8120, 8220,
8320, 8420,
and 8520
Tractors
Operation and Test
TECHNICAL MANUAL
8120, 8220, 8320, 8420 and 8520
Tractors Operation and Test
TM1980 20DEC04 (ENGLISH)
For complete service information also see:
8120, 8220, 8320, 8420, and 8520 Tractors
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM1970
POWERTECH 8.1L Diesel Engines - Level
9 Electronic Fuel Systems With Denso
In-Line Pump . . . . . . . . . . . . . . . . . . . . . . . . . CTM255
POWERTECH 8.1L Diesel Engines - Base
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CTM86
Alternators and Starters . . . . . . . . . . . . . . . . CTM77
AMS (Ag Management Solutions) Systems
and Components Diagnosis and Tests . . . . TM1909
John Deere Waterloo Works
Litho in U.S.A.
, Introduction
Foreword
This manual is written for an experienced technician. Information is organized in groups for the various
Essential tools required in performing certain service components requiring service instruction. At the
work are identified in this manual and are beginning of each group are summary listings of all
recommended for use. applicable essential tools, service equipment and tools,
other materials needed to do the job, service parts kits,
Live with safety: Read the safety messages in the specifications, wear tolerances, and torque values.
introduction of this manual and the cautions presented
throughout the text of the manual. Technical Manuals are concise guides for specific
machines. They are on-the-job guides containing only
the vital information needed for diagnosis, analysis,
This is the safety-alert symbol. When you see this
testing, and repair.
symbol on the machine or in this manual, be alert to
the potential for personal injury.
Fundamental service information is available from
other sources covering basic theory of operation,
Technical manuals are divided in two parts: repair and
fundamentals of troubleshooting, general maintenance,
operation and tests. Repair sections tell how to repair
and basic type of failures and their causes.
the components. Operation and tests sections help you
identify the majority of routine failures quickly.
DX,TMIFC –19–29SEP98–1/1
TM1980 (20DEC04) 8120, 8220, 8320, 8420 and 8520 Tractors
122004
PN=2
, Contents
210
SECTION 210—GENERAL Group 70—Hydraulic System
Group 05—Safety Group 90—CLIMATRAK (ATC) System (010001—
Group 15—General References )
SECTION 211—SERVICE CODES SECTION 220—ENGINE
211
Group ACU—ACU Code Diagnostics Group 10—Operational Checks
Group AMS—AMS General Diagnostic Codes Group 15—Tests and Adjustments
Group ASU—ASU Code Diagnostics Group 20—Theory of Operation
Group ATC—ATC Code Diagnostics Group 25—Schematics and Diagrams
Group CCU—CCU Code Diagnostics
Group ECU—ECU Code Diagnostics SECTION 230—FUEL AND AIR 212
Group EHo—EHo Code Diagnostics Group 20—Theory of Operation
Group HCU—HCU Code Diagnostics
Group ICU—ICU Code Diagnostics SECTION 240—ELECTRICAL
Group JdL—JdL Code Diagnostics Group 15—Tests and Adjustments
Group PCU—PCU Code Diagnostics Group 20—Theory of Operation 213
Group SCU—SCU Code Diagnostics Group 25—Schematics and Diagrams
Group SCo—SCo Code Diagnostics
Group SSU—SSU Code Diagnostics SECTION 245—CONTROL UNITS
Group SUP—SUP Code Diagnostics Group 05—Service Codes
Group ACU—ACU References
220
SECTION 212—OBSERVABLE SYMPTOMS Group ASU—ASU References
Group 05—Axles Group ATC—CLIMATRAK (ATC) References
Group 15—Electrical Group CCU—CCU References
Group 16—Ag Management Solutions (AMS) Group ECU—ECU References
Group 20—Hitch Group EHo—EHo References
Group 25—Heating, Ventilation and Air Conditioning Group HCU—HCU References 230
(Standard) Group ICU—ICU References
Group 26A—Heating, Ventilation and Air Group IMS—Implement Management System (IMS)
Conditioning - CLIMATRAK (ATC) References
(—010000) Group PCU—PCU References
Group 26B—Heating, Ventilation and Air Group SCU—SCU References
240
Conditioning - CLIMATRAK (ATC) Group SCo—SCo References
(010001—) Group SSU—SSU References
Group 30—Operator Station Group SUP—SUP References
Group 40—Power Take-Off
Group 45—Selective Control Valve SECTION 246A—AG MANAGEMENT SOLUTIONS
Group 50—Steering (AMS) — GREENSTAR 245
Group 55—Transmission Group GSS—GREENSTAR System References
SECTION 213—SYSTEM DIAGNOSIS SECTION 246B—AG MANAGEMENT SOLUTIONS
Group 40—Electrical (AMS)—JDLINK
Group 50—Transmission Group 10A—Accessing Diagnostic Addresses and 246A
Group 56—Drive Systems
Group 60—Steering and Brake Systems Continued on next page
All information, illustrations and specifications in this manual are based on
the latest information available at the time of publication. The right is
reserved to make changes at any time without notice. 246B
COPYRIGHT 2004
DEERE & COMPANY
Moline, Illinois
All rights reserved
A John Deere ILLUSTRUCTION Manual
Previous Editions
Copyright 2001, 2002, 2003
