DOWNLOAD COMPLETE DIAGNOSTIC MANUAL FOR JOHN DEERE 3420 TELESCOPIC HANDLERS | PUBLICATION NUMBER - TM8108

The John Deere 3420 Telescopic Handlers TM8108 Diagnostic Manual PDF provides detailed diagnostic and troubleshooting information for service professionals and technicians. This manual helps identify faults, understand system operation, perform accurate tests, and support efficient repairs and maintenance. Ideal for owners, mechanics, and workshops working with John Deere 3420 telescopic handlers, it serves as a useful reference for diagnosing electrical, hydraulic, mechanical, and operational issues.

CONTENTS:
 Introduction
      Foreword
      Version Date
   HYD - Diagnosis
      HYD - Diagnosis
   Engine
      Tests and Troubleshooting
   Fuel/Air Intake Systems - Tests
      Air Intake System
   Electrical System - General Information
      General Information
      Test Equipment
   Electrical System - Tests (3215 and 3415) up to Serial No. 206800
      Functional Schematics, Wiring and Harness Diagrams
      Section 1: Starting Motor Power Supply
      Section 2: Seat Adjustment
      Section 3: Wiper/Washer System
      Section 4: Heater/Air Conditioning System
      Section 5: Radio, Cab Interior Light and Horn
      Section 6A: Lights (Region II)
      Section 6B: Lights (North America)
      Section 7: Reverse Travel Alarm, Cab Electrical Socket
      Section 8: Instruments
      Section 9: Forward Stability Indicator (Load Monitor)
      Section 10: Steering Modes
      Section 11A: Power Train, Shuttle Shift Transmission
      Section 11B: Power Train, Power Shift Transmission
      Section 12: Boom Control System
      Section 13: Rear Auxiliary Hydraulic Functions
      Section 14: Engine Control Unit
      Load Indicator - Without Weighing Option (Not For NA)
      Load Indicator - With Weighing Option (Not For NA)
      Calibration of Weighing Device
   Electrical System - Tests (3220 and 3420) up to Serial No. 206800
      Functional Schematics, Wiring and Harness Diagrams
      Section 1: Starting Motor Power Supply
      Section 2: Seat Adjustment
      Section 3: Wiper/Washer System
      Section 4: Heater/Air Conditioning System
      Section 5: Radio, Cab Interior Lighting and Horn
      Section 6A: Lights (Region II)
      Section 6B: Lights (North America)
      Section 7: Reverse Travel Alarm, Cab Electrical Socket
      Section 8: Instruments
      Section 9: Forward Stability Indicator (Load Monitor)
      Section 10: Steering Modes
      Section 11A: Power Train, Shuttle Shift Transmission
      Section 11B: Power Train, Power Shift Transmission
      Section 12: Boom Control System
      Section 13: Rear Auxiliary Hydraulic Functions
      Section 14: Engine Control Unit
   Electrical System - Tests (3215/3415) - from Serial No. 206801
      Functional Schematics, Wiring and Harness Diagrams
      Section 1: Starting Motor Power Supply
      Section 2: Seat Adjustment
      Section 3: Wiper/Washer System
      Section 4: Heater/Air Conditioning System
      Section 5: Radio, Cab Interior Light and Horn
      Section 6A: Lights (Region II)
      Section 7: Reverse Travel Alarm, Cab Electrical Socket
      Section 8: Instruments
      Section 9: Forward Stability Indicator (Load Monitor)
      Section 10: Steering Modes
      Section 11A: Power Train, Shuttle Shift Transmission
      Section 11B: Power Train, Power Shift Transmission
      Section 12: Boom Control System
      Section 13: Rear Auxiliary Hydraulic Functions
   Electrical System - Tests (3220/3420) - from Serial No. 206801
      Functional Schematics, Wiring and Harness Diagrams
      Section 1: Starting Motor Power Supply
      Section 2: Seat Adjustment
      Section 3: Wiper/Washer System
      Section 4: Heater/Air Conditioning System
      Section 5: Radio, Cab Interior Lighting and Horn
      Section 6A: Lights (Region II)
      Section 6B: Lights (North America)
      Section 7: Reverse Travel Alarm, Cab Electrical Socket
      Section 8: Instruments
      Section 9: Forward Stability Indicator (Load Monitor)
      Section 10: Steering Modes
      Section 11A: Power Train, Shuttle Shift Transmission
      Section 11B: Power Train, Power Shift Transmission
      Section 12: Boom Control System
      Section 13: Rear Auxiliary Hydraulic Functions
      Section 14: Engine Control Unit
   Electronic Control Units up to Serial No. 206800
      ECU - Engine Control Unit (Level 12)
      TCU - Transmission Control Unit
      HYD - Hydraulic Control Unit
      Load Indicator - Without Weighing Option (Not For NA)
      Load Indicator - With Weighing Option (Not For NA)
      Calibration of Weighing Device
   Electronic Control Units from Serial No. 206801
      Instrument Panel Adjustment from Serial No. 206801
      ECU - Engine Control Unit (Level 12)
      TCU - Transmission Control Unit
      HYD - Hydraulic Control Unit
      Load indicator, Setting from Serial No. 206801
      Load Indicator - With Weighing Option from Serial No. 206801
   Power Train - Tests
      Drive - Theory of Operation
      Torque Converter - Tests
      Shuttle Shift Transmission - Tests
      Power Shift Transmission - Tests
      Shuttle Shift Transmission Diagnosis
      Power Shift Transmission Diagnosis
   Steering, Brakes - Tests up to Serial No. 206800
      Brake System
      Brake System Tests
      Hydraulic Trailer Brake Valve
      Steering System - Theory of Operation
   Steering, Brakes - Tests from Serial No. 206801
      Brake System from Serial No. 206801
      Brake System Tests
      Hydraulic Trailer Brake Valve
      Steering System - Theory of Operation
      Steering Test
      Air Brake System
   General Information - Hydraulic System
      Valves - Theory of Operation
   Hydraulic System 3215 and 3415 - up to Serial No. 206800
      Hydraulic System - Hydraulic Circuit Diagram and Theory of Operation up to Serial No. 206800
      Hydraulic System - Tests and Adjustments
   Hydraulic System 3220 and 3420 - up to Serial No. 206800
      Hydraulic System - Hydraulic Circuit Diagram and Theory of Operation up to Serial No. 206800
      Hydraulic Pump - Operation, Tests and Adjustments
      Hydraulic System - Tests
   Hydraulic System 3215 and 3415 - from Serial No. 206801
      Hydraulic System - Hydraulic Circuit Diagram and Theory of Operation from Serial No. 206801
      Hydraulic System - Tests and Adjustments
   Hydraulic System 3220 and 3420 - from Serial No. 206801
      Hydraulic System - Hydraulic Circuit Diagram and Theory of Operation from Serial No. 206801
      Hydraulic Pump - Operation, Tests and Adjustments
      Hydraulic System - Tests
   Heater, Air Conditioning - Tests
      Theory of Operation
      Tests

TOTAL PAGE - 846
FILE FORMAT - PDF
FILE LANGUAGE - ENGLISH
PDF FILE WILL BE SENT TO YOUR GIVEN EMAIL AFTER PURCHASE