John Deere 6620 Side hill 7720 8820 Service Repair Manual

John Deere 6620 8820 Service Manual

(TM1202)

For complete service information also see:

JD 7720, 7820 and 7920 Parts Catalog 

This John Deere manual contains high-quality images, instructions to help you to troubleshoot, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, cross-links for easy navigation.

This is a repair only manual, Diagnostic Manual with electrical wiring diagrams are sold separately.

Models Covered:

John Deere, 6620 Combine
John Deere Side hill 6620 Combine
John Deere Side hill 7720 Combine
John Deere Side hill 8820 Combine

Service Technical Manual Covers:

SECTION 10 – GENERAL

Group 00 – General Specifications
Group 05 – Diagnosing and Testing Procedures
Group 10 – Tune-Up and Adjustment

SECTION 20 – ENGINE REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Cylinder Head, Valves and Camshaft
Group 10 – Block, Liners, Pistons, and Rods
Group 15 – Crankshaft and Main Bearings
Group 20 – Lubrication System
Group 25 – Cooling System

SECTION 30 – FUEL AND AIR REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Air Intake System
Group 10 – Diesel Fuel System
Group 15 – Control Linkage

SECTION 40 – ELECTRICAL REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Harness Replacement
Group 10 – Charging Circuit Repair
Group 15 – Starting Circuit Repair
Group 20 – Lights, Instruments, and Accessories

John Deere 6620 7720 Service Repair Manual Manual

SECTION 50 – POWER TRAIN REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Clutch
Group 10 – Transmission
Group 15 – Differential
Group 20 – Final Drive
Group 25 – Sundstrand Hydrostatic Drive
Group 26 – Eaton Hydrostatic Drive
Group 30 – 4-Wheel Drive (Planetary Gearing)
Group 31 – 4-Wheel Drive (Cam Lobe)
Group 35 – Posi-Torq Ground Drive
Group 40 – Tires and Wheels

SECTION 60 – STEERING / BRAKES REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Power Steering
Group 10 – Brakes

SECTION 70 – HYDRAULIC REPAIR

Group 00 – Specifications
Group 05 – Reservoir
Group 10 – Hydraulic Pump
Group 15 – Hydraulic Valves
Group 20 – Hydraulic Cylinders
Group 25 – Hydraulic Motors
Group 30 – Accumulator

SECTION 80 – SEPARATOR SHELL REPAIR

Group 00 – Specifications
Group 05 – Rear Hood
Group 10 – Cylinder Rear Cover
Group 15 – Separator Uprights

SECTION 90 – OPERATOR STATION REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Air Conditioning System
Group 10 – Air Intake (Pressurizer) System
Group 15 – Heating System
Group 20 – Personal Posture Seat
Group 25 – Miscellaneous Components

SECTION 100 – HEADER REPAIR

Group 00 – Specifications and Special Tools
Group 05 – 200 and 900 Series Cutting Platforms
Group 10 – 40 Series Corn Heads
Group 15 – 50, 50A Series Row-Crop Heads

SECTION 110 – FEEDER HOUSE REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Feeder Conveyor Chain
Group 10 – Feeder Conveyor Drum
Group 15 – Feeder House Drives and Reverser Gear Case
Group 20 – Feeder House Drives (Side Hill 6620 Combines) (-610300)
Group 25 – Feeder House Paddies, Stripper, and Front Closure Sheets (Side Hill 6620 Combines) (-403300)
Group 30 – Feeder Conveyor Chain, Upper Shaft, Paddle and Shaft, Conveyor Drum and Front Closure Sheets (Side Hill 6620 Combines) (403301-)

SECTION 120 – SEPARATOR REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Cylinder, Concave, and Beater
Group 10 – POST-TORQ Cylinder Drive
Group 12 – Dual-Range Cylinder Drive
Group 15 – Straw Walkers and Crankshafts
Group 20 – Straw Chopper and Straw Spreader
Group 25 – Shoe Augers, Fan, and Shoe Frame
Group 30 – Tailings Elevator and Augers
Group 35 – Lower Auger, Clean Grain Elevator, and Grain Tank Loading Auger

SECTION 130 – GRAIN TANK UNLOADING SYSTEM

Group 00 – Specifications
Group 05 – Grain Tank Cross Augers
Group 10 – Vertical Auger and Bevel Gears
Group 15 – Horizontal Auger and Gears

SECTION 140 – MAJOR DRIVES REPAIR

Group 00 – Specifications
Group 05 – Engine Powershaft
Group 10 – Primary Countershaft
Group 15 – Secondary Countershaft

SECTION 150 – SIDEHILL LEVELING SYSTEM REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Electrical Components
Group 10 – Hydraulic Components

SECTION 160 – AUTOMATIC HEADER HEIGHT CONTROL REPAIR

Group 00 – Specifications and Special Tools
Group 05 – Repair of Components

SECTION 220 – ENGINE OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 05 – System Operation
Group 10 – System Tests and Diagnosis

SECTION 230 – FUEL / AIR OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 05 – Air Intake System
Group 10 – Diesel Fuel System
Group 15 – Control Linkage

SECTION 240 – ELECTRICAL OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 05 – General Information and Diagnosis
Group 06 – Eletrical System Diagnosis
Group 10 – Charging Circuit
Group 15 – Starting Circuit
Group 20 – Lights, Instruments and Accessory Circuits

SECTION 250 – POWER TRAIN OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 05 – Clutch Diagnosis
Group 10 – Transmission Diagnosis
Group 15 – Final Drive Diagnosis
Group 20 – Hydrostatic Drive Tests and Diagnosis
Group 25 – 4-Wheel Drive Diagnosis (Planetary Gearing)
Group 26 – 4-Wheel Drive (Cam Lobe)
Group 30 – Posi-Torq Ground Drive Diagnosis

SECTION 260 – STEERING / BRAKES OPERATION AND TESTS

Group 05 – Power Steering
Group 10 – Brakes

SECTION 270 – HYDRAULIC OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 01 – Hydraulic System Operation
Group 05 – Hydraulic System Tests
Group 10 – Reservoir
Group 15 – Hydraulic Pumps
Group 20 – Hydraulic Valves
Group 25 – Hydraulic Cylinders
Group 30 – Hydraulic Motors
Group 35 – Accumulator

SECTION 290 – OPERATOR STATION OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 05 – Air Conditioning System
Group 10 – Heating System

SECTION 350 – SIDEHILL LEVELING SYSTEM OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 05 – General Information, Diagnosis, and Tests
Group 10 – Electrical System
Group 15 – Hydraulic System

SECTION 360 – AUTOMATIC HEADER HEIGHT CONTROL OPERATION AND TESTS

Group 00 – Specifications and Special Tools
Group 05 – General Information, Diagnosis, and Tests
Group 10 – Mechanical System
Group 15 – Electrical System
Group 20 – Hydraulic System
Group 25 – General Information, Diagnosis, and Tests
Group 30 – Mechanical System
Group 35 – Electrical System
Group 40 – Hydraulic System

And More……

John Deere 6620 Sidehill 6620 7720 8820 Service Repair Manual
John Deere 6620 Sidehill 6620 7720 8820 Service Repair Manual
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John Deere 6620 7720 Service Repair Manual