Complete Diagnostics Test manual for John Deere 6650, 6750, 6850, 6950 Self-Propelled Forage Harvester (S.N. before 503680), with all the service information to maintain, diagnose, and rebuild like professional mechanics.

John Deere 6650, 6750, 6850, 6950 Self-Propelled Forage Harvester workshop Operation & Test manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

TM4549 - John Deere Self-Propelled Forage Harvesters Models 6650, 6750, 6850, 6950 Technical Manual (Diagnosis & Tests).PDF
TM4549 - John Deere Self-Propelled Forage Harvesters Models 6650, 6750, 6850, 6950 Technical Manual (Diagnosis & Tests).epub

Total Pages: 1,556 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
  Engine
   Fuel, Air Intake and Cooling Systems
   Electrical System
   Power Train
      Replacing Main Drive Belt
      Angled Drive
      Transmission and Differential
      Final Drives
      Hydrostatic Drive, Variable Pump
      Hydrostatic Drive, Fixed-Displacement Motor
      Hydrostatic Drive, Oil Change
      Cam Lobe Motor
   Brakes, Steering, Rear Axle
      Brake Operating Assembly
      Brakes
      Hydrostatic Steering
      ROW-TRAK System
      Rear Axle
   Hydraulic System
      Accumulators
      Triple Hydraulic Pump
      Electromagnetic Control Valve
      Reverser Motor
      Hydraulic Motor - Discharge Spout
   Miscellaneous
      Fuel Tank Hood
   Operator`s Cab, Air Conditioning System
      Control Levers
      Cab Ventilation
      Replacing Cab Windows
      R134a Air Conditioning System
      Super Comfort Seat
   Harvesting Units
   Feeding System
      Length-of-Cut Transmission
      Reverser Clutch
      Electric Clutch
      Feed Roll Channel
      Feed Roll Assembly
      Locking Pawl
   Cutterhead Assembly
      Knife Sharpening Device
      Cutterhead
      Bottom and Outlet Bands
      Removing and Installing Stationary Knife
      Kernel Processor
      Power Chute
   Discharge Components
      Discharge Fan
      Blower Rotor and Rotor Bearings
      Discharge Spout
   General Information
   Engine
   Fuel, Air Intake and Cooling Systems
   Electrical System
      Test Equipment
      Electrical System Diagrams
      Batteries, Starting Motor, Alternator
      Safety Switches, Basic Relays
      Engine Shut-Off Device
      Instruments
      Electronic INFO-TRAK Monitor
      Turning Discharge Spout
      Raising/Lowering Discharge Spout
      Reel Fore-and-Aft Adjustment
      Raising Reel
      Reel Speed Adjustment
      676 Rotary Harvesting Unit (North America)
      Attaching Trailer
      Raising/Lowering Harvesting Unit
      Pressure Valves, Trailer Dump
      Main Clutch, Reverser
      Four-Wheel Drive
      Lighting System
      Work Lights
      Stop Lights, Horn
      Beacon Lights
      Fan, Air Conditioning System
      Windshield Wiper/Washer System
      Radio, Interior Lighting
      Rotary Radiator Screen, Reverse Travel Alarm
      Cigarette Lighter, Seat Compressor
      Spout Rinsing System
      Discharge Spout Flap Adjustment
      Main Electronic System
      Metal Detector
      Electronic Control Unit
      ROW-TRAK System
      POWR-SAVR
      676 Rotary Harvesting Unit (North America)
   Power Train
   Brakes, Steering, Rear Axle
      Brake Operating System
      Drum Brakes
      ROW-TRAK System
      ROW-TRAK Steering Function
      ROW-TRAK Calibration
   Hydraulic System
   Operator`s Cab
      Air Conditioning System
      Operator`s Seat

tm4549 - 6650,6750,6850,6950 self-propelled forage harvester ( -503680)

Table of Contents

Foreword

Section 05: Safety

Group 05: Safety Information

Live With Safety

Support Machine Properly

Wear Protective Clothing

Prepare for Emergencies

Work in Clean Area

Parking and Leaving the Forage Harvester

Remove Paint Before Welding or Heating

Handle Fluids Safely-Avoid Fires

Prevent Acid Burns

Prevent Battery Explosions

Avoid Heating Near Pressurized Fluid Lines

Illuminate Work Area Safely

Replace Safety Signs

Use Proper Lifting Equipment

Service Tires Safely

Practice Safe Maintenance

Avoid High-Pressure Fluids

Use Proper Tools

Service Machines Safely

Dispose of Waste Properly

Section 10: General Information

Group 05: Fuel, Lubricants and Coolant

Fuel 4

Handle Fuel Safely-Avoid Fires

Filling the Fuel Tank

Diesel Engine Oil

Engine Coolant

Transmission Oil

Transmission and Hydraulic Oil

Grease

Alternative and Synthetic Lubricants

Mixing of Lubricants

Lubricant Storage

Use Genuine John Deere Parts

Group 10: Torques for Hardware

Metric Bolt and Cap Screw Torque Values

Unified Inch Bolt and Cap Screw Torque Values

Group 15: Serial Numbers

Serial Number Plates

Forage Harvester Type Plate

Product Identification Number

Engine Serial Number - Cummins Engine

Engine Serial Number - Engine Type 6081

Engine Serial Number - Engine Type 6125

Operator's Cab Serial Number

Four Wheel Drive Motor Serial Number

Kernel Processor Serial Number

Three-Speed Transmission Serial Number

Final Drive Serial Number

Angled Drive (Main Gearcase) Serial Number

Length-of-Cut Transmission Serial Number

Group 20: Dimensions

Dimensions With Largest Tires

Section 20: Engine

Group 05: Removing and Installing Engine

Special or Essential Tools

Specifications

Prior to Removing Engine

Removing the Engine

Repairing the Engine

Rear Engine Mounting

Lateral Engine Mounting

Lateral Engine Mounting (12.5 L)

