John Deere 7720 7820 7920 2WD MFWD Tractor Workshop Repair Service Manual (TM2080) - MJODTM2080.zip
A full factory-level repair and service technical manual covering the John Deere 7720, 7820, and 7920 Tractors, containing every piece of workshop data you need to keep up, fix, and overhaul these machines just like an experienced professional technician would.
This workshop technical service (repair) manual for the John Deere 7720, 7820, and 7920 Tractors, in both 2WD and MFWD configurations, contains:
* 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.
* 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.
tm2080 - 7720 7820 7920 Tractors Technical Manual.pdf
tm2080 - 7720 7820 7920 Tractors Technical Manual.epub
Total Pages: 1,710 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English
MAIN SECTIONS
Foreword
Notice to Dealers
Dealer Predelivery Information Form
General Information
Safety
General Information
General Specifications
Engine
Component Removal and Installation
Engine Repair
Fuel / Air Intake and Cooling Systems
Controls
Diesel Fuel System
Air Intake System
Engine Cooling System
Standard Cooler and Air Conditioning Condenser
Deluxe Cooler and Air Conditioning Condenser
Exhaust System
Electrical
Connectors
Wiring Harness Routings
Charging Circuit
Starting Circuit
Solenoids and Switches
Monitoring System
Armrest Control
Auxiliary Lighting and Electrical Components
Convenience and Accessory Components
PowrQuad-Plus Transmission
Component Removal and Installation
Transmission Shifting Mechanisms
PowrQuad-Plus Module
Range Box
AutoPowr/IVT Transmission
Component Removal
Controls
Front Pump/Control Valve Assembly
Transmission Front Housing
Hydrostatic Module
Shift Valve Assembly
Transmission Rear Housing
Differential Input Assembly
MFWD Drive Systems
Component Removal And Installation
Controls
MFWD Clutch
MFWD Axle
Suspended MFWD Axle Components
Drive Systems
Component Removal And Installation
Rear Differential
Final Drive
Rear PTO
Front PTO Repairs
Primary Brakes
Steering and Brakes
Steering Column
Hydrostatic Steering
Service Brakes
Trailer Brakes
Hydraulics
Component Removal and Installation
Hydraulic System Repair
Hydraulic Pump And Charge Pump
Hydraulic System Valves
Selective Control Valves and Couplers
Rear 3-Point Hitch
Front 3-Point Hitch
Bleed Hydraulic System
Miscellaneous
Hood
Front Axle (Two-Wheel Drive)
Steering Cylinders (Two-Wheel Drive)
Rear Wheels
Wagon And Pick-Up Hitch
Operator Station
Component Removal and Installation
Heating, Ventilating, and Air Conditioning (HVAC)
Air Conditioning System
Air Suspension Seat
ACTIVE SEAT™
Armrest
Cab Door and Windshield
Dealer Fabricated Tools
DFRW
tm2080 - 7720 7820 7920 Tractors
Table of Contents
Foreword
Notice to Dealers
Dealer Predelivery Information Form
Section 10: General Information
Group 05: Safety
Recognize Safety Information
Handle Fuel Safely—Avoid Fires
Prevent Battery Explosions
Prepare for Emergencies
Prevent Acid Burns
Handle Chemical Products Safely
Avoid High-Pressure Fluids
Park Machine Safely
Support Machine Properly
Wear Protective Clothing
Work in Clean Area
Service Machines Safely
Work In Ventilated Area
Illuminate Work Area Safely
Replace Safety Signs
Use Proper Lifting Equipment
Service Tires Safely
Avoid Harmful Asbestos Dust
Avoid Heating Near Pressurized Fluid Lines
