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John Deere Tractors 6120,6220, 6320,6420, 6120L,6220L, 6320L,6420L,6520L Diagnostic Service Manual TM4646

Illustrated Factory Diagnosis and Tests Service Manual for John Deere 2WD or MFWD Tractors 6120, 6220, 6320, 6420, 6120L, 6220L, 6320L, 6420L & 6520L

This manual contains high quality images, circuit diagrams, diagnostic procedures to help you to diagnostic, troubleshoot and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.

This is Diagnostic manual, including electical wiring diagrams, Repair manual are sold separate.

Language: English
Format: PDF, 4872 pages

Covered models:
  6120
  6220
  6320
  6420
  6120L
  6220L
  6320L
  6420L
  6520L

   
Contents:
{0}Foreword
  Version date
  GENERAL INFORMATION
    Safety Measures
    General References
  ENGINE
    Operational Check-Out
    Tests and Adjustments
  FUEL, AIR INTAKE AND COOLING SYSTEMS
    Tests and Adjustments
    Operation
  ELECTRICAL SYSTEM
    Sub-System Diagnostics (Cab)
    Sub-System Diagnostics (Open Operator's Station)
    Component Tests
    Functional Schematics (AutoPowr/IVT Transmission)
    Functional Schematics (PowrQuad Plus, AutoQuad and AutoQuad Plus Transmissions)
    Functional Schematics (Open Operator's Station)
    Summary of Wiring Harnesses
    Wiring Harnesses
    Wiring Harnesses (Continued)
    Wiring Harnesses from Serial Number 398656
    Wiring Harnesses from Serial Number 398656 (Continued)
  ELECTRONIC CONTROL UNITS
    Operation and General Information on Diagnostics
    Data BUS Systems, Theory of Operation
    ATC - Automatic Temperature Control Unit
    BCU - Basic Control Unit
    BIF - Basic Informator
    ECU - Engine Control Unit
    EPC - Control Unit for PowrQuad Plus, AutoQuad and AutoQuad Plus Transmissions
    JDL Control Unit for JDLink
    PLC - Park Lock Controller
    PRF - Performance Monitor
    SFA - Control Unit for Front-Wheel Drive Axle and Cab Suspension
    SIC - Control Unit for Electrically Actuated Selective Control Valves
    SSU - Control Unit for AutoTrac
    TCU - Control Unit for AutoPowr/IVT Transmission
    TEC - Control Unit for Tractor Equipment Interface
    UIC - User Interface Controller
    UIM - User Interface Module, Keyboard for ISOBUS Display
  SYNCROPLUS TRANSMISSION
    Introductory Checks
    Operational Check-Out
    Tests and Adjustments
    Operation
  POWER REVERSER TRANSMISSION
    Operational Check-Out
    Tests and Adjustments
    Operation
  AUTOPOWR/IVT TRANSMISSION
    Operational Check-Out
    Tests and Adjustments
    Operation
  POWRQUAD, POWRQUAD PLUS, AUTOQUAD AND AUTOQUAD PLUS TRANSMISSIONS
    Operational Check-Out
    Tests and Adjustments
    Operation
  DRIVE SYSTEMS
    Operational Check-Out
    Tests and Adjustments
    Operation
  STEERING AND BRAKES
    Introductory Checks
    Operational Check-Out
    Tests and Adjustments
    Operation
  HYDRAULIC SYSTEM
    Operational Check-Out
    Tests and Adjustments
    Operation
  MISCELLANEOUS
    Operational Check-Out
    Tests and Adjustments
    Operation
  OPERATOR'S CAB
    Operational Check-Out
    Tests and Adjustments
    Operation
  SPECIAL TOOLS
    Special Tools (Dealer-Fabricated)
    Special Tools and Test Equipment