Rear Engine Mounting (12.5 L)

Section 30: Fuel, Air Intake and Cooling Systems

Group 05: Fuel Tank

General Information

Removing Fuel Tank

Removing Fuel Gauge Sending Unit

Installing the Fuel Gauge Sending Unit

Fuel Cooler

Replacing the Fuel Cooler

Prior to Removing the Cooling Elements

Removing the Cooling Elements

Installing the Cooling Elements

Group 10: Air Intake System

Air Cleaner and Muffler Assembly (6650)

Air Intake System (6650)

Air Cleaner and Muffler Assembly (6750, 6850)

Air Intake System (6750 and 6850)

Air Cleaner and Muffler Assembly (6950)

Air Intake System (6950)

Intercooler Location (6650, 6750, 6850)

Intercooler

Air Intake System (6950)

Group 15: Engine Cooling System

Engine Coolant

Location of Engine Radiator

Engine Cooling System (6950)

Removing the Radiator

Installing the Radiator

Replacing the Coolant Level Sending Unit

Replacing the Viscous Drive

Checking Belt Tensioner Spring Tension and Belt Wear (John Deere Engines)

Tensioning Water Pump Drive Belt - Cummins Engine

Tensioning Fan Drive Belt - Cummins Engine

Checking Rotary Radiator Screen

Rotary Screen Components

Adjusting the Screen

Drive for Rotary Radiator Screen

Section 40: Electrical System

Group 05: Connectors

Special or Essential Tools

Electrical Repair Tool Kit

Electrical Connector Handling

Disconnecting Electrical Circuit

Replacing Connectors

Insulated and Non-Insulated Connectors

Replacing Small MATE-N-LOC MATE-N-LOK is a trademark of the AMP company. Contacts In Connector Housings

Replacing SURE-SEAL SURE-SEAL is a trademark of ITT Cannon Electric. Connector Bodies

Replacing MATE-N-LOC MATE-N-LOC is a trademark of AMP Inc. and CPC CPC is a trademark of AMP Inc. Pin and Socket Contacts

Replacing DEUTSCH DEUTSCH is a trademark of Deutsch Co. Connectors

Install DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Contact

Replace WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Connector

WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Male and Female Connectors

Replacing METRI-PACK METRI-PACK is a trademark of the Packard Electric Co. Connectors

Replacing Schlemmer Schlemmer is a trademark of Josef Schlemmer GmbH. Connectors

Group 10: Electrical System Components

Electronic System Boards

Fuse Board - Fuses

Fuse Board - Relays

Relay and Diode Board

Engine Oil Pressure Sending Unit B1

Coolant Temperature Sending Unit B2

Reverser Motor Pressure Switch B4

Hydrostatic Oil Temperature Sending Unit B6

Hydraulic Oil Filter Sending Unit B7

Hydrostatic Charge Pressure Sending Unit B8

Air Cleaner Sending Unit B9

Cutterhead Speed Sending Unit B10

Ground Speed Sending Unit B12

Engine Speed Sending Unit B13

Air Conditioning System Temperature Switch B16

Air Conditioning System Low Pressure Switch B17

Air Conditioning System High Pressure Switch B18

Thermostat B19

Main Clutch Pressure Switch B23

Transmission Oil Temperature Sending Unit B25

Sound Sending Units B26 and B27

Fuel Tank Sending Unit B28

Rotary Radiator Screen Drive Motor M2

Cab Fan M3

Front Windshield Wiper Motor M4

Spout Flap Motor M6

Sharpening Stone Lowering Motor M9

Knife Sharpening Motor M10

Adjusting End Position Stop of Motor (M10)

Counterknife and Kernel Processor Adjusting Motors M11, M12, M13, M14

R.H. and L.H. Side Windshield Wiper Motors M15 and M16

Potentiometers R23 and R24

Calibrating Potentiometers R23 and R24

Sending Units for Electronic Control Unit (ECU) (6750, 6850)

Sending Units for Electronic Control Unit (ECU) (6950)

Replacing Knock Sensor

Section 50: Power Train

Group 05: Replacing Main Drive Belt

Replacing Main Drive Belt

Idler Roll With Support, Exploded View

Deflector Roll, Exploded View

Adjusting Belt Alignment

Group 10: Angled Drive

Special or Essential Tools

Specifications

Remove Angled Drive

Remove Disk Clutch

Clutch Assembly

Assembling Disk Clutch

Hub Components

Checking Main Clutch

Group 15: Transmission and Differential

Other Material

Specifications

Drain Oil, Remove Suction Screen

Remove Transmission

Remove and Repair Shifter Forks and Shifter Cam

Install Shifter Forks

Install Front Cover With Shifter Cam

Remove and Install Transmission Lube Pump

Transmission Components

Transmission Recondition

Disassemble and Repair Transmission

Remove Pinion Shaft

Remove Differential

Disassemble Differential

Assemble Differential

Assemble Transmission

Install Transmission

Group 20: Final Drives

Special or Essential Tools

Service Equipment and Tools

Other Material

Specifications

Remove Final Drive

Disassemble and Assemble Final Drive

Adjust Spindle Bearing (Preferred Method)

Adjust Spindle Bearing (Alternate Method)

Attach Final Drive

Final Drive Attaching Screws

Group 25: Hydrostatic Drive, Variable Pump

Special Tool

Special Tools (Self-Manufactured)

