Tractor Segment:
The IH 806 was a versatile utility tractor, popular in medium-duty agricultural applications, competing with models from John Deere, Ford, and Massey Ferguson.
Key Competitors:
John Deere 3020/4020, Ford 5000/7000 series, Massey Ferguson 165/175.
Versatility:
Known for its robust construction and adaptability to various farm tasks with different implement setups.
Engine Options:
Offered with reliable IH diesel engines, providing good power and fuel efficiency for its class.
Target Audience:
Farm owners, mechanics, collectors, and anyone involved in the restoration or maintenance of the IH 806 tractor.
Engine:
Detailed diagnosis, overhaul, and component testing for IH D-354, D-361, and potentially D-414 diesel engines.
Transmission:
Service and repair of the hydrostatic transmission (if applicable), manual transmissions (e.g., 5-speed), and associated clutch mechanisms.
Hydraulics:
Complete hydraulic system repair, including pump, valves, cylinders, hoses, and hitch control mechanisms.
Electrical:
Wiring diagrams, starter, alternator, battery, lighting systems, and instrument panel troubleshooting.
Front Axle Steering:
Service and repair of front axle components, power steering system (if equipped), and steering linkages.
Rear Axle Drive:
Differential, final drive, and PTO (Power Take-Off) unit service and repair.
Brakes:
Hydraulic brake system diagnosis and repair, including master cylinder, wheel cylinders, and brake lines.
Cooling:
Radiator, fan, water pump, and thermostat service.
Fuel System:
Diesel injection pump (e.g., CAV, Roosa-Master), injectors, fuel filters, and fuel lines.
Power Take Off Pto:
Service and adjustment of the live PTO and ground speed PTO (if applicable).
Routine Maintenance:
Oil changes, filter replacements, lubrication points, greasing schedule, and general inspections.
Troubleshooting:
Diagnostic charts and flowcharts for common problems across all systems.
Major Overhaul:
Complete engine rebuild, transmission disassembly and reassembly, and hydraulic component overhauls.
Component Replacement:
Step-by-step instructions for replacing parts like water pumps, alternators, fuel injectors, clutch plates, etc.
Adjustments:
Valve adjustments, clutch adjustments, brake adjustments, PTO engagement adjustments.
Depth:
Comprehensive, from basic maintenance to full-scale engine and component rebuilds, suitable for professional mechanics and experienced owners.
Digital Format Details:
Searchable PDF, allowing quick access to information via keywords. High-resolution scans of original factory documentation.
Print Quality Description:
Clear, legible text and high-contrast diagrams. If printed, uses durable paper stock.
Binding Type Description:
If printed: Spiral-bound or perfect-bound for lay-flat usability in a workshop environment.
Paper Type Description:
If printed: Heavy-duty paper stock resistant to oil and grease common in workshop settings.
Engine Family:
International Harvester C-Line Diesel
Engine Displacement:
Typically 354 cu. in. (5.8 L) or 361 cu. in. (5.9 L) diesel. Some variants may have used the 414 cu. in. (6.8 L) diesel.
Horsepower Range:
Approximately 65-85 PTO horsepower, depending on engine variant and transmission.
Torque Specifications:
Refer to manual for specific torque values for engine components (e.g., cylinder head bolts, main bearings).
Injection Pump Types:
Likely equipped with CAV or Roosa-Master (Stanadyne) rotary injection pumps.
Cooling System Type:
Water-cooled with radiator, fan, and thermostat.
Transmission Type:
Manual transmission (e.g., 5-speed synchronized, potentially 10-speed with Hi-Lo option or torque amplifier).
Transmission Options:
Some models offered a Torque Amplifier (TA) unit for on-the-go gear changes or a hydrostatic transmission (less common for 806).
Gear Ratios:
Manual ratios detailed in the manual for optimal performance and PTO operation.
Fluid Type:
Typically requires 10W-30 or 134D type hydraulic/transmission fluid (check manual for exact specification).
Clutch Type:
Single or dual-stage dry clutch, depending on PTO configuration.
Wheelbase:
Approx. 92 inches (2337 mm) for 2WD standard tread models.
Operating Weight:
Approx. 7,000 - 8,500 lbs (3175 - 3856 kg), depending on configuration and ballast.
Drawbar Horsepower:
Rated based on engine output, significantly impacts drawbar performance.
Tractor Safety:
While specific modern ratings are not applicable, the manual will cover safe operating procedures, rollover protection (if factory-equipped or aftermarket), and PTO safety.
Braking System:
Hydraulic drum or disc brakes (depending on model year/spec) acting on rear wheels and potentially front if 4WD.
Operator Station:
Open station design with fenders and operator controls. Manual addresses safe mounting/dismounting and control operation.
Instrumentation:
Basic dashboard with tachometer, oil pressure gauge, water temperature gauge, ammeter, and fuel gauge.
Power Steering:
Often equipped with hydrostatic power steering for ease of operation, covered in the manual.
Electrical System:
12-volt electrical system with standard battery, starter, and alternator.
Engine Oil Change:
Typically every 100-200 operating hours or annually, depending on operating conditions.
Transmission Hydraulic Oil Change:
Recommended every 1000 operating hours or 2 years. The manual will specify the exact interval and fluid capacity.
Engine Oil Type:
API CD or MIL-L-2104B rated diesel engine oil, typically SAE 10W-30 or 15W-40.
Hydraulic Fluid Type:
IH Hy-Tran fluid or equivalent (e.g., John Deere J20C, Case TCH fluid). Check manual for precise specification.
Coolant Type:
Permanent type antifreeze (ethylene glycol) mixed with water. Manual will specify ratio and capacity.
Grease Type:
Lithium-based multi-purpose grease (e.g., NLGI #2).
Common Wear Points:
Wear in the PTO clutch, hydraulic pump and control valve, front axle pivot, and injection pump timing are common areas addressed in the manual.
Troubleshooting Focus:
Manual provides guidance on diagnosing starting issues, hydraulic lift problems, transmission slippage, and engine power loss.
Manufacturer:
International Harvester (IH), a major American manufacturer of agricultural and industrial machinery, later becoming Case IH.
Series Context:
The 806 was part of the '06' series, succeeding models like the 706 and representing a significant advancement in IH tractor technology for its era.
Production Years:
Produced primarily from 1963 to 1967.
Manufacturing Locations:
Likely manufactured at IH plants in the United States, such as Rock Island, Illinois.
