Market Position:
The International Harvester Cadet 85 was a compact utility tractor positioned for small farm operations, hobby farms, estate management, and groundskeeping. It offered a balance of power, maneuverability, and versatility.
Competitive Analysis:
Competed with similar-sized tractors from manufacturers like John Deere (e.g., 100 series), Ford (e.g., 1000 series), Massey Ferguson, and Cub Cadet (though Cub Cadet was an IH division).
Key Features:
Robust build quality typical of IH, reliable engine, versatile PTO and hydraulic system, comfortable operator station for its class, ability to accept various attachments (mowers, tillers, loaders).
Systems Covered:
Engine mechanical and troubleshooting, fuel system, ignition system, cooling system, lubrication system, electrical system (starting, charging, lighting, ignition), clutch, transmission (gearbox, PTO), drivetrain (rear axle, differential, brakes), steering system, hydraulic system (lift, attachments), chassis and body, troubleshooting charts, specifications.
Procedures Included:
All maintenance procedures, diagnostic testing, repair procedures, disassembly and reassembly instructions, adjustments, torque specifications, special tool requirements, wiring diagrams, troubleshooting guides.
Technical Depth:
In-depth, covering everything from routine maintenance and adjustments to complete engine overhauls and transmission rebuilds. Designed for professional technicians and serious DIY mechanics.
Troubleshooting Charts:
Inclusion of detailed troubleshooting flowcharts and symptom-based diagnostic procedures for all major systems.
Part Number References:
Likely includes part numbers for critical components, enabling accurate replacement part sourcing.
Torque Specifications:
Comprehensive torque values for all critical fasteners (engine, transmission, axle, hydraulic components, etc.).
Electrical Schematics:
Detailed wiring diagrams for all electrical circuits, including lighting, ignition, charging system, and any auxiliary circuits.
Hydraulic Schematics:
Schematics and explanations of the hydraulic system, including pump, control valve, cylinders, and related components for the hitch and external remotes.
Engine Overhaul Procedures:
Step-by-step instructions for complete engine disassembly, inspection, component replacement, and reassembly, including machining tolerances.
Transmission Rebuild Procedures:
Detailed instructions for the repair and overhaul of the main transmission gearbox and differential assembly.
Body Repair Procedures:
Procedures for body panel alignment, repair, and maintenance of the chassis and running gear.
Special Tool Identification:
Identification and usage instructions for any specialized tools required for specific repair or diagnostic tasks.
Engine Model:
Likely an IH-designed gasoline or diesel engine. Specific model number (e.g., C-113, C-123 for gasoline, or a D-series diesel) would depend on the exact configuration and year, but commonly in the 1.2L to 1.6L range.
Horsepower Range:
Approximately 20-30 PTO horsepower, depending on the specific engine variant.
Torque Curve:
Designed for strong low-end torque suitable for agricultural applications.
Fuel Type:
Gasoline or Diesel (depending on variant)
Carburetor Or Injection:
Gasoline models typically feature a single-barrel carburetor (e.g., Marvel-Schebler). Diesel models would use a distributor-type injection pump.
Cooling Type:
Liquid-cooled (radiator, water pump, thermostat)
Oil Type Specification:
API Service classification SC, SD, or SE. Viscosity grade typically SAE 30 or 10W-30 depending on temperature. (Consult manual for exact IH specification).
Engine Serial Number Location:
Typically stamped on the engine block or a specific data plate.
Transmission Type:
Manual Synchromesh (or non-synchro) transmission with multiple forward and reverse gears.
Optional Transmission:
Likely a 2-speed PTO (Power Take-Off) as standard or optional, and potentially a creeper gear option for very low speeds.
Gear Ratios:
Specific gear ratios will be detailed in the WSM, crucial for understanding torque multiplication at different speeds.
Transmission Fluid Specification:
Typically IH Hytran or equivalent tractor hydraulic fluid (THF). Capacity and change intervals will be in the manual. (e.g., API GL-4 80W-90 for some gearboxes if separate).
Wheelbase:
Varies by specific configuration, but typically around 65-75 inches.
Overall Length:
Approximate: 100-120 inches.
Overall Width:
Approximate: 55-65 inches (tread adjustable).
Operating Weight:
Approximate: 2,000 - 2,500 lbs, depending on configuration and ballast.
Drawbar Horsepower:
Typically around 80-90% of PTO horsepower.
Rollover Protection:
ROPS (Rollover Protective Structure) may have been an option or dealer-installed accessory, not typically standard on older models unless mandated.
Braking System:
Mechanical drum brakes or hydraulic disc brakes (depending on specific model/year), acting on rear wheels. Parking brake mechanism.
Seatbelt Availability:
Seatbelts may have been optional or an aftermarket addition, especially on earlier models.
Infotainment System:
Basic operator controls. No infotainment systems as understood in modern vehicles.
Driver Assistance Features:
N/A (Operator utilizes manual controls for steering, throttle, and implement operation).
Connectivity Options:
N/A
Instrument Panel:
Basic gauges: Ammeter, oil pressure (often a dummy light or gauge), temperature gauge, tachometer (sometimes optional or absent), fuel gauge.
Engine Oil Change Interval:
Typically every 50-100 operating hours or annually. (Precise interval depends on engine and usage, detailed in manual).
Transmission Hydraulic Fluid Change Interval:
Typically every 200-400 operating hours or annually. (Crucial for cooling and lubrication).
Air Filter Replacement Interval:
Depends on operating conditions; check visually every 50 hours, replace as needed or annually.
Engine Oil Capacity:
Approximately 4-5 quarts (e.g., 3.8 - 4.7 Liters) with filter change. (Exact capacity in manual).
Hydraulic System Capacity:
Approximately 5-7 gallons (e.g., 19 - 26 Liters) for the combined transmission, differential, and hydraulic reservoir. (Exact capacity in manual).
Coolant Type:
Ethylene glycol antifreeze solution, typically a 50/50 mix with distilled water. (Refer to manual for specific IH coolant recommendations).
Common Wear Items:
Clutch wear, hydraulic pump output degradation, steering box wear, brake shoe wear, carburetor issues (gumming/clogging), radiator leaks, exhaust manifold cracks.
Electrical System Challenges:
Aging wiring harnesses, corroded connections, starter motor solenoid issues, generator/alternator output problems.
Engine Specific Problems:
Potential for valve guide wear, piston ring blow-by, or head gasket failure in high-mileage or poorly maintained engines.
Brand Heritage:
International Harvester (IH) has a long and storied history in agricultural machinery, known for its robust and durable tractors. The Cadet line was IH's entry into the sub-compact and compact tractor market.
Model Evolution:
The Cadet line evolved through various series and models. The '85' designation likely refers to a specific generation or horsepower rating within the Cadet series, following earlier models like the 70, 72, 74, and preceding later models or variations.
Production Years:
The IH Cadet line was produced roughly from the early 1960s through the mid-1970s, with specific model runs for each designation. The Cadet 85 likely falls within the mid to late 1960s or early 1970s.
Manufacturing Location:
Primarily manufactured by International Harvester in the United States.
Brand Reputation:
International Harvester tractors are generally recognized for their durability, robust engineering, and long service life, earning a strong reputation among farmers and collectors.
Operator Comfort Rating:
Basic. Operator comfort was a secondary consideration to utility and durability in this era of tractor design. Suspension seats and vibration dampening were minimal.
Safety Certifications:
Compliance with applicable safety standards of the era. Specific certifications would be product of the time and jurisdiction.