Specifications

Remove Variable Pump

Disassemble Variable Pump- Preparations

Remove Servo Control Valve

Remove Charge Pump

Remove Check Valve

Remove End Cap

Remove Bearing

Remove Servo Cylinders

Remove Front Cover

Remove Servo Piston

Remove Swashplate

Disassemble Swashplate

Swashplate, Exploded View

Repair Variable Pump

Checking Parts for Wear

Assemble and Install Swashplate

Check Rolling Drag Torque of Swashplate Bearings

Install Servo Piston

Install Servo Cylinder

Attach Front Cover

Check Drive Shaft Bearing End Play

Install End Cap

Install Check Valves

Install Charge Pump

Install Servo Control Valve

Install Seal Set

Install Variable Pump

Fill Variable Pump With Oil

Group 30: Hydrostatic Drive, Fixed-Displacement Motor

Special Tool

Special Tool, Self-Manufactured (Hardwood Mounting Plate)

Special Tool, Self-Manufactured (Puller)

Specifications

Remove Fixed Displacement Motor

Disassemble Fixed Displacement Motor- Preparations

Remove Valve Block

Valve Block, Exploded View

Assemble Valve Block

Remove End Cap

Remove Bearing

Remove Swashplate

Disassemble Swashplate Parts

Swashplate Assembly, Exploded View

Repair Fixed Displacement Motor

Assemble Fixed Displacement Motor

Checking Parts for Wear

Check Drive Shaft Axial Play

Install Fixed Displacement Motor

Group 35: Hydrostatic Drive, Oil Change

Specifications

Draining Oil

Refilling Hydrostatic Drive

Group 40: Cam Lobe Motor

Removing Cam Lobe Motor

Repairing the Cam Lobe Motor

Installing the Cam Lobe Motor

Section 60: Brakes, Steering, Rear Axle

Group 05: Brake Operating Assembly

Removing Brake Master Cylinder

Repairing Brake Master Cylinder

Installing Brake Master Cylinder

Adjusting Yoke at Brake Master Cylinder

Repairing Pressure Equalizing Valve

Removing Brake Operating Cylinder

Repairing Brake Operating Cylinder

Bleeding Brake System

Group 10: Brakes

Removing Brake Drum

Removing Brake Shoe

Repair Brakes

Assembling Brakes

Group 15: Hydrostatic Steering

Special Or Essential Tools

Specifications

Preliminary Work

Steering Hydraulics

Steering Column Components

Removing the Steering Valve

Steering Valve Components

Disassembling the Steering Unit

Removing Safety Valves

Removing Check Valve

Removing Spool and Sleeve

Disassembling the Spool Assembly

Removing Leaf Springs

Removing Seal Ring

Removing the Safety Valves

Removing Pressure-Control Valve

Repairing the Steering Unit

Assembling the Steering Unit

Installing Pressure-Control Valve

Installing Safety Valves

Arranging the Leaf Springs

Installing the Leaf Springs

Assembling the Spool Assembly

Installing Retaining Ring and Cross Pin

Assembling the Thrust Bearing

Installing the Seal Ring

Installing O-Ring and Back-Up Ring

Installing Spool Assembly

Installing the Check Valve

Installing Safety Valves

Installing the O-Ring

Installing Distributor Plate and Drive Shaft

Installing Rotor and Stator

Installing Spacer Ring

Installing Metering Unit Cover

Testing the Safety Valves

Adjusting the Safety Valves

Testing the Pressure-Control Valve

Adjusting the Pressure-Control Valve

Bleeding the Hydrostatic Steering System

Removing the Hydraulic Steering Pump

Hydraulic Pump - Exploded View

Oil Circuit, Steering Hydraulics

Hydraulic Lines to Steering Cylinders

Removing the Steering Cylinders

Dismantling the Steering Cylinders

Steering Cylinder With Ball Joints

Adjusting Steering Angle at Steering Cylinder

Tie Rod - Exploded View

Adjusting Toe-In

Checking Rear Wheel Toe-In

Group 16: ROW-TRAK ROW-TRAK is a trademark of Deere & Company. System

ROW-TRAK ROW-TRAK is a trademark of Deere & Company. System Components

Feelers on Header

Hydraulic Valve Block

Control Unit For ROW-TRAK ROW-TRAK is a trademark of Deere & Company.

Seat Switch

Control Board

Linear Potentiometer and Steering Cylinder

Checking and Adjusting the Linear Potentiometer

Requirements For ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Operation

The ROW-TRAK ROW-TRAK is a trademark of Deere & Company. System is Switched Off Automatically:

Putting ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Into Operation

Correcting the ROW-TRAK ROW-TRAK is a trademark of Deere & Company.