Remove Paint Before Welding or Heating
Use Proper Tools
Construct Dealer-Made Tools Safely
Dispose of Waste Properly
Live With Safety
Service Accumulator Systems Safely
Wait Before Opening High-Pressure Fuel System
Group 10: General Information
Sealants and Adhesives Cross-Reference Chart
Identify Zinc-Flake Coated Fasteners
Unified Inch Bolt and Screw Torque Values
Metric Bolt and Screw Torque Values
Glossary of Terms
Group 15: General Specifications
Specifications (North America, Latin America, South Africa, and Asia)
Specifications (Europe)
Section 20: Engine
Group 00: Component Removal and Installation
Essential or Recommended Tools
Other Material
Specifications
Remove and Install 6.8L—Engine
Remove and Install 8.1L—Engine
Group 05: Engine Repair
Specifications
Repair Engine—Use CTM
Access to Front Crankshaft Seal
Access to Rear Crankshaft Seal
Access to Camshaft
Access to Timing Gear Cover
Access to Engine Oil Pan
Repair 6.8L Engine Accessory Drive Assembly
Remove and Install 6.8L Engine Valve Cover
Remove and Install 8.1L Engine Valve Cover
Section 30: Fuel / Air Intake and Cooling Systems
Group 05: Controls
Repair Engine—Use CTM
Group 10: Diesel Fuel System
Specifications
Remove and Install Fuel Tanks
Replace Fuel Filter, Fuel Pump, and Bleed Fuel System
Group 15: Air Intake System
Specifications
Inspect and Service Air Intake System
Group 20: Engine Cooling System
Essential or Recommended Tools
Specifications
Test Radiator and Coolant Tank Cap
Remove and Install Radiator/Aftercooler
Inspect Belt Tensioner
Remove and Install Viscous Fan Drive
Remove and Install Vistronic Fan Drive
Fan Belt Routing—7720 to 7920
Group 25: Standard Cooler and Air Conditioning Condenser
Essential or Recommended Tools
Specifications
Remove Fuel-Hydraulic Oil Cooler/Condenser
Leak Test Fuel-Hydraulic Oil Cooler
Install Fuel-Hydraulic Oil Cooler/Condenser
Group 30: Deluxe Cooler and Air Conditioning Condenser
Essential or Recommended Tools
Specifications
Other Material
Remove Air Conditioning Condenser/Fuel Cooler
Install Air Conditioning Condenser/Fuel Cooler
Replace Hydraulic Oil Cooler
Leak Test Hydraulic Oil Cooler
Group 35: Exhaust System
Specifications
Remove and Install Exhaust System
Section 40: Electrical
Group 05: Connectors
Essential or Recommended Tools
Other Material
Use Electrical Insulating Compound
Using High-Pressure Washers
Repair AMP Injection Pump Connector
Remove Connector Body from Blade Terminals
Repair CINCH Connectors
Repair 32 and 48 Way CINCH Connectors
Repair CPC Blade Type Connectors
Repair CPC, Large MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated and METRIMATE METRIMATE is a trademark of AMP Incorporated Pin Type Connectors
Repair DEUTSCH Connectors
Repair ITT Connector
Repair Small MATE-N-LOC Socket Connector
Repair Small MATE-N-LOC Pin Connector
Repair (Pull Type) METRI-PACK METRI-PACK is a trademark of Delphi Packard Electric Systems Connectors
Repair (Push Type) METRI-PACK Connectors
Repair Molex Connector
Repair SUMITOMO™ Connectors
Repair Weather Pack Weather Pack is a trademark of Packard Electric Connector
Repair YAZAKI™ Connectors
Group 10: Wiring Harness Routings
Ground Point Locations
Cab Harness Routing—(POWRQUAD-PLUS or AUTOQUAD-PLUS)
Cab Harness Routing—(AUTOPOWR/IVT)
Main Armrest Control Unit (ACU) Harness Routing
