John Deere 8120, 8220, 8320, 8420 and 8520 Tractors Operation and Test Manual (TM1980)

Illustrated factory Operation and Test Manual for John Deere Tractors Models 8120, 8220, 8320, 8420 and 8520.

This manual will assist you in diagnosing, and troubleshooting for your tractor.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.

Covered Models:
   8120
   8220
   8320
   8420
   8520

Format: PDF, 2337 pages
Language: English
Publication Date: 29 Jul 2019
Table of Contents:
   Introduction
      Foreword
   GENERAL
      Safety
      General References
   SERVICE CODES
      ACU Code Diagnostics
      AMS General Diagnostic Codes
      ASU Code Diagnostics
      ATC Code Diagnostics
      CCU Code Diagnostics
      ECU Code Diagnostics
      EHo Code Diagnostics
      HCU Code Diagnostics
      ICU Code Diagnostics
      JdL Code Diagnostics
      PCU Code Diagnostics
      SCU Code Diagnostics
      SCo Code Diagnostics
      SSU Code Diagnostics
      SUP Code Diagnostics
   OBSERVABLE SYMPTOMS
      Axles
      Electrical
      Ag Management Solutions (AMS)
      Hitch
      Heating, Ventilation and Air Conditioning (Standard)
      Heating, Ventilation and Air Conditioning - CLIMATRAK (ATC) (-010000)
      Heating, Ventilation and Air Conditioning - CLIMATRAK (ATC) (010001-)
      Operator Station
      Power Take-Off
      Selective Control Valve
      Steering
      Transmission
      Hydraulics
   SYSTEM DIAGNOSIS
      Electrical
      Transmission
      Drive Systems
      Steering and Brake Systems
      Hydraulic System
      CLIMATRAK (ATC) System (010001-)
      Heated Seat
   ENGINE
      Operational Checks
      Tests and Adjustments
      Theory of Operation
      Schematics and Diagrams
   FUEL AND AIR
      Theory of Operation
   ELECTRICAL
      Tests and Adjustments
      Theory of Operation
      Schematics and Diagrams
   CONTROL UNITS
      Service Codes
      ACU References
      ASU References
      CLIMATRAK (ATC) References
      CCU References
      ECU References
      EHo References
      HCU References
      ICU References
      Implement Management System (IMS) References
      PCU References
      SCU References
      SCo References
      SSU References
      SUP References
   AG MANAGEMENT SOLUTIONS (AMS) - GREENSTAR
      GREENSTAR System References
   AG MANAGEMENT SOLUTIONS (AMS)-JDLINK
      Accessing Diagnostic Addresses and Codes
      Diagnostic Trouble Codes
      Diagnostic Addresses
      JDLINK Machine Messenger Diagnostics
   AG MANAGEMENT SOLUTIONS (AMS) - AUTOTRAC
      How to Use This Diagnostic Information
      Accessing Diagnostic Addresses and Codes
      Diagnostic Trouble Codes
      AutoTrac Identification
      AutoTrac Diagnostics - 8000 Series Factory Installed
      AutoTrac Diagnostics - 8000 Series Field Installed
      GREENSTAR Parallel Tracking Identification
      Parallel Tracking Diagnostics - 8000 Series Factory Installed
      Parallel Tracking Diagnostics - 8000 Series Field Installed
      GREENSTAR Display Diagnostics
      GREENSTAR Mobile Processor Diagnostics
      STARFIRE Receiver Diagnostics
      GREENSTAR KeyCard Diagnostics
      AutoTrac CAN Bus Identification
      AutoTrac CAN Bus Diagnostics - 8000 Series Factory Installed
      AutoTrac CAN Bus Diagnostics - 8000 Series Field Installed
      AutoTrac CCD Bus Identification
      AutoTrac CCD Bus Diagnostics - 8000 Series Factory Installed
      AutoTrac CCD Bus Diagnostics - 8000 Series Field Installed
      AutoTrac Power Identification
      AutoTrac Power Diagnostics - 8000 Series Factory Installed
      AutoTrac Power Diagnostics - 8000 Series Field Installed
      AutoTrac Status Identification
      AutoTrac Status Diagnostics - 8000 Series Factory Installed
      AutoTrac Status Diagnostics - 8000 Series Field Installed
      AutoTrac Steering Response Identification
      AutoTrac Steering Response Diag. - 8000 Series Factory Installed
      AutoTrac Steering Response Diag. - 8000 Series Field Installed
      AutoTrac Steering Control Unit Identification
      AutoTrac Steering Control Unit Diag - 8000 Series Factory Installed
      AutoTrac Steering Control Unit Diag - 8000 Series Field Installed
      Circuit Code Listing
      Connector Information
   AG MANAGEMENT SOLUTIONS (AMS) -FIELD DOC
      GPS Position and StarFire Receiver Operation and Tests
      FIELD DOCFIELD DOC is a trademark of Deere & Company Basic Operation and Tests
   POWERSHIFT TRANSMISSION
      Operational Checks
      Tests And Adjustments
      Theory of Operation
      Schematics and Diagrams
   DRIVE SYSTEMS
      Tests And Adjustments
      Theory of Operation
      Schematics and Diagrams
   STEERING AND BRAKES
      Preliminary Checks
      Operational Checks
      Tests And Adjustments
      Theory of Operation
      Schematics and Diagrams
   HYDRAULIC SYSTEM
      Preliminary Checks
      Operational Checks
      Tests And Adjustments
      Theory of Operation
      Schematics and Diagrams
   OPERATOR STATION
      Preliminary Checks
      Operational Checks
      Tests And Adjustments
      Theory Of Operation
      Schematics and Diagrams
   TOOLS
      Fabricated Tools
      Test Kits
      Section 246A
      Section 246B
      Section 246C
      Section 246D