Taking ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Out of Operation

Group 20: Rear Axle

Standard Rear Axle - Exploded View

Adjustable Axle - Exploded View

Removing the Rear Axle

Installing the Rear Axle

Wheel Hub - Exploded View

Adjusting Rear Axle Width

Steering Cylinder Retaining Screws on Wheel Motors

Retaining Screws on Wheel Motor Yokes at Sliding Sleeve of Rear Axle

Rear Wheel Tread

Section 70: Hydraulic System

Group 05: Accumulators

Avoid High-Pressure Fluids

Special or Essential Tools

Specifications

Header Float System Accumulator

Header Float System Accumulators

Header Float System from Serial No. 501438

Checking Float System Accumulator Pressure

Recharging 3500 kPa (35 bar; 510 psi) Accumulator

Lowering Accumulator Pressure

Main Clutch Accumulator

Group 10: Triple Hydraulic Pump

General Repair Information

Removing Hydraulic Pump

Repair Information

Marking Hydraulic Pump

Disassembling Hydraulic Pump

Replace Shaft Seal

Installing Gasket and Support

Triple Hydraulic Pump, Exploded View

Assembling Hydraulic Pump

Draining Hydraulic Oil

Temperature And Pressure Sending Units At Hydraulic Oil Tank

Refilling Hydraulic Oil

Group 15: Electromagnetic Control Valve

Avoid High-Pressure Fluids

General Repair Information

Solenoids - Left-Hand Side

Solenoids - Right-Hand Side

Remove Left-Hand Solenoid Valve Block

Remove Right-Hand Solenoid Valve Block

Repair Pressure Valve

Repair 3/3 Directional Control Valve Plate

Repair Rate-of-Drop Plate

Repair Reverser Solenoid Valve Plate

Solenoid Valve Plate for Turning Discharge Spout

Solenoid Valve Plate for Raising/Lowering Discharge Spout

Solenoid Valve Plate for Engaging/Disengaging Main Clutch

Repair Pressure Reduction Unit

Group 20: Reverser Motor

Removing Reverser Motor

Disassembling Reverser Motor

Repairing Reverser Motor

Group 25: Hydraulic Motor - Discharge Spout

Specifications

Removing Hydraulic Motor

Disassembling Hydraulic Motor

Hydraulic Motor, Exploded View

Repairing Hydraulic Motor

Assembling Hydraulic Motor

Section 80: Miscellaneous

Group 05: Fuel Tank Hood

Remove Fuel Tank Hood

Section 90: Operator's Cab, Air Conditioning System

Group 05: Control Levers

Multi-Function Lever

Adjusting Multi-Function Lever

Group 10: Cab Ventilation

Air Intake and Distribution

Adjustable Air Louvers

Group 15: Replacing Cab Windows

Special or Essential Tools

Replacing Windshield

Removing Windshield

Installing Windshield

Replacing Windshield

Installing Windshield

Windshield, Sectional View

Left-Hand Window Assembly

Right-Hand Window Assembly

Installing Rear Window

Group 20: R134a Air Conditioning System

General Information

Special or Essential Tools

Specifications

Safety at Work

Handling Refrigerant

In An Emergency

Safety Equipment

Storage of Refrigerant Containers

R134a Refrigerant

Test and Service Ports

Connecting Service Unit

Discharging the System

Evacuating the System

Filling the System

Topping Up a Partly Discharged System

Filling With Refrigerant Oil FKM10446

Oil Capacities of Air Conditioning Components

Leak Test

Compressor Removal - Preparations

Removing Compressor

Check Compressor Charge

Disassembling the Compressor Clutch

Checking Clutch Hub Clearance

Checking the Compressor Manifold

Installing The Compressor

Removing and Installing the Condenser

Removing and Installing the Receiver-Drier

Removing and Installing the Evaporator and Expansion Valve

Removing and Installing the Thermostat Switch

Removing and Installing the High/Low Pressure Switch

Group 25: Super Comfort Seat

Super Comfort Seat DS85H1-02, Exploded View - Lower Section

Remove Seat and Air Suspension

Air Comfort Seat MSG95A-00, Lower Section

Section 100: Harvesting Units

Group 05: Harvesting Unit Cross Drive

Harvesting Unit Cross Drive

Harvesting Unit Drive, Exploded View

Drive Assembly

Group 10: Harvesting Units

2.14 M (7 Ft) and 3 M (10 Ft) Pickups

Attaching Frame for 2.14 M (7 Ft) Pickup

3-Row Row-Crop Unit

Attaching Frame for 3-Row Row Crop

Adapter Frame for 2.14 M (7 Ft) Pickup and 3-Row Row Crop

4-Row Row-Crop Unit

5-Row and 6-Row Row-Crop Units

676 Rotary Harvesting Unit (Row-Independent)

688 Rotary Harvesting Unit (Row-Independent)

Corn Heads

Section 110: Feeding System

Group 05: Length-of-Cut Transmission

Specifications

Other Material

General Information

Removing Length-of-Cut Transmission

Disassembling Length-of-Cut Transmission

Location of Shaft Assemblies

Shaft Assembly (AZ)

Shaft Assembly (BZ)

Shaft Assembly (CZ)

Shaft Assembly (DZ)

Shaft Assembly (EZ)

Shaft Assembly (FZ)

Shaft Assembly (GZ)

Shaft Assembly (HZ)