Armrest Control Unit (ACU) Harness Routing
Outer Cab Roof Harness Routing
Loader Light Harness
Hood Light Harness (North American)
Hood Light Harness (European)
Hood Light Harness (HID)
ActiveSeat ActiveSeat is a trademark of Deere & Company Harness Routing—(POWRQUAD-PLUS or AUTOQUAD-PLUS)
ActiveSeat ActiveSeat is a trademark of Deere & Company Harness Routing Harness Routing—(AUTOPOWR/IVT)
Heated Seat Harness
Loader Joystick Harness Routing—(Cab)
Front PTO Harness Routing—(Cab)
Manual A/C Harness Routing
ClimaTrak ClimaTrak is a trademark of Deere & Company Harness Routing
Right-Hand Console Harness Routing—(North American)
Right-Hand Console Harness Routing—(European)
Engine/Chassis Harness Routing and Component Identification (6.8L)—POWRQUAD-PLUS or AUTOQUAD-PLUS
Engine/Chassis Harness Routing and Component Identification (8.1L)—POWRQUAD-PLUS or AUTOQUAD-PLUS
Engine/Chassis Harness Routing and Component Identification (6.8 L)— AutoPowr is a trademark of Deere & Company /IVT
Engine/Chassis Harness Routing and Component Identification (8.1 L) AutoPowr is a trademark of Deere & Company /IVT
Harness Routing—Front PTO
Harness Routing—Suspended MFWD Axle and Front Brakes
Harness Routing—SCV 5 & 6, Grapple, Loader, and Front Hitch
Harness Routing—Tractor Equipment Control Unit (TECU)
Transmission Harness Routing and Component Identification—POWRQUAD-PLUS or AUTOQUAD-PLUS
Transmission Harness Routing and Component Identification— AutoPowr is a trademark of Deere & Company /IVT
Wire Number and Color Codes
Load Center Panel—(North American)
Load Center Panel—(European)
Relay Panel—(Lights, Wipers, and A/C)
Replace Load Center Fuses and Relays
Group 15: Charging Circuit
Repair Alternator—Use CTM
Exploded View—Alternator
Remove and Install Alternator
Group 20: Starting Circuit
Essential or Recommended Tools
Specifications
Repair Starter—Use CTM
Remove and Install Starter Motor
Replace Starter Circuit Relay
Replace Fusible Link
Group 25: Solenoids and Switches
Specifications
Replace Ether Starting Aid Solenoid and Switch
Replace Brake Switch—Non-AUTOPOWR/IVT
Replace Brake Switch
Replace MFWD Switch
Replace MFWD Solenoid
Replace Differential Lock Switch
Replace Rear PTO Shaft Select Switch
Replace Differential Lock and Rear PTO Solenoids
Replace Hitch Raise and Lower Solenoids
Replace Hitch Position Potentiometer Assembly
Replace Clutch Pedal Position Sensor
Remove Electrical Switches, Sensors and Solenoids—POWRQUAD-PLUS or AUTOQUAD-PLUS Transmissions
Electrical Controls and Switches—AutoPowr™/IVT™ Transmission
Replace AutoPowr™/IVT™ Hydro Control Solenoid
Replace AutoPowr™/IVT™ Fixed Unit Speed Sensor
Replace AutoPowr™/IVT™ Carrier Speed Sensor
Replace AUTOPOWR/IVT Hand Throttle/Speed Selector Assembly
Replace AUTOPOWR/IVT Set-Speed Switch
Replace SCV Control Lever
Group 30: Monitoring System
Essential or Recommended Tools
Other Material
Replace Engine Oil Pressure Sensor
Replace Engine Crank Speed Sensor
Replace Engine Coolant Temperature Sensor
Replace Air Filter Restriction Indicator Sensor
Replace Fuel Level Sensor
Replace Hydraulic Oil Filter Restriction Sensor
Remove and Install Draft Link Sensor
Adjust Draft Link Sensor
Replace Rear PTO Speed Sensor
Replace Radar Speed Sensor
Replace MFWD Speed Sensor—AutoPowr™/IVT™
Replace AutoPowr™/IVT™ Primary Wheel Speed Sensor