Engine:
Complete overhaul, diagnostics, repair, maintenance, troubleshooting
Transmission:
Repair, maintenance, troubleshooting, overhaul procedures
Electrical System:
Wiring diagrams, component testing, troubleshooting, diagnostics
Hydraulic System:
Component repair, troubleshooting, maintenance, service specifications
Power Take Off Pto:
Service, repair, and maintenance procedures
Frontend And Rear Axles:
Rebuild, maintenance, troubleshooting
Braking System:
Repair, maintenance, adjustments, diagnostics
Steering System:
Service, repair, and troubleshooting for steering components
Cooling System:
Maintenance, repair, and troubleshooting of radiators, thermostats, and related components
Fuel System:
Component testing, repair, and maintenance of fuel injectors, pumps, and filters
Operator Station And Cab:
Component repair, adjustment, and maintenance
Chassis And Frame:
Inspection, repair, and maintenance of the tractor frame and related structural components.
Attachments And Hitches:
Information on the operation, maintenance, and troubleshooting of the three-point hitch and drawbar systems.
Instrument Panel:
Diagnosis and repair of dashboard instruments, warning lights, and gauges.
Steering Column And Linkage:
Repair and adjustment procedures for the steering column, tie rods, and other steering linkage components.
Maintenance:
Periodic maintenance charts, lubrication schedules, fluid checks
Repair:
Step-by-step repair instructions for all major components
Troubleshooting:
Diagnostic procedures and solutions for common and uncommon issues
Overhaul:
Detailed overhaul procedures for engine, transmission, and other major assemblies
Diagnostics:
System-specific diagnostic trees and testing methods
Wiring Diagrams:
Comprehensive electrical schematics and wiring routing information
Component Identification:
Identification of all major components and their functions.
Recalibration And Adjustment:
Procedures for calibrating and adjusting various systems, including PTO, hydraulic controls, and braking.
Depth:
Full workshop level, suitable for professional technicians and advanced DIY users
Specifications:
Includes torque specifications, clearances, fluid capacities, and other critical technical data for repairs and adjustments.
Engine Type:
Diesel (likely a D-series engine, e.g., D-239 or D-268, specific to 786)
Horsepower Range:
Approximately 70-80 PTO horsepower (typical for this class)
Torque Specifications:
Manual will contain specific torque values for all engine fasteners, critical for proper assembly.
Overhaul Procedures:
Detailed step-by-step instructions for complete engine rebuild, including piston, ring, bearing, valve, and cylinder head service.
Cylinder Head Service:
Detailed procedures for valve lapping, seating, and cylinder head gasket replacement.
Transmission Type:
T-154 synchronized transmission (common for 786)
Transmission Options:
Possible options like Power-Shift transmission (check specific production details)
Gear Selection:
Multiple forward and reverse gears (e.g., 8 forward, 2 reverse)
Clutch Service:
Instructions for clutch inspection, adjustment, and replacement of clutch components.
Gear Ratio Information:
Details on gear ratios for each gear selection, aiding in performance analysis and troubleshooting.
Engine Oil Change:
Typically every 100-250 operating hours or annually, refer to manual for exact intervals.
Transmission Oil Change:
Consult manual for specific intervals, often around 1000-2000 hours.
Air Filter Replacement:
Service intervals based on operating conditions, typically requiring periodic cleaning or replacement of the air filter element.
Engine Oil Type:
API CD or CE rated diesel engine oil, SAE 30 or 15W-40 (refer to manual for exact viscosity and API rating based on temperature).
Hydraulic Fluid Type:
IH Hytran or equivalent universal tractor transmission fluid (UTTF) - specific part numbers would be in the manual.
Transmission Fluid Capacity:
Refer to manual for exact capacity, typically around 12-15 gallons for the transmission and hydraulic reservoir combined.
Common Wear Points:
Transmission synchronizers, clutch wear, hydraulic pump efficiency, front axle kingpins.
Electrical Gremlins:
Corrosion on electrical connectors, failing starter solenoids, and alternator issues can be common in older equipment.
Engine Specific Concerns:
Potential for injector pump calibration drift or wear over time, requiring specialized service.
Manufacturer Legacy:
International Harvester (IH) was a major manufacturer of agricultural and construction equipment, known for its robust and reliable machinery.
Product Line Significance:
The 786 represented a strong offering in the utility tractor segment for its era, known for its versatility in farm operations.
Series Context:
The 786 was part of IH's 86 series of tractors, which succeeded the 06 and 56 series, offering improved comfort and performance.
Design Philosophy:
The 86 series aimed to provide more operator comfort and improved drivetrain efficiency compared to previous models.
Production Years:
Approximately 1976-1981 (specific dates may vary)