Assembling Length-of-Cut Transmission

Chain Drive, Exploded View

Installing Length-of-Cut Transmission

Group 10: Reverser Clutch

Reverser Clutch, Exploded View

Reverser Clutch Assembly

Installing Reverser Motor With Clutch

Group 15: Electric Clutch

Specifications

Other Material

Electric Clutch Components

Assembling Electric Clutch

Adjusting Clearance

Group 20: Feed Roll Channel

Opening Feed Roll Housing

Closing Feed Roll Housing

Feed Roll Housing Safety Switch

Group 25: Feed Roll Assembly

Disassemble Feed Roll Assembly

Gear Transmission, Exploded View

Remove Smooth Roll

Repair Front Upper Feed Roll

Repair Rear Upper Feed Roll

Repair Front Lower Feed Roll

Repair Rear Lower Feed Roll

Install Smooth Roll

Assemble Feed Roll Assembly

Lateral Guides for Upper Feed Rolls

Group 30: Locking Pawl

Adjusting Locking Pawl

Checking Adjustment

Metal Detector Test

Test Chart 1

Test Chart 2

Test Chart 3

Safety Rules

Section 120: Cutterhead Assembly

Group 05: Knife Sharpening Device

Removing Knife Sharpening Device

Worm Gear

Cable Guide, Sharpening Stone Horizontal Movement

Folding Sharpening Device

Replacing Sharpening Stone

Group 10: Cutterhead

Special or Essential Tools

Specifications

Removing Cutterhead

Replacing Cutterhead and Knife Attaching Parts

Knife Screw Torque

Installing R.H. Side Cutterhead Bearing

Installing L.H. Side Cutterhead Bearing

Installing R.H. Side Cutterhead Bearing

Installing Cutterhead

Installing Belt Pulley

Group 15: Bottom and Outlet Bands

Cutterhead Bottom and Outlet Bands

Adjusting Bottom Band

Adjusting Outlet Band

Recirculating Screens

Installing/Changing Recirculating Screen

Adjusting Recirculating Screen

Removing Bottom and Outlet Bands

Installing Spiral Floor

Adjustable Spiral Floor - Adjustment

Adjustment With Kernel Processor Installed

Group 20: Removing and Installing Stationary Knife

Specifications

Removing Stationary Knife

Removing Stationary Knife Adjusting Device

Installing Stationary Knife

Eliminating End Play of Adjusting Spindle

Group 25: Kernel Processor

Specifications

Lubricants

Removing Kernel Processor

Kernel Processor Drive, Exploded View

Kernel Processor Housing, Exploded View

Removing Grooved Rolls

Upper Grooved Roll, Exploded View

Lower (Stationary) Grooved Roll, Exploded View

Installing Grooved Roll

Grooved Roll Adjusting Device, Exploded View

Manual Adjustment of Grooved Roll Clearance

Automatic Adjustment of Grooved Rolls

Electrical Adjusting Device, Exploded View

Adjusting Scrapers

Replacing Drive Belts of Lower Roll

Pretension of Lower Roll Drive Belt

Idler and Deflector Pulleys, Exploded View

Repairing Idler Pulley

Removing Idler Pulley

Replacing Bearing Set

Installing Bearing Set

Group 30: Power Chute

Installing Power Chute

Preparing Power Chute

Attaching Power Chute To Hoist

Attaching Power Chute

Drive Belts

Power Chute - Service and Operation

Power Chute Main Drive Lock

Tensioning Rear Paddle Drive Belt

Locking Bar - Power Chute Out of Operation

Section 130: Discharge Components

Group 05: Discharge Fan

Special or Essential Tools

Special Tool (Self-Manufactured)

Discharge Blower Components

Replacing Wear Plate

Adjusting Blower Paddles

Adjusting Deflecting Edges

Group 10: Blower Rotor and Rotor Bearings

Blower Rotor, Installed

Blower Rotor Bearings and Supports

Components of Self-Aligning Roller Bearing, Right-Hand

Components of Self-Aligning Roller Bearing, Left-Hand

Group 15: Discharge Spout

Spout Turning Device

Spout Worm Gear and Ring Gear

Spout With Wear Plates

Service Opening and Wear Plates at Spout

Spout Flap Adjusting Motor

Section 210: General Information

Group 05: Specifications

6650, 6750, 6850 and 6950 Forage Harvesters

Group 10: Drive Diagrams

Drive Diagram, 6650 to 6950 With Kernel Processor

Drive Diagram, 6650 to 6950 With Power Chute

Group 15: Ballast Charts

Rear Weights for Forage Harvester With Harvesting Unit Installed

Group 20: Tread Widths

Total Widths and Tread Widths With Adjustable Rear Axle

Section 220: Engine

Group 05: Engine Specifications

Engine Data

Explanation of Engine Designations

6650 Forage Harvester

6750 Forage Harvester

6850 Forage Harvester

6950 Forage Harvester

Emissions According to ECE-R24

Group 10: Engine Tests

Preliminary Engine Tests

Dynamometer Test

Determining Engine Horsepower

Connecting Dynamometer

Brake Horsepower Specifications

Section 230: Fuel, Air Intake and Cooling Systems

Group 05: Fuel, Air Intake and Cooling Systems

Fuel System - 8.1 L John Deere Engine

Fuel System - 12.5 L John Deere Engine

Fuel System - Cummins Engine

Air Intake System of 6650 to 6950 Forage Harvesters

Rotary Radiator Screen

Cooling Elements, 6650 to 6850

Cooling Elements, 6950

Engine Cooling System, 6950

Viscous Fan Drive of 6650-6950 Forage Harvesters

Section 240: Electrical System

Group 05: General Information

Electrical Circuit Malfunctions

Open Circuit

Grounded Circuit

Shorted Circuit

How to Read a Functional Schematic

How to Read a Wiring and Harness Diagram

Symbols in System Diagrams

Symbols in System Diagrams

Symbols in System Diagrams

Symbols in System Diagrams

Group 06: Test Equipment

Special or Essential Tools

Multimeter

Wiring Harness Tester

Use of Wiring Harness Tester

Group 10: Electrical System Diagrams

Section Survey

Wiring Harness Survey

Component Survey

Functional Schematic, Sections 1 and 2

Functional Schematic, Section 3D

Functional Schematic, Section 3E

Functional Schematic, Section 3F

Functional Schematic, Section 4

Functional Schematic, Section 5

Functional Schematic, Section 6 - Part 1

Functional Schematic, Section 6 - Part 2

Functional Schematic, Sections 7 and 8

Functional Schematic, Sections 10, 11 and 12A

Functional Schematic, Sections 12B and 13

Functional Schematic, Section 14

Functional Schematic, Section 15

Functional Schematic, Sections 16 and 17

Functional Schematic, Section 18

Functional Schematic, Sections 19 and 20

Functional Schematic, Sections 21A, 21B and 22

Functional Schematic, Section 23

Functional Schematic, Section 24

Functional Schematic, Sections 25, 26 and 27

Functional Schematic, Section 28

Functional Schematic, Section 29 - Part 1

Functional Schematic, Section 29 - Part 2

Functional Schematic, Section 29 - Part 3

Functional Schematic, Section 30

Functional Schematic, Sections 31 and 32

Functional Schematic, Section 33 - Part 1

Functional Schematic, Section 33 - Part 2

Functional Schematic, Section 34

Wiring and Harness Diagram of Platform Wiring Harness W1 and Steering Column Wiring Harness W2

