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IH International

IH International Harvester Hydro 100 186 & 1466-1468-1486-1566-1568-1586 Complete Workshop Service Repair Manual

IH International Harvester Hydro 100 186 & 1466-1468-1486-1566-1568-1586 Complete Workshop Service Repair Manual

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Machine data plateRef 66601
Brand
IH International
Equipment
Tractors
Models covered
1586, International Harvester
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your serial range? Ask us before you buy
🏷️ Basic Information
Identification
Make:
International Harvester (IH)
Model:
Hydro 100, 1466, 1468, 1486, 1566, 1568, 1586
Model Variants:
Hydro 100 (hydrostatic drive), 1466, 1468, 1486 (2WD), 1566, 1568, 1586 (2WD)
Production Years Covered:
1972-1980 (approx.)
👋 Introduction
Market Position
Target Audience:
Farmers, ranchers, agricultural contractors, and DIY enthusiasts who own or service IH tractors from the 1970s.
Competitive Advantage
Comprehensive Coverage:
Covers all models and all engines, trims, and transmission types, eliminating the need for multiple manuals.
Instant Delivery:
Downloadable PDF, accessible immediately after purchase, saving shipping time and costs.
Key Features
Step-by-Step Instructions:
Detailed procedures with illustrative pictures for all service and repair tasks.
Lifetime Access:
Own the manual forever; print any page or chapter as needed.
Compatibility:
Works on PC, Mac, tablets, and smartphones.
📋 Manual Details
Manual Specifications
Coverage Areas:
All service and repair procedures A-Z, including engine, transmission, hydraulics, electrical, and more.
Page Count:
Approximately 2000 pages (typical for such comprehensive service manuals).
Manual Type:
Complete Workshop Service Repair Manual
Language:
English
File Format:
PDF (portable document format)
Delivery Method:
Instant download link sent to your email after payment.
📖 Manual Coverage
Systems Covered
Engine:
Complete engine service, overhaul, and repair procedures for all engine options.
Transmission:
Detailed coverage of standard gear transmissions and hydrostatic drive (Hydro 100).
Hydraulics:
Hydraulic system diagnostics, repair, and adjustment for lift and steering.
Electrical:
Wiring diagrams, starter, alternator, and electrical component troubleshooting.
Chassis:
Front axle, steering, brakes, and wheels maintenance.
Power Take-Off (PTO):
PTO clutch, shaft, and speed control service.
Cooling System:
Radiator, water pump, thermostat, and cooling system flushing.
Fuel System:
Fuel tank, fuel pump, injectors, and carburetor or fuel injection adjustments.
Procedures Included
Maintenance Schedules:
Recommended service intervals and checklists.
Diagnostics:
Symptoms and troubleshooting charts for common issues.
Disassembly/Assembly:
Step-by-step disassembly and reassembly instructions with clear pictures.
Overhaul:
Complete engine and transmission overhaul guidance.
Adjustment:
Procedures for adjusting clutches, valves, brakes, and other components.
Specifications:
Torque specs, clearances, and other essential engineering data.
Technical Depth
Detail Level:
Covers every service and repair procedure from basic maintenance to major overhauls.
Illustrations:
Extensive diagrams and pictures to aid in understanding.
Parts Information
Part Numbers:
OEM part numbers and interchange information where applicable.
Torque Specs:
Critical torque values for bolts and fasteners.
📊 Manual Specifications
Technical Specifications
File Type:
PDF (Portable Document Format)
Compatibility:
All PC, Mac, tablets, mobile phones, and other devices that support PDF.
Requirements:
Adobe Reader (free) or any PDF viewer.
Searchability:
Searchable text (check if PDF is OCR'd; likely searchable)
Printing and Binding
Print Quality:
High-quality printable pages; print any page or entire manual.
Binding Type:
Digital PDF - no physical binding. Suitable for digital storage or self-printing.
Paper Type:
N/A - digital format. For printing, standard printer paper is sufficient.
⚙️ Engine Specifications
Engine Options
Engine Types:
Diesel engines: D-358 (Hydro 100), DT-436 (1466, 1486), DT-466 (1566, 1586) – approximate displacement and aspiration.
Displacement Range:
Approximately 5.9L (358 cu in) to 7.6L (466 cu in).
Power Range:
Roughly 100-160 horsepower (PTO rating) depending on model.
Fuel System:
Diesel with direct injection or pre-chamber system; some models have turbocharging.
Performance
Torque Rise:
N/A - not specified in manual; varies by model.
Rated RPM:
Typically around 2200-2400 RPM.
Lubrication
Oil Capacity:
N/A - consult manual for specific model.
Oil Type:
API class CC/CD or higher; SAE 30 or 15W-40.
🔧 Transmission
Standard Transmission
Type:
Full power shift transmission (e.g., 12F/4R for 1466, 1486, 1566, 1586) - typical for models without Hydro drive.
Speeds:
Various forward and reverse gears (e.g., 12 forward, 4 reverse) depending on model.
Features:
Constant mesh, synchronized shifts, planetary gears.
Hydrostatic Drive (Hydro 100)
Type:
Hydrostatic transmission (infinite speeds) for Hydro 100 model.
Operation:
Single lever control for speed and direction.
Features:
Smooth acceleration and precise speed control.
Optional Transmission
Available Options:
Creeper ranges or slow-speed options for some models.
📐 Dimensions
Exterior Dimensions
Wheelbase:
Approximately 200-250 cm (80-100 inches), varies by model.
Overall Length:
Approximately 350-450 cm (140-180 inches), includes 3-point hitch.
Width:
Approximately 200-300 cm (80-120 inches), depending on tire width.
Weights
Curb Weight:
Approximately 4,500-8,000 kg (10,000-18,000 lbs) depending on model and configuration.
🛡️ Safety Features
Safety Ratings
Crash Test Information:
Not applicable for agricultural tractors; not rated by safety agencies.
Active Features
Brakes:
Hydraulic disc brakes or band brakes, independent left/right steering brakes.
Lighting:
Headlights, tail lights, flashing warning beacon (if equipped).
Passive Features
ROPS Cab:
Rollover protective structure and seat belt on cab-equipped models.
Operator Presence:
Safety interlocks for transmission and PTO.
💡 Technology Features
Infotainment
Audio System:
No factory audio system on these tractors; aftermarket options only.
Driver Assistance
Hitch Control:
Draft/position control on 3-point hitch.
Monitoring:
Basic instrument cluster with engine temperature, oil pressure, fuel level, and tachometer.
🔧 Maintenance
Service Intervals
Engine Oil:
Change every 100 hours or annually, whichever comes first.
Hydraulic Fluid:
Check and replace per manual guidelines.
Air Filter:
Clean or replace every 200 hours or as needed.
Fuel Filter:
Replace every 400 hours.
Coolant:
Check and flush every 1200 hours or 2 years.
Fluid Specifications
Engine Oil:
API CC/CD, SAE 30 or 15W-40 depending on temperature.
Transmission/Hydraulic Oil:
IH Hy-Tran fluid or equivalent.
Coolant:
Ethylene glycol based antifreeze with corrosion inhibitors.
Known Issues
Common Wear Items:
Hydraulic pump seals, PTO clutch, wiring insulation, and engine injectors.
📚 Vehicle History
Heritage
Manufacturer:
International Harvester (IH), a renowned American agricultural machinery manufacturer.
Model Evolution:
The Hydro 100 and 66/86 series were part of IH's lineup in the 1970s, evolving from earlier models with improved power and features.
Production Location:
Farmall plant in Rock Island, Illinois, USA.
🏆 Awards & Recognition
Industry Recognition
Awards:
No specific awards documented for these models, but they are highly respected in the farming community for reliability and power.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the serial range before you buy

Manufacturers change procedures and part numbers by serial-number break. If your data plate shows a serial prefix that is not listed above, contact us with the model and serial number and we will confirm coverage before you order.

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