.

Common Issue 2:

Potential for clutch wear and adjustment issues over time.

Common Issue 3:

Electrical system issues such as worn wiring or starter/alternator problems are common in older equipment.

Common Issue 4:

Engine component wear, especially in high-mileage or poorly maintained units, can lead to decreased power or oil consumption.

📚 Vehicle History

Brand Heritage

Manufacturer History:

International Harvester (IH) was a prominent American manufacturer of agricultural and construction machinery, known for its robust and reliable tractors.

Model Evolution

766 Series Placement:

The 766 was part of IH's popular 06 and 66 series, known for their performance and versatility in the mid-range tractor segment.

Production

Production Period:

Produced primarily in the late 1960s and early 1970s (approx. 1969-1971).