Location of Platform Wiring Harness W1 and Steering Column Wiring Harness W2 with Components

Wiring and Harness Diagram of Cutterhead Wiring Harness W3

Location of Cutterhead Wiring Harness W3 With Components

Wiring and Harness Diagram of Brake Wiring Harness W39 (676 Rotary Harvesting Unit)

676 Rotary Harvesting Unit (Option, USA Only)

Wiring and Harness Diagram of R.H. Basic Wiring Harness W7

Location of R.H. Basic Wiring Harness W7 With Components

Wiring and Harness Diagram of L.H. Basic Wiring Harness W9

Location of L.H. Basic Wiring Harness W9 With Components

Wiring and Harness Diagram of Center Basic Wiring Harness W12

Location of Center Basic Wiring Harness W12 With Components

Wiring and Harness Diagram of Engine Wiring Harness W8 (8.1 Liter John Deere Engine)

Location of Engine Wiring Harness W8 With Components (8.1 Liter John Deere Engine)

Wiring and Harness Diagram of Engine Wiring Harness W14 (12.5 Liter John Deere Engine)

Location of Engine Wiring Harness W14 With Components (12.5 Liter John Deere Engine)

Wiring and Harness Diagram of Engine Wiring Harness W48 (14 Liter Cummins Engine)

Location of Engine Wiring Harness W48 With Components (14 Liter Cummins Engine)

Wiring and Harness Diagram of Main Electronic System Wiring Harness W20 (Part 1)

Wiring and Harness Diagram of Main Electronic System Wiring Harness W20 (Part 2)

Location Of Main Electronic System Wiring Harness W20 With Components

Wiring and Harness Diagram of Cab Wiring Harness W25 (Part 1)

Wiring and Harness Diagram of Cab Wiring Harness W25 (Part 2)

Wiring and Harness Diagram of Cab Wiring Harness W25 (Part 3)

Wiring and Harness Diagram of Cab Wiring Harness W25 (Part 4)

Location of Cab Wiring Harness W25 With Components

Wiring and Harness Diagram of Cab Wiring Harness W25, Air Conditioning Wiring Harness W26 and Armrest Wiring Harness W27

Wiring and Harness Diagram of Socket Wiring Harness W43 (Option)

Location of Cab Wiring Harness W25, Air Conditioning Wiring Harness W26 and Armrest Wiring Harness W27 With Components

Wiring and Harness Diagram of Switch Console Wiring Harness W28

Location of Switch Console Wiring Harness W28 With Components

Wiring and Harness Diagram of Kernel Processor Wiring Harness W29

Location of Kernel Processor Wiring Harness W29 With Components

Wiring and Harness Diagram of Corner Post Wiring Harness W30

Location of Corner Post Wiring Harness W30 With Components

Wiring and Harness Diagram of Discharge Spout Wiring Harness W34

Location of Discharge Spout Wiring Harness W34 With Components

Wiring and Harness Diagram of Fuse Board A11

Location of Components on Fuse Board A11

Location of Components on Relay/Diode Board A14

Group 15A: Batteries, Starting Motor, Alternator

Specifications

Operational Information

Theory of Operation

Functional Schematic of Section 1

Diagnostic Schematic of Section 1

Group 15B: Safety Switches, Basic Relays

Operational Information

Theory of Operation

Functional Schematic of Section 2

Diagnostic Schematic of Section 2

Group 15C: Engine Shut-Off Device

Operational Information

Theory of Operation - John Deere 8.1 Liter Engine (Focus ECU)

Theory of Operation - Cummins 14.0 Liter Engine (Cummins ECU)

Theory of Operation - John Deere 12.5 Liter Engine (Lucas ECU)

Functional Schematic of Sections 3D, 3E and 3F

Functional Schematic of Section 3D (Lucas ECU)

Diagnostic Schematic of Section 3D

Functional Schematic of Section 3E (Cummins ECU)

Diagnostic Schematic of Section 3E

Functional Schematic of Section 3F (Focus ECU)

Diagnostic Schematic of Section 3F

Group 15D: Instruments

Operational Information

Theory of Operation

Functional Schematic of Section 4

Diagnostic Schematic of Section 4

Group 15E: Electronic INFO-TRAK INFO-TRAK is a trademark of Deere & Company. Monitor

Operational Information

Input of Specific Machine Data

Software Version

Machine Code

Transmission Speed Ratio Code

Tire Radius Code

Specifications

Determining Tire Radius

Engine Impulse Code

Functional Schematic of Section 5

Diagnostic Schematic of Section 5

Fault Codes

Diagnostic Codes for Electronic Control Unit (ECU) (8.1 L Engine) - General

Diagnostic Code List - Electronic Control Unit (ECU), 8.1 L Engine

Self-Test of Engine Electronic System (6950 Only)

