Target User:
Owners, mechanics, and technicians of the International Harvester 826 Tractor seeking comprehensive repair and maintenance guidance.
Value Proposition:
Offers factory-level accuracy and detail that third-party manuals may lack, crucial for specialized agricultural machinery.
Comprehensiveness:
Covers all aspects of the tractor, from routine maintenance to major overhauls, making it a single source for all service needs.
Ease Of Use:
Structured with a table of contents and clear indexing for efficient navigation and information retrieval.
Diagnostic Tools:
Equipped with troubleshooting sections that guide users through diagnosing and resolving mechanical and electrical issues.
Primary Coverage:
Full service, repair, maintenance, and troubleshooting for the International Harvester 826 Tractor.
Secondary Coverage:
Includes specific sections on wiring diagrams and maintenance schedules.
Estimated Page Count:
Varies by specific printing/edition, but comprehensive factory manuals typically range from 500-1000+ pages.
Type:
Factory Service Repair Manual (also referred to as Workshop Manual, Shop Manual).
Engine:
Detailed overhaul, troubleshooting, fuel system (carburetor/injection), ignition system, cooling system, lubrication system, engine specifications, and component testing.
Transmission:
Repair and adjustment of all transmission types (e.g., hydrostatic, manual), clutch, PTO, differential, and final drives.
Hydraulics:
Service and repair of the hydraulic system, including pump, valves, cylinders, and related components. Troubleshooting hydraulic issues.
Electrical:
Comprehensive wiring diagrams, troubleshooting guides for starting/charging systems, lighting, instruments, and accessories.
Steering And Brakes:
Service, repair, and adjustment of steering mechanisms (including power steering), braking systems (hydraulic, mechanical), and parking brake.
Chassis And Body:
Repair and maintenance of frame, axles, wheels, tires, fenders, operator station, and sheet metal.
Power Takeoff Pto:
Service and troubleshooting of both live and independent PTO systems.
Maintenance:
Routine maintenance, lubrication charts, fluid changes, filter replacements, and pre-operational checks.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and uncommon faults.
Repair:
Step-by-step repair instructions for all major components and systems, including complete engine and transmission rebuilds.
Adjustment:
Detailed instructions for adjusting brakes, clutch, PTO engagement, hydraulic pressures, and other critical settings.
Disassembly And Assembly:
Comprehensive guides for taking apart and reassembling all major components and sub-assemblies.
Depth:
Factory-level technical information, suitable for professional mechanics and advanced DIY users. Covers detailed diagnostics, component specifications, tolerances, and overhaul procedures.
Format:
PDF (Portable Document Format)
Searchability:
Typically features searchable text, allowing for quick information retrieval.
Print Readability:
Designed for clarity and readability when printed, with clear diagrams and text.
Binding:
Digital (no physical binding; user can print sections as needed).
Digital Medium:
Electronic document, viewable on computers, tablets, and smartphones.
Engine Options:
Typically equipped with International Harvester's own diesel engines, such as the D-239 (4-cylinder) or DT-360 (6-cylinder turbocharged), depending on the specific 826 variant (e.g., standard, hydro). Gasoline options may also exist for earlier models or specific configurations.
Displacement Diesel:
Commonly 239 cu in (3.9 L) for the D-239 and 360 cu in (5.9 L) for the DT-360.
Horsepower Diesel Typical:
Approx. 70-90 PTO horsepower for the D-239 variants, and potentially higher for DT-360 models. Exact figures vary by model year and configuration.
Fuel Type:
Diesel or Gasoline (depending on tractor configuration).
Injection System:
Typically rotary or inline injection pumps (e.g., Roosa Master, Bosch) for diesel engines.
Cooling Type:
Water-cooled with a radiator and fan.
Oil Type:
API CD or CE rated diesel engine oil, viscosity dependent on ambient temperature (e.g., SAE 10W-30, 15W-40).
Transmission Type:
Available with various transmissions including a 5-speed manual transmission, a 10-speed Gear Drive, and the innovative T-700 series Hydrostatic Transmission (HST).
Optional Features:
Choice between manual and hydrostatic transmissions often depended on specific models within the 826 series.
Hydrostatic Transmission:
The T-700 Hydrostatic transmission offered infinite speed control and simplified operation, a significant feature for its era.
Pto Engagement:
Typically a two-speed PTO (540/1000 RPM) with independent or live engagement depending on the configuration.
Wheelbase:
Approximately 92 inches (2337 mm).
Length:
Varies by configuration, typically around 140-150 inches (3556-3810 mm).
Operating Weight:
Approximately 6,500 - 8,000 lbs (2948 - 3629 kg), depending on configuration and presence of a loader.
Drawbar Horsepower:
Specific drawbar HP varies based on engine and transmission, but generally proportional to PTO HP.
Rollover Protection:
ROPS (Roll Over Protective Structure) became more common and often optional or standard depending on the year of manufacture and regional regulations. Manual covers installation and maintenance if equipped.
Braking System:
Internal expanding shoe brakes or disc brakes (depending on later updates/configurations), operated hydraulically with a parking brake mechanism.
Operator Station:
Designed with operator comfort and safety in mind for its era, though modern safety standards differ significantly.
Operator Interface:
Basic analog gauges for engine temperature, oil pressure, fuel level, and tachometer. Functional but not technologically advanced by modern standards.
Power Steering:
Often equipped with power steering, a significant technology for reducing operator fatigue.
Electrical System:
12-volt electrical system with generator or alternator depending on year. Manual provides detailed wiring diagrams for diagnostics.
Engine Oil Change:
Typically every 100-250 operating hours, depending on operating conditions and oil specification used. Manual provides detailed recommendations.
Transmission Fluid Change:
Recommended at specific intervals (e.g., annually or every 500 hours), with specific fluid types depending on transmission (hydrostatic vs. gear).
Hydraulic Fluid Change:
Typically every 1000 operating hours or annually. Manual specifies IH Hy-Tran fluid or equivalent.
Engine Oil Spec:
SAE 30 or 10W-30 API CD/CE rated diesel engine oil. Check manual for specific ambient temperature ranges.
Hydraulic Oil Spec:
International Harvester Hy-Tran (or equivalent modern tractor hydraulic fluid meeting the specifications).
Transmission Fluid Spec:
Varies by transmission type. Hydrostatic typically uses specialized hydraulic fluid, while manual transmissions might use gear oil. Manual provides exact specifications.
Coolant Type:
Ethylene glycol based antifreeze with corrosion inhibitors, mixed with distilled water (typically 50/50).
Common Wear Points:
Wear in the hydrostatic transmission (if equipped), clutch engagement issues in manual transmissions, hydraulic pump wear, and potential electrical system issues due to age.
Engine Common Problems:
Glow plug reliability (diesel), carburetor issues (gasoline), and potential injector pump problems. Overheating due to cooling system age.
Pto Wear:
Wear on PTO clutch packs and engagement mechanisms.
Manufacturer Legacy:
International Harvester was a prominent American manufacturer of agricultural and construction machinery, known for its robust and reliable equipment.
826 Series Development:
The 826 tractor was part of International Harvester's advanced tractor line of the late 1960s and early 1970s, succeeding models like the 706 and 806. It introduced key advancements, notably the hydrostatic transmission option.
Production Years:
Produced from approximately 1969 to 1971.
Manufacturing Location:
United States (e.g., Farmall Works, Rock Island, Illinois).
