Market Segment:
Agricultural Tractors, Light Industrial Tractors
Target Audience:
Farmers, agricultural mechanics, restoration enthusiasts, tractor collectors.
Key Competitors:
Massey Ferguson, John Deere, Fordson, Ferguson TE20 series, David Brown.
Durability:
Known for robust construction and reliable performance in demanding agricultural environments.
Versatility:
Adaptable for a wide range of farm tasks, from plowing and cultivating to mowing and transport.
Systems Covered:
Engine, Fuel System, Cooling System, Lubrication System, Electrical System, Clutch, Transmission, Rear Axle, Power Take-Off (PTO), Steering System, Brakes, Hydraulics, Front Axle, Sheet Metal, Body, Schematics, Troubleshooting
Manual Type:
Factory Service Repair Manual
Engine Disassembly And Assembly:
Comprehensive procedures for engine teardown, inspection, repair, and reassembly, including piston, ring, connecting rod, crankshaft, camshaft, cylinder head, and valve train servicing.
Fuel System Servicing:
Detailed information on fuel pump, carburetor/injection pump (if applicable), fuel filter replacement, and fuel line troubleshooting.
Cooling System Maintenance:
Radiator service, water pump repair, thermostat replacement, and coolant specifications.
Lubrication System Overhaul:
Oil pump inspection, oil filter replacement, and oil specification details.
Electrical System Diagnostics:
Wiring diagrams, starter motor, alternator, battery service, ignition system troubleshooting, and lighting system repair.
Clutch And Transmission Repair:
Clutch assembly service, gearbox disassembly and reassembly, gear synchronization, and transmission fluid specifications.
Rear Axle And Differential:
Axle housing inspection, differential overhaul, and axle shaft service.
Pto Operation And Repair:
Power Take-Off engagement, disengagement, and repair procedures.
Steering System Adjustment And Repair:
Steering linkage, steering gearbox, and related component service.
Brake System Overhaul:
Brake pedal, master cylinder, wheel cylinders, and brake shoe/pad replacement.
Hydraulic System Troubleshooting:
Hydraulic pump, control valve, cylinder, and hydraulic fluid specifications.
Front Axle And Steering Geometry:
Front axle assembly, kingpins, tie rods, and wheel alignment.
Sheet Metal And Bodywork:
Fender, hood, grille, and mounting hardware procedures.
Routine Maintenance:
Oil changes, filter replacements, lubrication, fluid checks, and general inspection procedures.
Troubleshooting Guides:
Diagnostic charts and step-by-step procedures for identifying and resolving common mechanical and electrical issues.
Major Component Rebuilds:
Detailed instructions for complete overhauls of engines, transmissions, and hydraulic systems.
Part Replacement:
Specific guidance for replacing various components across all systems.
Adjustments And Calibration:
Procedures for adjusting clutch, brakes, steering, and hydraulic controls.
Electrical Schematics Interpretation:
Clear and detailed wiring diagrams for tracing electrical circuits and diagnosing faults.
Technical Depth:
Comprehensive, ranging from basic maintenance to complete engine and transmission rebuilds. Includes detailed torque specifications, tolerances, and diagnostic procedures.
Engine Manufacturer:
International Harvester
Engine Model:
BD-144 / BD-154 (variants exist)
Engine Type:
4-cylinder, Indirect Injection, Diesel
Bore:
3.50 inches (88.9 mm)
Stroke:
3.75 inches (95.25 mm)
Displacement:
144 cubic inches (2.36 liters) / 154 cubic inches (2.52 liters)
Compression Ratio:
Approx. 20:1
Horsepower Rating Drawbar:
Approx. 30-35 HP (Drawbar)
Horsepower Rating Pto:
Approx. 35-40 HP (PTO)
Torque Output:
Significant torque for its class, optimized for pulling power.
Injection System:
Rotary or In-line injection pump (e.g., CAV, Simms, or Bosch depending on region/spec).
Fuel Filter Type:
Spin-on diesel filter, often with a water separator.
Transmission Type:
Manual, constant mesh gearbox
Number Of Speeds Forward:
8-speed (typically)
Number Of Speeds Reverse:
2-speed (typically)
Clutch Type:
Single dry plate, diaphragm spring (typical)
Optional Features:
Some models may have had partial-power shift or creeper gear options in certain markets, but the standard was a direct-shift gearbox.
Gear Selection:
Central shifter for main gears, possibly a range selector.
Transmission Fluid Type:
API GL-4 or equivalent multi-purpose tractor oil (e.g., SAE 90, or UTTO if specified for hydraulic functions).
Engine Oil Change:
Every 100-150 operating hours or annually, whichever comes first.
Oil Filter Replacement:
Replace with every oil change.
Fuel Filter Replacement:
Every 250-300 operating hours or as needed if fuel system issues arise.
Air Filter Cleaning Or Replacement:
Clean every 50 operating hours, replace as needed based on condition.
Transmission Fluid Change:
Every 500-750 operating hours or every 2-3 years.
Engine Oil Type:
API CD or CE rated diesel engine oil, SAE 30 or 15W-40 depending on ambient temperature.
Engine Oil Capacity:
Approx. 7 U.S. quarts (6.6 liters)
Cooling System Capacity:
Approx. 9-10 U.S. quarts (8.5-9.5 liters)
Cooling System Coolant:
Ethylene glycol-based antifreeze mixed with water (50/50 ratio) for freeze protection and corrosion inhibition.
Transmission Hydraulic Fluid:
Universal Tractor Transmission Oil (UTTO) or API GL-4 Gear Oil (SAE 90).
Transmission Hydraulic Capacity:
Approx. 10-12 U.S. gallons (38-45 liters) for combined transmission, hydraulic reservoir, and PTO.
Common Wear Items:
Clutch wear, brake shoe wear, PTO seal leaks, steering box wear, hydraulic pump output degradation over time.
Engine Starting:
Glow plug system issues or injector problems can affect cold starts.
Hydraulic Performance:
Loss of hydraulic lift or erratic operation can be due to worn pump, leaking seals, or low fluid levels.
Manufacturer History:
International Harvester (IH) was a prominent American manufacturer of agricultural and construction equipment, trucks, and automobiles from 1902 to 1985.
B Series Context:
The B275 was part of IH's highly successful range of lightweight, versatile tractors produced in the post-WWII era, succeeding models like the A and B-450.
Predecessors Successors:
Followed the B-250 and B-276, and was a precursor to the 400 series and later IH tractors.
Production Years:
Primarily produced from 1958 to 1964 (approximate range, variations may exist).
Manufacturing Location:
Manufactured at various International Harvester plants, notably in the United Kingdom (Doncaster Works) and sometimes other international locations for local markets.