Error Codes - Cummins Engine

Group 15H: Turning Discharge Spout

Operational Information

Theory of Operation

Functional Schematic of Section 7

Diagnostic Schematic of Section 7

Group 15I: Raising/Lowering Discharge Spout

Operational Information

Theory of Operation

Functional Schematic of Section 8

Diagnostic Schematic of Section 8

Group 15L: Reel Fore-and-Aft Adjustment

Operational Information

Theory of Operation

Functional Schematic of Section 10

Diagnostic Schematic of Section 10

Group 15M: Raising Reel

Operational Information

Theory of Operation

Functional Schematic of Section 11

Diagnostic Schematic of Section 11

Group 15N: Reel Speed Adjustment

Operational Information

Theory of Operation

Functional Schematic of Section 12A

Diagnostic Schematic of Section 12A

Group 15O: 676 Rotary Harvesting Unit (North America)

Operational Information

Functional Schematic of Section 12B

Diagnostic Schematic of Section 12B

Group 15P: Attaching Trailer

Operational Information

Theory of Operation

Functional Schematic of Section 13

Diagnostic Schematic Of Section 13

Group 15Q: Raising/Lowering Harvesting Unit

Operational Information

Theory of Operation

Functional Schematic of Section 14

Diagnostic Schematic of Section 14

Group 15R: Pressure Valves, Trailer Dump

Operational Information

Theory of Operation

Functional Schematic of Section 15

Diagnostic Schematic of Section 15

Group 15S: Main Clutch, Reverser

Operational Information

Theory of Operation

Functional Schematic of Section 16

Diagnostic Schematic of Section 16

Group 15T: Four-Wheel Drive

Operational Information

Theory of Operation

Functional Schematic of Section 17

Diagnostic Schematic of Section 17

Group 15U: Lighting System

Operational Information

Theory of Operation

Functional Schematic of Section 18

Diagnostic Schematic of Section 18

Group 15V: Work Lights

Operational Information

Theory of Operation

Functional Schematic of Section 19

Diagnostic Schematic of Section 19

Group 15W: Stop Lights, Horn

Operational Information

Theory of Operation

Functional Schematic of Section 20

Diagnostic Schematic of Section 20

Group 15X: Beacon Lights

Operational Information

Theory of Operation

Functional Schematic of Section 21

Diagnostic Schematic of Section 21

Group 15Y: Fan, Air Conditioning System

Operational Information

Theory of Operation

Functional Schematic of Section 22

Diagnostic Schematic of Section 22

Group 15Z: Windshield Wiper/Washer System

Operational Information

Theory of Operation

Functional Schematic of Section 23

Diagnostic Schematic of Section 23

Group 15AA: Radio, Interior Lighting

Operational Information

Theory of Operation

Functional Schematic of Section 24

Diagnostic Schematic of Section 24

Group 15AB: Rotary Radiator Screen, Reverse Travel Alarm

Operational Information

Theory of Operation

Functional Schematic of Section 25

Diagnostic Schematic of Section 25

Group 15AC: Cigarette Lighter, Seat Compressor

Operational Information

Functional Schematic of Section 26

Diagnostic Schematic of Section 26

Group 15AD: Spout Rinsing System

Operational Information

Theory of Operation

Functional Schematic of Section 27

Diagnostic Schematic of Section 27

Group 15AE: Discharge Spout Flap Adjustment

Operational Information

Theory of Operation

Functional Schematic of Section 28

Diagnostic Schematic of Section 28

Group 15AF: Main Electronic System

Operational Information

Theory of Operation

Main Electronic System (A12) Signals

Functional Schematic Of Section 29 - Part 1

Diagnostic Schematic of Section 29 - Part A

Functional Schematic of Section 29 - Part 2

Diagnostic Schematic of Section 29 - Part B

Functional Schematic of Section 29 - Part 3

Group 15AG: Metal Detector

Operational Information

Theory of Operation

Metal Detector Relay Box (A7) Signals

Functional Schematic of Section 30

Diagnostic Schematic of Section 30

Group 15AH: Electronic Control Unit

Operational Information

Control Unit (A13) Signals

Functional Schematic of Section 31

Diagnostic Schematic of Section 31

Group 15AJ: ROW-TRAK ROW-TRAK is a trademark of Deere & Company. System

Operational Information

Theory of Operation

Functional Schematic of Section 32

Diagnostic Schematic of Section 32

Group 15AK: POWR-SAVR POWR-SAVR is a trademark of Deere & Company.

Operational Information

Theory of Operation

POWR-SAVR POWR-SAVR is a trademark of Deere & Company. Control Board (A10A) Signals

Functional Schematic of Section 33 - Part 1

Functional Schematic of Section 33 - Part 2

Diagnostic Schematic of Section 33

Group 15AL: 676 Rotary Harvesting Unit (North America)

