John Deere 8120-8520 Tractors Repair Tehnical Manual PDF

John Deere technical manual TM1970 contents of full-service information for tractors this brand next models:

8120
8220
8320
8420
8520

All information for these tractors is divided into two parts: repair and operation and tests. Repair sections tell how to repair the components. Operation and test sections help you identify the majority of routine failures quickly. On this page we will look at the repair manual, and as for the operation and testing manual, you can read it here.

Information is organized in groups for the various groups. At the beginning of each group are summary listings of all applicable essential tools, service equipment, and tools, other materials needed to do the job, service parts kits, specifications, wear tolerances, and torque values. They are on-the-job guides containing only the vital information needed for diagnosis, analysis, testing, and repair.

The technical manual has a friendly and easy to use interface that supports English. Manual comes in PDF format, includes 1160 pages. All pages are printable and readable. For better reading, copying, and printing - you need to use this manual using the Adobe PDF Reader.

Contents:

• 1. General Information
  • General Specifications
  • Overall Dimensions
  • Sealants and Adhesives Cross-Reference
  • Chart
  • Metric Bolt and Cap Screw Torque Values
  • Unified Inch Bolt and Cap Screw Torque
  • Values
  • Glossary of Terms
• 2. Engine
  • Essential or Recommended Tools
  • Specifications
  • Engine
  • Front Frame
  • Remove
  • Engine Repair
• 3. Fuel and Cooling Systems
  • Diesel Fuel System
  • Specifications
  • Fuel Tank
  • Fuel Filter, Fuel Pump, System Bleed
  • Air Intake System
  • Specifications
  • Other Material
  • Service
  • Repair Aspirator
  • Engine Cooling System
  • Essential or Recommended Tools
  • Specifications
  • Test Radiator and Coolant Tank Cap
  • Radiator/Aftercooler
  • Auxiliary Drive Belt Routing
  • Belt Tensioners
  • Viscous Fan Drive
  • Vistronic Fan Drive
  • Coolers and Air Conditioning Condenser
  • Essential or Recommended Tools
  • Specifications
  • Other Material
  • Condenser
  • Hydraulic Oil Cooler
  • Leak Test
• 4. Electrical
  • Connectors
  • Wiring Harness Routings
  • Charging Circuit
  • Starting Circuit
  • Relays, Fuses, Solenoids, and Switches
  • Monitoring Systems and Sensors
  • Armrest Control
  • Implement and Accessory Connectors
  • Convenience and Accessory Components
• 5. Power Shift Transmission
  • Component Removal and Installation
  • Miscellaneous Repair
• 6. Drive Systems
  • Component Removal and Installation
  • Rear Differential and Input Quill
  • Final Drives
  • Rear PTO
  • Hydraulic Pump Drive
  • MFWD Clutch
  • Drivelines
• 7. MFWD Axles
  • Component Removal and Installation
  • Final Drives
  • Axle Housing
  • Differential
  • Input Gear Train
  • Oscillation
  • Secondary Brake
• 8. INDEPENDENT LINK SUSPENSION Axle
  • Component Removal and Installation
  • Controls
  • Final Drives
  • Drive Shafts
  • Brakes
  • Differential
  • Steering
  • Suspension
• 9. Steering and Brakes
  • Steering Column
  • Specifications
  • Repair Steering Column (Standard and
  • AutoTrac)
  • Steering Control Assembly
  • Specifications
  • Remove and Install Steering Control
  • Assembly (Standard and AutoTrac)
  • Steering Control Assembly
  • Flowmeter
  • Steering Cylinders
  • Other Material
  • Service Parts Kits
  • Specifications
  • Steering Cylinders
  • Remove and Install
  • Two-Wheel Drive
  • MFWD
  • Brake Valve
  • Service Parts Kits
  • Specifications
  • General Repair Procedures
  • Brake Valve
  • Bleed Brakes
  • Check Manual Brakes
  • Brake Components
  • Specifications
  • Brake Pistons, Plates, and Disks
  • Trailer Brakes
  • Air Trailer Brakes
• 10. Hydraulics
  • Component Removal and Installation
  • Hydraulic System Repair and Cleanup
  • Tandem Hydraulic Pump (Steering-Brakes-Charge)
  • Secondary Hydraulic Pump (Hitch-SCV)
  • Filter Bypass
  • Hitch Valve, Selective Control Valves, and Couplers
  • Hitch
• 11. Miscellaneous
  • Hood
  • Position Hood Forward
  • Remove and Install Hood
  • Front Axle (Two-Wheel Drive)
  • Essential or Recommended Tools
  • Specifications
  • Other Material
  • Front Axle
  • Remove
  • Install
  • Pivot Support Bushings
  • Front Axle Pivot Pins
  • Knee Bushings
  • Wheel Bearings
  • Axle Pivot Pins
  • Wagon and Pick-Up Hitch
  • Specifications
  • Wagon Hitch
  • Pick-Up Hitch
• 12. Operator Station
  • Component Removal and Installation
  • Heating, Ventilating, and Air Seat Conditioning (HVAC)
  • Air Conditioning System
  • Air Suspension Seat
  • ACTIVE SEAT
  • Armrest
  • Cab Door and Windshield