John Deere 8120T 8220T 8320T 8420T 8520T Track Tractors Repair Service Workshop Manual (TM1971) PDF - MJODTM1971.zip
A full workshop service and repair technical guide covering the John Deere 8120T, 8220T, 8320T, 8420T, and 8520T tracked tractors, packed with everything needed to keep up, fix, and overhaul these machines the way trained technicians do.
The John Deere 8120T, 8220T, 8320T, 8420T & 8520T Tracks Tractors technical repair manual 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.
tm1971 - 8120T, 8220T, 8320T, 8420T and 8520T Tractors Repair Technical Manual.pdf
tm1971 - 8120T, 8220T, 8320T, 8420T and 8520T Tractors Repair Technical Manual.epub
Total Pages: 1,214 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English
MAIN SECTIONS
Foreword
Dealer Predelivery Information Form
General Information
Safety
General Information
Engine
Component Removal and Installation
Engine Repair
Fuel and Cooling Systems
Diesel Fuel System
Air Intake System
Engine Cooling System
Coolers and Air Conditioning Condenser
Electrical
Connectors
Wiring Harness Routings
Charging Circuit
Starting Circuit
Relays, Fuses, Solenoids, and Switches
Monitoring Systems and Sensors
Armrest Control
Implement and Accessory Connectors
Convenience and Accessory Components
Transmission
Component Removal and Installation
In-Tractor Repair
Transmission
Drive Systems
Component Removal and Installation
Rear Axle Assembly
Outboard Planetary Final Drive
PTO
Steering Gears
Mid-Frame Drive Shafts
Steering and Brakes
Component Removal and Installation
Steering Column
Steering Wheel Position Input Assembly
Steering Pump
Steering Motor
Brake Valve
Brake Components
Hydraulics
Component Removal and Installation
Hydraulic System Repair and Cleanup
Tandem Hydraulic Pump (Transmission Control-Charge)
Secondary Hydraulic Pump (Hitch-SCV)
Hydraulic Filter Bypass
Hitch Valve, Selective Control Valves, and Couplers
Hitch
Miscellaneous
Hood
Operator Station
Component Removal and Installation
Heating, Ventilating, and Air Conditioning (HVAC)
Air Conditioning System
Air Suspension Seat
Armrest
Cab Door and Windshield
Track Frame and Components
Tracks
Tension Cylinder and Accumulator
Track Frame
Dealer Fabricated Tools
Fabricated Tools
tm1971 - 8120T, 8220T, 8320T, 8420T and 8520T Tractors Repair
Table of Contents
Foreword
Dealer Predelivery Information Form
Section 10: General Information
Group 05: Safety
Recognize Safety Information
Handle Fluids 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
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
Group 10: General Information
General Specifications
Overall Dimensions
Sealants and Adhesives Cross-Reference Chart
Metric Bolt and Screw Torque Values
Unified Inch Bolt and Screw Torque Values
Glossary of Terms
Section 20: Engine
Group 00: Component Removal and Installation
Essential or Recommended Tools
Specifications
Remove Engine
Install Engine
Remove Front Frame
Install Front Frame
Group 05: Engine Repair
Engine Repair—Use CTM86 or CTM255
Section 30: Fuel and Cooling Systems
Group 05: Diesel Fuel System
Remove and Install Fuel Fill Tank
Remove and Install Main Fuel Tank
Replace Fuel Filter, Fuel Pump, and Bleed Fuel System
Group 10: Air Intake System
Specifications
Other Material
Service Air Intake System
Repair Aspirator
Group 15: Engine Cooling System
Essential or Recommended Tools
Specifications
Test Radiator and Coolant Tank Cap
Remove and Install Radiator/Aftercooler
Auxiliary Drive Belt Routing
Inspect Tensioner
Repair Variable Fan Drive Assembly
Remove and Install Vistronic Fan Drive—8520T
Group 20: Coolers and Air Conditioning Condenser
Essential or Recommended Tools
Specifications
Other Material
Remove Air Conditioning Condenser
Install Air Conditioning Condenser/Fuel Cooler
Replace Hydraulic Oil Cooler
Leak Test Hydraulic Oil Cooler
Section 40: Electrical
Group 05: Connectors
Essential or Recommended Tools
Other Material
Use Electrical Insulating Compound
Using High-Pressure Washers
Repair AMP Connector
Remove Connector Body from Blade Terminals
Repair CINCH Connectors
Repair CPC CPC is a trademark of AMP Incorporated Blade Type Connectors
Repair CPC CPC is a trademark of AMP Incorporated , 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 DEUTSCH is a trademark of Deutsch Company Connectors
Repair Small MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated Socket Connector
Repair Small MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated Pin Connector
Repair (Pull Type) METRI-PACK METRI-PACK is a trademark of Delphi Packard Electric Systems Connectors
Repair (Push Type) METRI-PACK METRI-PACK is a trademark of Delphi Packard Electric Systems Connectors
Repair SUMITOMO™ Connectors