Blade Rotor Brake

Functional Schematic of Section 34

Diagnostic Schematic of Section 34

Section 250: Power Train

Group 05: Angled Drive

Cutterhead Drive

Angled Drive, Power Distribution

Angled Drive Components

Main Clutch

Hydrostatic and Mechanical Drive System

Group 10: Hydrostatic Drive

Specifications

Hydrostatic Drive Power Train

Hydrostatic Drive - Operation

Hydrostatic System Circuit Diagram

Hydrostatic Drive Operation, Neutral Position

Hydrostatic Drive Operation, Neutral Position

Hydrostatic Drive Operation, Forward Travel

Hydrostatic Drive Operation, Forward Travel With Four-Wheel Drive

Hydrostatic Drive Operation, Forward Travel With Four-Wheel Drive

Hydrostatic Drive Operation, Reverse Travel

Hydrostatic Drive Operation, Overload Conditions

Hydrostatic Drive Operation, Overload Conditions

Four-Wheel Drive Solenoid Valve, Disengaged Position

Four-Wheel Drive Solenoid Valve, Engaged Position

Four-Wheel Drive Flow Control Valves

Group 15: Three-Speed Transmission

Three-Speed Transmission - Operation

Lubrication of Three-Speed Transmission

Group 20: Testing Hydrostatic System

Special Or Essential Tools

Testing Hydrostatic System

Testing High Pressure Relief Valves

Test Port Connections

Hydrostatic Motor Test Connector

Specifications

Testing Hydrostatic System

Checking Charge and Flushing Pressure

Checking High Pressure Relief Valves - Preparations

Checking High Pressure Relief Valve for Forward Travel

Checking High Pressure Relief Valve for Reverse Travel

Overload Relief Valve

Section 260: Brakes, Steering, Rear Axle

Group 05: Brake Operating System

Brake Operation

Brake Master Cylinder - Operation

Pressure Equalizing Valve

Group 10: Drum Brakes

Drum Brake Components

Group 15: ROW-TRAK ROW-TRAK is a trademark of Deere & Company. System

Steering System Components

ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Function

Description of ROW-TRAK ROW-TRAK is a trademark of Deere & Company.

Group 20: ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Steering Function

ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Steering System Circuit Plan

ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Hydraulic Steering Function - Description

Group 25: ROW-TRAK ROW-TRAK is a trademark of Deere & Company. Calibration

Calibration of Potentiometer (A)

Selecting Calibration Mode

System Gain

Steering Ratio

Row Feeler Filtering

Calibrating the Medium Setting of the Potentiometer

Calibrating the Sensors on the Row Crop Header - General Information

Calibrating the Left-Hand Feeler on Row-Dependent Header

Calibrating the Right-Hand Feeler on Row-Dependent Header

Calibrating the Right-Hand Feeler on Row-Independent Header

Calibrating the Left-Hand Feeler on Row-Independent Header

Calibrating the Medium Setting of the Linear Potentiometers

Alternative Method for Calibrating the Medium Setting of the Linear Potentiometers (Driving the Machine Not Required)

Calibrating the Hydraulic Valve - Magnetization

Bleeding Air From the ROW-TRAK ROW-TRAK is a trademark of Deere & Company. 's Hydraulic System

Changing Header or Other Components

Calibrating the Feelers on the Header - General Information

Error Codes

Section 270: Hydraulic System

Group 05: General Information

Description

Hydraulic Symbols (As Defined by ISO 1219)

Hydraulic Symbols (As Defined by ISO 1219)

Hydraulic System Circuit Diagram

Group 10: Electromagnetic Control Valve

Pressure Valve In Neutral Position

Pressure Valve in Working Position

Pressure Valve With Pressure Relief Valve

Reverser Solenoid Valve Plate in Neutral Position

Reverser Solenoid Valve Plate in Working Position

3/3 Directional Control Valve In Neutral Position

3/3 Directional Control Valve In Neutral Position - Operation

3/3 Directional Control Valve, Lower Harvesting Unit

3/3 Directional Control Valve, Raise Harvesting Unit

Rate-of-Drop Plate

Rate-of-Drop Plate - Operation

Main Clutch Solenoid Valve Plate In Neutral Position

Main Clutch Solenoid Valve Plate In Working Position

Pressure Reduction Valve

4/3 Directional Control Valve Plate in Neutral Position

4/3 Directional Control Valve Plate in Working Position

4/3 Directional Control Valve Plate With Check Valves in Neutral Position

4/3 Directional Control Valve Plate With Check Valves In Working Position

Group 15: Testing Hydraulic System

Special or Essential Tools

Specifications

Hydraulic Components - Neutral Oil Flow

Hydraulic Components - Raising Harvesting Unit, Float, Main Clutch

Hydraulic Components - Reverser Motor, Raising, Lowering and Rotating Spout

Checking Pressure Valve

Checking Pressure Reduction Unit

Group 20: Header Float System

Checking Pressure Switch

Header Float System

Section 290: Operator's Cab

Group 05: Operator's Cab

Operator's Cab

Operator's Seat and Passenger Seat

Air Comfort Seat

Air Conditioning System Components

Heater Components

Compressor With Drive

Air Conditioning and Heater Unit

Air Conditioning Housing

Air Conditioning Housing (Left-Hand Side)

Air Conditioning Housing (Right-Hand Side)

Air Conditioning Housing (Hose Connections)

Temperature Control Switch With Sensor

Air Conditioning Housing In Open Position

Evaporator With Expansion Valve

Air Control Flap

Cab Rear Wall

Heater Control Valve and Air Conditioning System Low Pressure Switch

Cab Air Filter

Group 10: System Diagnosis - Air Conditioning System

R134a Refrigerant

R134a Refrigerant

Safety at Work

Handling Refrigerant

In An Emergency

Safety Equipment

Storage of Refrigerant Containers

Special or Essential Tools

Specifications

Troubleshooting

Troubleshooting

Explanation of Checks

Pressure Deviations

Pressure Deviations

Group 15: Operation - Air Conditioning System

Principle of Heat Exchange

Layout of Refrigerant Circuit

Description of Refrigerant Circuit Function

Compressor

Condenser

Receiver-Drier

Expansion Valve

Thermostat Switch

Evaporator

Temperature Control Switch and Compressor Switch

De-Icer Switch

Group 20: Operator's Seat - System Diagnosis

Diagnosis, MSG95 Operator's Seat

Fault 1

Fault 2

Fault 3

Fault 4

Fault 5

Fault 6

John Deere Self-Propelled Forage Harvesters Models 6650, 6750, 6850, 6950 (S.N.-503680) Diagnosis & Tests Service Manual (TM4549)