John Deere 6020 to 6620 Tractors & SE Tractors Repair TM4750 Technical Manual PDF

This repair manual applies to the following tractor types: 6020, 6120, 6220, 6320, 6420, 6420S, 6520, 6620, 6820, 6920 and 6920S.
SE tractors: 6020, 6120, 6220, 6320, 6420 and 6520.
Workshop Manual includes technical specifications, repair information, identifications numbers, tools and materials, component location, schematics and harnesses, theory of operation, operation and diagnostics, tests and adjustments, repair manuals and other service information.
This manual comes in PDF and includes 1948 pages, which are printable. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

Manual covers:
Part 1 - Sections 05 to 55
Part 2 - Sections 56 to 99

For complete service information also see:

• TM4741 - Tractors and SE Tractors 6020 to 6920S Operation and Tests
• TM4726 - Tractors and SE Tractors 6020 to 6920S Diagnostics
• CTM4687 - Front Wheel Drive Axles AS, MS Series
• CTM4820 - Front-Wheel Drive Axles 700 Series

CONTENTS:

• SECTION 05—SAFETY
  • Group 05—Safety Measures
• SECTION 10—GENERAL INFORMATION
  • Group 05—Specifications
  • Group 10—Tune-Up
  • Group 15—Predelivery Inspection
• SECTION 20—ENGINE
  • Group 00—Engine Removal and Installation
• SECTION 30—FUEL, AIR INTAKE, COOLING AND EXHAUST SYSTEMS
  • Group 05—Speed Control Linkage
  • Group 10—Fuel System
  • Group 15—Air Intake System
  • Group 20—Cooling System
  • Group 25—Cold-Weather Starting Aids
  • 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—Removal and Installation of Transmission Components
  • Group 05—Transmission Shift Controls
  • Group 10—Perma Clutch II Module
  • Group 15—Gear Transmission
• SECTION 51—POWER REVERSER TRANSMISSION
  • Group 00—Removal and Installation of Power Reverser Module
  • Group 05—Transmission Shift Controls
  • Group 10—Power Reverser Module
  • Group 15—Gear Transmission
• SECTION 53—AUTOPOWR/IVT TRANSMISSION
  • Group 00—Removing and Installing the AutoPowr/IVT Transmission
  • Group 05—Transmission Shift Controls
  • Group 10—Input Housing
  • Group 15—Output Housing
  • Group 20—Assembling the Differential Drive Shaft
• SECTION 55—POWRQUAD, POWRQUAD PLUS AND AUTOQUAD TRANSMISSIONS
  • Group 00—Removal and Installation of 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—Removal and Installation of 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 Options
  • Group 35—Front PTO
  • Group 40—Front Implement Drive
• SECTION 60—STEERING AND BRAKES
  • Group 05—Hydrostatic Steering
  • Group 10—Steering Cylinder(s)
  • Group 15—Brake Valve
  • Group 20—Rear Brakes
  • Group 25—Handbrake
  • Group 30—Hydraulic Trailer Brake
  • Group 35—Air Brakes
• SECTION 70—HYDRAULIC SYSTEM
  • Group 05—Controls
  • Group 10—Hydraulic Pump and Charge Pump (PFC Hydraulic System)
  • Group 11—Hydraulikpumpe (PC-Hydrauliksystem)
  • Group 15—Valves
  • Group 20—Rockshaft
  • Group 25—Selective Control Valves and Couplers
  • Group 30—Independent Control Valve
• SECTION 80—MISCELLANEOUS
  • Group 00—Removal and Installation of Components
  • Group 05—Main Frame
  • Group 10—Front Axle
  • Group 15—Front and Rear Wheels
  • Group 20—Trailer Mounting and Swinging Drawbar
  • Group 25—Triple Link Suspension (TLS) of Front-Wheel Drive Axle
  • Group 30—Pick-Up Hitch
• SECTION 90—OPERATOR’S CAB
  • Group 00—Removal and Installation of Components
  • Group 05—Controls and Instruments
  • Group 10—Air-Conditioning System
  • Group 15—Heating System
  • Group 20—Seats
  • Group 25—Operator’s Cab
  • Group 30—Cab Suspension
• SECTION 99—SPECIAL TOOLS (DEALER-FABRICATED)
  • Group 05—Special Tools (Dealer-Fabricated)