Repair Weather Pack Weather Pack is a trademark of Packard Electric Connector
Repair YAZAKI™ Connectors
Group 10: Wiring Harness Routings
Wire Number and Color Codes
Ground Point Locations
#1 Cab Ground (Roof)
#2 Cab Ground (Floor)
# 3 Chassis (Single Point Ground)
Miscellaneous Grounds
Main Chassis Harness Routing and Component Identification
Cab Harness Routing and Component Identification—North American
Cab Harness Routing and Component Identification—European
Transmission Harness Routing and Component Identification
Pump Drive Housing Harness Routing
Roof Harness Routing and Component Identification
Remote Mirror Harness Routing and Component Identification
GREENSTAR GREENSTAR is a trademark of Deere & Company Harness Routing and Component Identification
Battery Cable Routing
Starter and Alternator Power Cable Routing
Group 15: Charging Circuit
Repair Alternator—Use CTM77
Disconnect Electrical Circuit
Exploded View—Alternator
Replace Alternator
Group 20: Starting Circuit
Essential or Recommended Tools
Specifications
Repair Starter—Use CTM
Disconnect Electrical Circuit
Remove and Install Starter Motor
Replace Fusible Link
Replace Starter Circuit Relay
Replace Neutral Start Switch
Group 25: Relays, Fuses, Solenoids, and Switches
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures—Solenoids
Disconnect Electrical Circuit
Load Center Fuses—North America
Load Center Fuses—European
Load Center Relays and Diodes—North America
Load Center Relays and Diodes—European
Replace Starting Aid Solenoid
Replace Electro-Hydraulic Shift Valve Solenoids
Replace Park Brake Release Solenoid
Replace PTO Electro-Hydraulic Valve
Replace SCV Solenoids
Replace Hitch Valve Solenoids
Replace Engine Oil Pressure Switch
Replace Air Filter Restriction Switch
Replace Transmission Manifold Electrical Switches
Exploded View—Right Console Controls and Switches
Replace Right Console Switches
Replace Dome Light Switch
Replace Cab Door Light Switch
Replace Beacon Light Switch
Replace Starting Aid and Ignition Switch
Replace Seat Raise/Lower Switch
Replace Operator Presence Seat Switch
Replace Brake Light Switch
Replace Hand Brake Switch and Potentiometer—European
Replace Hydraulic Clean-Oil Reservoir Level Switch
Replace External Hitch Raise/Lower Switches
Replace A/C High- and Low-Pressure Switch
Replace A/C Deicing Switch and Blower Motor Resistor
Group 30: Monitoring Systems and Sensors
Essential or Recommended Tools
Other Material
Specifications
Disconnect Electrical Circuit
Replace Instrument Control Unit and SCV Set-up Panel
Replace Bulbs in Instrument Control Unit (ICU)
Replace Bulbs SCV Set-Up Panel (SUP)
Replace Corner Post Display and Bulbs
Replace Steering Column Module Bulbs
Replace Steering Column Module
Control Units and Component Identification
Replace Control Units
Replace EEPROM EEPROM—Electrically Erasable Programmable Read-Only Memory In Control Units
Remove EEPROM
Install Replacement EEPROM
Replace Engine Coolant Temperature Sensor
Replace Engine Crank Speed Sensor
Replace Fuel Level Sensor
Replace Fuel Temperature Sensor
Replace Air Intake Temperature Sensor
Replace Foot Throttle Sensor
Replace Track Tension Pressure Sensor
Replace Wheel Speed Sensor
Replace Radar Speed Sensor
Replace PTO Speed Sensor
Replace Steering Motor Speed Sensor
Replace Steering Filter Oil Restriction Sensor
Replace Hydraulic Oil Filter Restriction Sensor and Temperature Sensor
Replace Hitch Position Sensor
Replace Draft Sensing Sensor
CLIMATRAK CLIMATRAK is a trademark of Deere & Company Wire Harness and Component Identification
Replace Outlet Duct Temperature Sensor
Replace Cab Temperature Sensor
Replace Fresh Air Temperature Sensor
Replace Evaporator Temperature Sensor
Group 35: Armrest Control
Disconnect Electrical Circuit
Armrest Test Procedures
Replace Armrest Control Assembly
Replace Armrest Control Unit (ACU)
Exploded View—Armrest Control
Replace Armrest Controls
Exploded View—Engine Speed Control
Exploded View—Transmission Control
Exploded View—SCV Control Lever
Replace Hitch Control
Group 40: Implement and Accessory Connectors
Replace Seven-Terminal Outlet Socket
Replace GREENSTAR GREENSTAR is a trademark of Deere & Company Terminal Connector
Replace Three-Pin Accessory Outlets
Diagnostic/Program Connector
Replace and Adjust Field Lights
Group 45: Convenience and Accessory Components
Replace Circulation Blower Motor
Replace Heating, Ventilation, and Air Conditioning (HVAC) Pressurizer Blower Motor
Replace Seat Air Compressor Motor
Replace Wiper Motors
Replace Windshield Washer Pumps
Replace Hydraulic Charge Pump Auxiliary Heater
Replace Transmission Auxiliary Heater
Remove Radio and Speakers
Section 50: Transmission
Group 00: Component Removal and Installation