Target User:
Farmers, agricultural professionals, mechanics, tractor collectors, and restoration enthusiasts.
Key Competitors:
John Deere, Massey Ferguson, Ford, Case IH (during its era).
Tractor Strengths:
Robust build, powerful engines, versatility for various farm tasks, reliable Torque Amplifier transmission option.
General Coverage:
Complete service, repair, and overhaul instructions for the International Harvester 756 Tractor.
Estimated Page Count:
Approximately 800-1000 pages (typical for comprehensive service manuals of this era).
Type:
Service Repair Workshop Manual
Format:
Likely a comprehensive printed manual or a digital PDF reproduction.
Engine:
Detailed diagnostics, overhaul procedures, fuel system, lubrication system, cooling system, ignition (if applicable, depending on engine variant).
Transmission:
Repair and adjustment of all transmission types (e.g., Torque Amplifier, Gear Drive), including shifting mechanisms and hydraulic controls.
Drivetrain:
Front wheel drive (if equipped), rear axle, differential, PTO (Power Take-Off) drive.
Hydraulics:
Hydraulic system operation, pump, valve body, cylinders, troubleshooting, fluid specifications, and maintenance of the hitch and auxiliary hydraulics.
Electrical System:
Wiring diagrams, starter, generator/alternator, battery, lighting, instrumentation, and troubleshooting of electrical components.
Steering:
Power steering system, components, repair, and adjustment.
Brakes:
Service and park brake system operation, repair, and adjustment.
Chassis And Body:
Frame, fenders, operator's platform, controls, and general bodywork repairs.
Maintenance:
Lubrication schedules, filter replacement, fluid checks and changes, component adjustments.
Troubleshooting:
Diagnostic charts and procedures for identifying and resolving common problems across all systems.
Repair:
Step-by-step instructions for disassembling, inspecting, repairing, and reassembling all major components and systems.
Overhaul:
Complete engine and transmission overhaul procedures, including specifications for critical clearances and wear limits.
Technical Specifications:
Torque values, clearances, fluid capacities, engine timings, and other critical data for proper assembly and adjustment.
Depth:
Comprehensive, designed for professional mechanics. Covers detailed diagnostics, component-level repair, and complete rebuilds.
Digital Format:
PDF (Searchable text, bookmarked sections recommended for ease of use).
Print Quality:
High-resolution scans with clear diagrams and text (if digital reproduction).
Binding Type:
Perfect bound or spiral bound (for printed manuals, to allow lying flat).
Paper Type:
Durable, coated paper stock resistant to shop grease and wear (for printed manuals).
Engine Options:
D-236 (Diesel, 4-cylinder), DT-236 (Diesel Turbocharged, 4-cylinder), MV-404 (Gasoline, V8).
D236 Horsepower:
Approx. 65-75 PTO horsepower (depending on configuration).
Dt236 Horsepower:
Approx. 75-85 PTO horsepower (depending on configuration).
Mv404 Horsepower:
Approx. 70-80 PTO horsepower (depending on configuration).
Diesel Injection:
Rotary or Inline injection pump (e.g., Roosa Master, CAV, Bosch depending on build date and engine variant).
Gasoline Carburetor:
Single or dual-barrel carburetor (e.g., Marvel-Schebler, Carter).
Coolant Capacity:
Approx. 10-12 quarts (varies slightly with engine).
Oil Capacity:
Approx. 9-12 quarts (varies with engine, including filter).
Gear Drive:
8-speed constant mesh gearbox (4 forward gears, 2 reverse gears, with high/low range selector).
Torque Amplifier:
Hydraulically assisted gear splitter, providing 16 forward and 8 reverse speeds.
Pto:
540/1000 RPM PTO, live PTO (mechanical or hydraulic engagement).
Transmission Fluid:
IH Hy-Trans fluid or equivalent (check manual for exact specification).
Wheelbase:
Approx. 86 inches (2184 mm).
Overall Length:
Approx. 135 inches (3429 mm).
Overall Width:
Approx. 70 inches (1778 mm) at rear track.
Operating Weight:
Approx. 7,500 - 9,000 lbs (3400 - 4082 kg) depending on configuration and attachments.
Rollover Protection:
ROPS (Roll-Over Protective Structure) often an option or field-installed, not always standard from factory in early years.
Braking System:
Mechanical drum brakes (rear), optional hydraulic disc brakes, parking brake.
Operator Station:
Open station with optional foot throttle and hand throttle, seatbelt often optional.
Instrumentation:
Basic dashboard with tachometer, engine hour meter, oil pressure gauge, temperature gauge, ammeter/voltmeter.
Power Steering:
Hydraulic power steering system significantly reduces steering effort.
Lighting:
Basic front headlights, optional rear work lights.
Engine Oil Change:
Every 100-150 hours or annually (refer to specific engine manual for exact intervals).
Transmission Fluid Change:
Every 500-600 hours or annually.
Engine Oil Grade:
API CD or MIL-L-2104B/C rated diesel engine oil, SAE 30 or 15W-30 (refer to manual for seasonal variations).
Hydraulic Fluid:
IH Hy-Trans or equivalent (check manual for exact specification, often shares with transmission).
Coolant:
Ethylene glycol based antifreeze with corrosion inhibitors, 50/50 mix with distilled water.
Torque Amplifier:
Potential for seal leaks, hydraulic pressure issues, and clutch pack wear if not properly maintained.
Diesel Injection Pump:
Wear in the injection pump can lead to poor starting, rough running, and reduced power.
Hydraulic Leaks:
Common in older tractors due to aging seals and hoses in the hydraulic system.
Electrical Connections:
Corrosion and wear on wiring and connectors can lead to intermittent electrical problems.
Manufacturer:
International Harvester (IH), a major American manufacturer of agricultural and construction equipment.
Series:
Part of the 'hydro' or '70' series tractors introduced in the mid-1960s, succeeding models like the 656 and preceding the 766.
Production Years:
Approximately 1967-1971.
Manufacturing Location:
United States (primarily Louisville, Kentucky).
