John Deere 6020 to 6620 Repair Manual [Tractors]

Factory Service Repair Manual TM4750 (01OCT02) For John Deere Tractors. Step by step Instructions, illustrations, diagrams.
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Models

John Deere Tractors 6020, 6120, 6220, 6320, 6420, 6420S, 6520, 6620.
SE Tractors: 6020, 6120, 6220, 6320, 6420, 6520.

Contents

SAFETY
Safety Measures
GENERAL INFORMATION
Specifications
Tune-Up
Predelivery Inspection
ENGINE
Engine Removal and Installation
FUEL, AIR INTAKE, COOLING AND EXHAUST SYSTEMS
Speed Control Linkage
Fuel System
Air Intake System
Cooling System
Cold-Weather Starting Aids
Exhaust System
ELECTRICAL SYSTEM
Connectors
Wiring Harnesses
Charging Circuit
Starter Motor Circuit
Fuses, Relays and Switches
Monitoring Systems
Electrical Components
SYNCROPLUS TRANSMISSION
Removal and Installation of Transmission Components
Transmission Shift Controls
Perma Clutch II Module
Gear Transmission
POWER REVERSER TRANSMISSION
Removal and Installation of Power Reverser Module
Transmission Shift Controls
Power Reverser Module
Gear Transmission
AUTOPOWR/IVT TRANSMISSION
Removing and Installing the AutoPowr/IVT Transmission
Transmission Shift Controls
Input Housing
Output Housing
Assembling the Differential Drive Shaft
POWRQUAD, POWRQUAD PLUS AND AUTOQUAD TRANSMISSIONS
Removal and Installation of Components
Transmission Shift Controls
PowrQuad Module
Creeper Transmission
Option Transmission
Range Transmission
DRIVE SYSTEMS
Removal and Installation of Components
U-Jointed Shafts and Torsion Damper
Front-Wheel Drive Clutch
Differential
Hydraulic Pump Drive
Final Drives
Rear PTO Options
Front PTO
Front Implement Drive
STEERING AND BRAKES
Hydrostatic Steering
Steering Cylinder(s)
Brake Valve
Rear Brakes
Handbrake
Hydraulic Trailer Brake
Air Brakes
HYDRAULIC SYSTEM
Controls
Hydraulic Pump and Charge Pump (PFC Hydraulic System)
Hydraulikpumpe (PC-Hydrauliksystem)
Valves
Rockshaft
Selective Control Valves and Couplers
Independent Control Valve
MISCELLANEOUS
Removal and Installation of Components
Main Frame
Front Axle
Front and Rear Wheels
Trailer Mounting and Swinging Drawbar
Triple Link Suspension (TLS) of Front-Wheel Drive Axle
Pick-Up Hitch
OPERATOR’S CAB
Removal and Installation of Components
Controls and Instruments
Air-Conditioning System
Heating System
Seats
Operator’s Cab
Cab Suspension
SPECIAL TOOLS (DEALER-FABRICATED)
Special Tools (Dealer-Fabricated)