Target User:
Owners, operators, and service technicians requiring in-depth knowledge for maintenance and repair of the IH 2706 Tractor.
Value Proposition:
Provides essential technical data and procedures to maintain and repair a classic piece of agricultural machinery, reducing reliance on potentially scarce expert services.
Comprehensiveness:
Covers all major systems, offering a complete guide for restoration and ongoing maintenance.
Format Convenience:
Digital PDF format allows for easy storage, searchability, and printing of relevant sections.
Engine:
Detailed overhaul, diagnostics, and component repair for the diesel engine(s) fitted to the 2706.
Transmission:
Repair, adjustment, and troubleshooting of the transmission system, including clutch, gearbox, and final drives.
Hydraulics:
Service procedures for the hydraulic system, including pumps, valves, cylinders, and PTO operation.
Electrical:
Wiring diagrams, troubleshooting for starting and charging systems, lighting, and accessories.
Steering:
Service and repair of the steering mechanism, including power steering components.
Braking:
Maintenance, adjustment, and repair of the braking system (likely drum or disc brakes).
Cooling System:
Radiator, thermostat, water pump, and fan system service.
Fuel System:
Diesel fuel injection system service, including pumps, injectors, and filters.
Chassis And Frame:
Front axle, rear axle, and frame component service and repair.
Operator Station:
Seat, controls, instrumentation, and dashboard service.
Power Take Off:
Service, repair, and adjustment of the PTO clutch and engagement mechanism.
Maintenance:
Routine maintenance tasks, lubrication schedules, fluid checks, filter replacement.
Troubleshooting:
Diagnostic charts and step-by-step troubleshooting guides for common and uncommon issues.
Repair:
Detailed disassembly, inspection, repair, and reassembly procedures for all major components.
Overhaul:
Complete engine, transmission, and hydraulic system overhaul instructions.
Adjustment:
Precise adjustment procedures for clutch, brakes, PTO engagement, and hydraulic controls.
Calibration:
Calibration of fuel injection timing and potentially other system calibrations.
Part Numbers:
Likely includes crucial part numbers for replacement components, though a separate parts catalog is often more detailed.
Diagnostics:
Systematic diagnostic trees for identifying root causes of mechanical and electrical issues.
Depth:
Comprehensive, suitable for professional mechanics and experienced DIY users. Covers detailed internal component repair, torque specifications, and diagnostic procedures.
Specifications Charts:
Extensive use of charts for torque values, clearances, specifications, and diagnostic information.
Make:
International Harvester
Model:
Typically the IH D-236 or D-263 inline diesel engine.
Configuration:
6-cylinder, inline, naturally aspirated diesel.
Displacement:
D-236: 236 cubic inches (3.87 liters); D-263: 263 cubic inches (4.31 liters)
Bore X Stroke:
D-236: 3.875" x 4.39" (98.4 mm x 111.4 mm); D-263: 4.00" x 4.39" (101.6 mm x 111.4 mm)
Compression Ratio:
Typically around 16.5:1 or 17:1
Governor:
Mechanical governor, type and adjustment covered in the manual.
Horsepower Gross:
Approximately 70-80 PTO HP (varies slightly by specific engine variant and tune).
Torque:
Specifications available in the manual, essential for engine rebuilding.
Injection Type:
Direct injection with rotary or inline fuel injection pump (e.g., CAV or Roosa Master).
Fuel Filters:
Primary and secondary fuel filter part numbers and replacement procedures detailed.
Type:
Non-synchronized 8-speed or 10-speed (e.g., Power Steering with 2 forward ranges, 4 speeds each) manual transmission with optional two-speed Power Take-Off (PTO) and a Torque Amplifier (TA) option for on-the-go shifting of 4 gears.
Torque Amplifier:
A significant feature offering 16 forward and 4 reverse speeds when engaged.
Shift Pattern:
Detailed shift pattern diagrams and operation instructions provided.
Fluid Type:
Specific transmission oil type and capacity (e.g., Hy-Trans or equivalent).
Wheelbase:
Approx. 88 inches (2235 mm) for standard tread versions.
Length:
Approx. 130 inches (3302 mm) without implement.
Width:
Varies by rear tire size and tread setting, typically around 72-80 inches (1829-2032 mm).
Operating Weight:
Approximately 5,500 - 6,500 lbs (2495 - 2948 kg), depending on configuration.
Front Axle Weight:
Manual will provide specifications for front axle loading and tire pressures.
Rear Axle Weight:
Manual will provide specifications for rear axle loading and tire pressures.
Instrumentation:
Basic dashboard with tachometer, oil pressure gauge, coolant temperature gauge, ammeter, and hour meter. Manual details their function and troubleshooting.
Power Steering:
Power steering system greatly improves maneuverability. Manual details its service.
Pto Engagement:
Independent PTO with manual or power engagement, offering versatility for various implements.
Three Point Hitch:
Category 2 three-point hitch with draft and position control for implement attachment. Manual covers hydraulic control adjustments.
Hydraulic System:
Open-center hydraulic system with external hydraulic ports for operating implements. Manual details pump capacity and valve operation.
Engine Oil Change:
Typically every 100-250 operating hours, manual will specify exact interval and oil type.
Fuel Filter Replacement:
Recommended at regular intervals, usually tied to operating hours or annually.
Transmission Fluid Change:
As specified by IH, typically annually or based on operating hours. Critical for TA longevity.
Engine Oil:
API CD or equivalent diesel engine oil, viscosity grade specified in manual (e.g., 15W-40 or 10W-30).
Transmission Hydraulic Fluid:
IH Hy-Trans (or equivalent) is commonly recommended for the transmission, hydraulics, and PTO.
Coolant:
Ethylene glycol based coolant, typically a 50/50 mix with distilled water. Manual will specify capacity and type.
Differential And Final Drive Fluid:
Specified lubricant type and capacity, often shared with transmission/hydraulic fluid.
Torque Amplifier:
TA clutch wear or failure is a common issue in high-hour units; manual provides repair procedures.
Fuel Injection Pump:
Wear or adjustment issues on the rotary or inline injection pump can affect performance.
Hydraulic Leaks:
Aging seals and hoses can lead to hydraulic fluid leaks, affecting lift capacity and power steering.
Electrical Connections:
Corrosion and wear on electrical connections can cause starting, charging, or lighting problems.
Manufacturer:
International Harvester (IH), a major American manufacturer of agricultural and construction machinery.
Series:
Part of the 2600 series, succeeding earlier models and preceding later designs as IH transitioned through its product lines.
Production Years:
Generally produced from the mid-1960s into the early 1970s.
Manufacturing Plant:
Likely manufactured at one of IH's major tractor plants in the USA (e.g., Louisville, Kentucky).
