John Deere 6120-6420, 6120L-6520L Tractors Repair TM4647 Technical Manual PDF

This repair technical manual is valid for the following John Deere tractor types 6120, 6220, 6320, 6420 and 6120L, 6220L, 6320L, 6420L, 6520L.
This manual is written for an experienced technician.
Essential tools required in performing certain service work are identified in this manual and are recommended for use.
Technical manual is designed to work on a personal computer or laptop. This manual comes in PDF format. To view this information you need to install Adobe Reader. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

For complete service information also see:

• CTM4687 - Front Wheel Drive Axles AS, MS Series
• CTM4820 - Front-Wheel Drive Axles 700 Series

CONTENTS:

• SECTION 05—SAFETY
  • Group 05—Safety Measures
  • Group 20—Differential Drive Shaft Assembly
• SECTION 10—GENERAL INFORMATION
  • Group 05—Specifications
  • Group 10—Tune-Up
  • Group 15—Predelivery Inspection
• SECTION 20—ENGINE
  • Group 00—Installing and Removing Components
• SECTION 30—FUEL, AIR INTAKE, COOLING AND EXHAUST SYSTEMS
  • Group 05—Speed Control
  • Group 10—Fuel System
  • Group 15—Air Intake System
  • Group 20—Cooling System
  • Group 25—Cold-Weather Starting Aid
  • Group 30—Exhaust System
• SECTION 40—ELECTRICAL SYSTEM
  • Group 05—Connectors
  • Group 10—Wiring Harnesses
  • Group 15—Charging Circuit
  • Group 20—Starter Motor Circuit
  • Group 25—Fuses, Relays and Switches
  • Group 30—Monitoring Systems
  • Group 40—Electrical Components
• SECTION 50—SYNCROPLUS TRANSMISSION
  • Group 00—Installing and Removing Components
  • Group 05—Transmission Shift Controls
  • Group 10—Perma Clutch II Module
  • Group 15—Gear Transmission
• SECTION 51—POWER REVERSER TRANSMISSION
  • Group 00—Installing and Removing Components
  • Group 05—Transmission Shift Controls
  • Group 10—Power Reverser Module
  • Group 15—Gear Transmission
• SECTION 53—AUTOPOWR/IVT TRANSMISSION
  • Group 00—Installing and Removing Components
  • Group 05—Transmission Shift Controls
  • Group 10—Input Housing
  • Group 15—Output Housing
• SECTION 55—POWRQUAD, POWRQUAD PLUS AND AUTOQUAD TRANSMISSIONS
  • Group 00—Installing and Removing Components
  • Group 05—Transmission Shift Controls
  • Group 10—PowrQuad Module
  • Group 15—Creeper Transmission
  • Group 20—Option Transmission
  • Group 25—Range Transmission
• SECTION 56—DRIVE SYSTEMS
  • Group 00—Installing and Removing Components
  • Group 05—U-Jointed Shafts and Torsion Damper
  • Group 10—Front-Wheel Drive Clutch
  • Group 15—Differential
  • Group 20—Hydraulic Pump Drive
  • Group 25—Final Drives
  • Group 30—Rear PTO
  • Group 35—Front PTO
  • Group 40—Front Implement Drive
• SECTION 60—STEERING AND BRAKES
  • Group 05—Hydrostatic Steering
  • Group 10—Steering Cylinder
  • Group 15—Brake Valve
  • Group 20—Rear Brakes
  • Group 40—AutoTrac
• SECTION 70—Hydraulic System
  • Group 05—Controls
  • Group 10—Hydraulic Pump and Charge Oil Pump
  • Group 15—Valves
  • Group 20—Rockshaft
  • Group 25—Selective Control Valves and Couplers
  • Group 30—Independent Control Valve (ICV)
• SECTION 80—MISCELLANEOUS
  • Group 00—Installing and Removing Components
  • Group 05—Main Frame
  • Group 10—Front Axle
  • Group 15—Front Wheels, Rear Wheels and Fenders
  • Group 20—Trailer Mounting and Swinging Drawbar
  • Group 25—Triple Link Suspension (TLS) of Front-Wheel Drive Axle
• SECTION 90—OPERATOR’S CAB
  • Group 00—Installing and Removing Components
  • Group 05—Controls and Instruments
  • Group 10—Air Conditioning System
  • Group 11—ClimaTrak
  • Group 15—Heating System
  • Group 20—Seats
  • Group 25—Operator’s Cab
  • Group 26—Low-Clearance Cab
  • Group 30—Cab Suspension
• SECTION 99—Special Tools (Dealer-Fabricated)
  • Group 05—Special Tools (Dealer-Fabricated)
  • Group 10—Special Tools (available from the dealer)