Market Segment:
Heavy-duty agricultural and industrial tractors, designed for demanding work in farming, construction, and grounds maintenance.
Competitors:
Competed with tractors from manufacturers like John Deere, Ford, Massey Ferguson, and Allis-Chalmers during its production era.
Key Features:
Robust construction, reliable IH diesel engines, versatile transmission options, strong hydraulic systems, and a reputation for durability in tough conditions.
Value For Owners:
Essential resource for maintaining, repairing, and troubleshooting IH Case 85 Series tractors, ensuring optimal performance, longevity, and maximizing the return on investment for owners and operators.
Service Manual Coverage:
Comprehensive repair, maintenance, troubleshooting, and diagnostics for the IH Case 85 Series Tractors.
Operator Manual Coverage:
Operating instructions, safety precautions, basic maintenance, controls, and features of the IH Case 85 Series Tractors.
Service Manual Page Count:
Estimated 500-1000+ pages (typical for a comprehensive factory service manual of this era and tractor series)
Operator Manual Page Count:
Estimated 100-250+ pages (typical for a factory operator's manual)
Service Manual Type:
Factory Service Repair Manual
Operator Manual Type:
Factory Operators Instruction Manual
Engine:
Detailed specifications, disassembly, assembly, troubleshooting, and overhaul procedures for IH Diesel engines (e.g., D-179, D-239, DT-239).
Fuel System:
Injection pump, injectors, fuel lines, filters, bleeding procedures, timing specifications.
Cooling System:
Radiator, fan, water pump, thermostat, coolant specifications, flushing procedures.
Electrical System:
Charging system (alternator/generator), starting system (starter motor), battery maintenance, lighting, wiring diagrams, component testing.
Transmission:
Gearbox overhaul, clutch service, PTO engagement, differential, final drives, hydraulic transmission components (if applicable).
Hydraulic System:
Hydraulic pump, control valves, cylinders, remote hydraulics, hitch control, hydraulic fluid specifications and testing.
Power Take Off Pto:
PTO shaft, clutch, engagement mechanisms, speeds, and maintenance.
Steering System:
Power steering pump, cylinder, steering linkage, hydraulic fluid, troubleshooting.
Brake System:
Brake pedal, master cylinder, wheel cylinders/calipers, brake fluid, bleeding, parking brake.
Chassis And Frame:
Frame inspection, front axle, rear axle, wheel hubs, mounting procedures.
Body And Fenders:
Hood removal/installation, fender mounting, operator station components.
Preventative Maintenance:
Oil changes, filter replacements, greasing points, fluid level checks, inspection routines.
Troubleshooting:
Systematic diagnostic guides for common and uncommon problems across all major systems.
Component Overhaul:
Detailed step-by-step instructions for complete disassembly, inspection, repair, and reassembly of major components.
Adjustment Procedures:
Engine timing, valve clearances, clutch free play, brake adjustments, hydraulic control settings.
Calibration:
Fuel injection pump timing calibration, hydraulic control valve calibration.
Electrical Troubleshooting:
Schematic interpretation, circuit testing, component diagnosis using multimeter and specialized tools.
Hydraulic Troubleshooting:
Pressure testing, flow testing, leak detection, component testing (pump, valves, cylinders).
Depth:
Factory-level, comprehensive detail suitable for professional mechanics and experienced owner-operators. Covers everything from basic adjustments to complete engine rebuilds and transmission overhauls.
Diagnostic Capability:
Extensive diagnostic flowcharts, symptom-cause-correction tables, and specifications for precise troubleshooting.
Special Tools:
Identification and usage of specialized tools required for specific repair procedures.
Engine Family:
International Harvester 'D' Series Diesel Engines
Common Engines:
D-179 (4-cylinder), D-239 (4-cylinder), DT-239 (Turbocharged 4-cylinder)
Displacement D179:
179 cubic inches (2.9 L)
Displacement D239:
239 cubic inches (3.9 L)
Horsepower Range:
Typically 50-90 HP, depending on specific model and engine variant (e.g., 785, 885, 985).
Torque Characteristics:
Designed for strong low-end torque suitable for pulling heavy loads.
Injection System:
Inline injection pumps (e.g., Bosch or CAV) and direct injection combustion chambers.
Oil Type:
API CD or CE rated diesel engine oil, SAE 15W-40 or 10W-30 depending on temperature (refer to specific manual for exact specifications).
Oil Capacity:
Approximately 8-10 quarts (7.5-9.5 liters), including filter, for most D-239 engines (verify with manual).
Coolant Type:
Ethylene glycol-based antifreeze mixed with distilled water (typically 50/50 ratio). Check manual for specific additive requirements (e.g., SCA).
Transmission Type:
Synchronized Manual Transmission (SMT) with multiple gears (e.g., 8 forward, 4 reverse or 12 forward, 4 reverse with creeper).
Optional Transmission:
Some models may have offered partial powershift or creeper gear options.
Gear Selection:
Range selector (e.g., High/Low) and gear shift levers for selecting specific ratios.
Transmission Oil Type:
API GL-4 or GL-5 gear oil, SAE 80W-90 or 85W-140 (verify viscosity based on operating temperature and specific manual recommendation).
Transmission Oil Capacity:
Varies by model, typically 15-25 quarts (14-24 liters) for main gearbox and rear axle. Check manual.
Clutch Type:
Single dry-plate or dual-clutch (depending on PTO configuration) with mechanical or hydraulic actuation.
Engine Oil Change:
Typically every 250 hours of operation or annually, whichever comes first (verify with manual).
Air Filter Service:
Inspect every 100-150 hours, clean or replace as needed. More frequent replacement in dusty conditions (verify with manual).
Fuel Filter Replacement:
Typically replaced annually or every 500 hours, or when experiencing fuel delivery issues (verify with manual).
Transmission Oil Change:
Generally every 1000-1200 hours or every 2-3 years (verify with manual).
Hydraulic Oil Change:
Typically every 500-1000 hours or every 2 years (verify with manual).
Hydraulic Fluid:
IH Hy-Tran (or equivalent), ISO VG 46 universal tractor transmission oil (UTTO) or IH approved fluid. Consult manual for specific type and viscosity.
Common Wear Points:
Clutch wear, PTO engagement issues, hydraulic pump or valve leaks, starter motor reliability, injection pump timing drift.
Engine Reliability:
IH diesel engines are generally robust, but specific issues can include injector problems, valve seat wear, or head gasket leaks under extreme use.
Transmission Problems:
Gear grinding (synchronizer wear), clutch slippage, PTO drive shaft wear.
