Engines Covered:
BD144, BD154 Diesel
Transmission Types Covered:
5-speed constant mesh gearbox
Major Systems Covered:
Engine, Fuel System, Cooling System, Lubrication System, Electrical System, Clutch, Transmission, Drive Axles, Rear Axle, Steering, Brakes, Hydraulics, Power Take-Off (PTO), Front Axle, Implement Hitch
Specific Parts Covered:
All major mechanical, hydraulic, and electrical components of the B275 tractor.
Estimated Page Count:
Varies (typically 300-500 pages for comprehensive service manuals)
Manual Type:
Service Repair Manual
Manual Purpose:
To provide comprehensive guidance for diagnosing, repairing, and maintaining the International Harvester B275 tractor.
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures for BD144 and BD154 diesel engines, including cylinder head, pistons, crankshaft, connecting rods, camshaft, valves, and timing.
Fuel System Repair:
Detailed instructions for fuel injection pump (e.g., CAV Simms), injectors, fuel lines, filters, and troubleshooting common fuel-related issues.
Cooling System Maintenance:
Radiator, water pump, thermostat, fan, and coolant management procedures.
Lubrication System Service:
Oil pump, oil filter, oil passages, and lubrication schedules.
Electrical System Diagnostics:
Starting system (starter motor), charging system (generator/alternator), battery, ignition system (if applicable), lighting, wiring diagrams, and component testing.
Clutch And Transmission Repair:
Clutch assembly, pressure plate, clutch disc, release bearing, gearbox disassembly, gear replacement, bearing service, and lubrication.
Drive Axle And Rear Axle Service:
Differential, drive shafts, axle housings, bearings, seals, and lubrication.
Steering System Overhaul:
Steering box, tie rods, drag links, steering column, and adjustment procedures.
Braking System Maintenance:
Brake master cylinder, wheel cylinders, brake shoes, brake drums, brake lines, adjustment, and bleeding procedures.
Hydraulic System Operation And Repair:
Hydraulic pump (e.g., PTO pump or CAV hydraulic pump), control valves, cylinders, lift arms, draft control, position control, and hydraulic fluid specifications.
Pto System Service:
PTO shaft, gears, clutch, and related components.
Front Axle And Steering Geometry:
Service and alignment procedures for the front axle and steering components.
Implement Hitch Operation:
Information on the three-point hitch system, draft control, and position control adjustments.
General Maintenance:
Daily, weekly, monthly, and annual maintenance checks, lubrication points, and fluid level checks.
Troubleshooting Guides:
Systematic diagnostic procedures for common problems, with symptoms, causes, and corrective actions.
Repair And Rebuild:
Step-by-step instructions for component disassembly, cleaning, inspection, measurement of wear, parts replacement, and reassembly with torque specifications.
Adjustment Procedures:
Precise instructions for adjusting clutch, brakes, steering, PTO engagement, hydraulic controls, and engine components.
Electrical Troubleshooting With Wiring Diagrams:
Detailed wiring diagrams for all electrical systems, allowing for systematic diagnosis of electrical faults.
Hydraulic System Diagnostics And Repair:
Testing of hydraulic pump pressure and flow, cylinder seal replacement, valve adjustments, and troubleshooting hydraulic lift issues.
Engine Timing Procedures:
Detailed steps for setting engine timing, including injection pump timing.
Valve Adjustment:
Instructions for setting engine valve lash (clearance).
Technical Depth:
Comprehensive (suitable for professional mechanics and experienced DIY users). Covers from routine maintenance to complete engine and transmission overhauls, including detailed component specifications and tolerances.
Torque Specifications:
Includes detailed torque specifications for critical fasteners across all systems.
Precision Measurements:
Provides critical dimensions, clearances, and wear limits for engine, transmission, and other mechanical components.
Engine Oil Change Interval:
Typically every 100-150 operating hours or annually, depending on operating conditions.
Air Filter Cleaning Interval:
Check and clean frequently, replace as needed based on dust levels.
Fuel Filter Replacement Interval:
Replace at specified intervals (e.g., annually or every 250 hours), and when servicing the fuel system.
Transmission Oil Change Interval:
Typically annually or every 500 operating hours.
Engine Oil Type:
API CD or CE rated diesel engine oil, SAE 30 or 15W-40 (refer to specific manual for exact grade and API rating recommended at the time of manufacture).
Engine Oil Capacity:
Approx. 6.5 - 7 quarts (6.2 - 6.6 liters) (BD144/BD154)
Transmission Hydraulic Fluid Type:
IH Hy-Trans (or equivalent UTF - Universal Tractor Transmission Fluid) for the transmission and hydraulic system.
Transmission Hydraulic Fluid Capacity:
Approx. 9-10 gallons (34-38 liters)
Coolant Type:
Ethylene glycol based antifreeze/coolant mixture with water (50/50 ratio recommended for protection).
Common Wear Items:
Clutch wear, brake shoe wear, hydraulic pump seals, engine seals (especially crankshaft seals), starter motor and generator components.
Potential Diesel System Issues:
Clogged fuel filters, worn injection pump, injector issues, air in the fuel system.
Hydraulic System Performance Degradation:
Reduced lift capacity, slow hydraulics, or loss of position control can indicate worn pump, seals, or control valve issues.
Electrical System Reliability:
Older wiring can degrade, leading to intermittent issues. Generator or alternator output may need checking.