TM1980 (20DEC04) i 8120, 8220, 8320, 8420 and 8520 Tractors
122004
PN=1
, Contents
210
Codes Identification
Group 10B—Diagnostic Trouble Codes Group 15AA—AutoTrac Steering Control Unit Diag -
Group 10C—Diagnostic Addresses 8000 Series Factory Installed
Group 15A—JDLINK Machine Messenger Group 15AB—AutoTrac Steering Control Unit Diag -
Diagnostics 8000 Series Field Installed
211
Group 20A—Circuit Code Listing
SECTION 246C—AG MANAGEMENT SOLUTIONS Group 20B—Connector Information
(AMS) — AUTOTRAC
Group 5A—How to Use This Diagnostic Information SECTION 246D—AG MANAGEMENT SOLUTIONS
Group 10A—Accessing Diagnostic Addresses and (AMS) —FIELD DOC
212 Codes Group 15A—GPS Position and StarFire Receiver
Group 10B—Diagnostic Trouble Codes Operation and Tests
Group 15A—AutoTrac Identification Group 15B—FIELD DOC Basic Operation and Tests
Group 15B—AutoTrac Diagnostics - 8000 Series
Factory Installed SECTION 250—POWERSHIFT TRANSMISSION
Group 15C—AutoTrac Diagnostics - 8000 Series Group 10—Operational Checks
213
Field Installed Group 15—Tests And Adjustments
Group 15D—GREENSTAR Parallel Tracking Group 20—Theory of Operation
Identification Group 25—Schematics and Diagrams
Group 15E—Parallel Tracking Diagnostics - 8000
Series Factory Installed SECTION 256—DRIVE SYSTEMS
220 Group 15F—Parallel Tracking Diagnostics - 8000 Group 15—Tests And Adjustments
Series Field Installed Group 20—Theory of Operation
Group 15G—GREENSTAR Display Diagnostics
Group 15H—GREENSTAR Mobile Processor SECTION 260—STEERING AND BRAKES
Diagnostics Group 05—Preliminary Checks
Group 15I—STARFIRE Receiver Diagnostics Group 10—Operational Checks
230
Group 15J—GREENSTAR KeyCard Diagnostics Group 15—Tests And Adjustments
Group 15K—AutoTrac CAN Bus Identification Group 20—Theory of Operation
Group 15L—AutoTrac CAN Bus Diagnostics - 8000 Group 25—Schematics and Diagrams
Series Factory Installed
Group 15M—AutoTrac CAN Bus Diagnostics - 8000 SECTION 270—HYDRAULIC SYSTEM
240 Series Field Installed Group 05—Preliminary Checks
Group 15N—AutoTrac CCD Bus Identification Group 10—Operational Checks
Group 15O—AutoTrac CCD Bus Diagnostics - 8000 Group 15—Tests And Adjustments
Series Factory Installed Group 20—Theory of Operation
Group 15P—AutoTrac CCD Bus Diagnostics - 8000 Group 25—Schematics and Diagrams
245 Series Field Installed
Group 15Q—AutoTrac Power Identification SECTION 290—OPERATOR STATION
Group 15R—AutoTrac Power Diagnostics - 8000 Group 05—Preliminary Checks
Series Factory Installed Group 10—Operational Checks
Group 15S—AutoTrac Power Diagnostics - 8000 Group 15—Tests And Adjustments
Series Field Installed Group 20—Theory Of Operation
246A Group 15T—AutoTrac Status Identification
Group 15U—AutoTrac Status Diagnostics - 8000 SECTION 299—TOOLS
Series Factory Installed Group 10—Fabricated Tools
Group 15V—AutoTrac Status Diagnostics - 8000 Group 15—Test Kits
Series Field Installed
246B Group 15W—AutoTrac Steering Response
Identification
Group 15X—AutoTrac Steering Response Diag. -
8000 Series Factory Installed
Group 15Y—AutoTrac Steering Response Diag. -
8000 Series Field Installed
Group 15Z—AutoTrac Steering Control Unit
TM1980 (20DEC04) ii 8120, 8220, 8320, 8420 and 8520 Tractors
122004
PN=2
8320, 8420,
and 8520
Tractors
Operation and Test
TECHNICAL MANUAL
8120, 8220, 8320, 8420 and 8520
Tractors Operation and Test
TM1980 20DEC04 (ENGLISH)
For complete service information also see:
8120, 8220, 8320, 8420, and 8520 Tractors
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TM1970
POWERTECH 8.1L Diesel Engines - Level
9 Electronic Fuel Systems With Denso
In-Line Pump . . . . . . . . . . . . . . . . . . . . . . . . . CTM255
POWERTECH 8.1L Diesel Engines - Base
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CTM86
Alternators and Starters . . . . . . . . . . . . . . . . CTM77
AMS (Ag Management Solutions) Systems
and Components Diagnosis and Tests . . . . TM1909
John Deere Waterloo Works
Litho in U.S.A.
, Introduction
Foreword
This manual is written for an experienced technician. Information is organized in groups for the various
Essential tools required in performing certain service components requiring service instruction. At the
work are identified in this manual and are beginning of each group are summary listings of all
recommended for use. applicable essential tools, service equipment and tools,
other materials needed to do the job, service parts kits,
Live with safety: Read the safety messages in the specifications, wear tolerances, and torque values.
introduction of this manual and the cautions presented
throughout the text of the manual. Technical Manuals are concise guides for specific
machines. They are on-the-job guides containing only
the vital information needed for diagnosis, analysis,
This is the safety-alert symbol. When you see this
testing, and repair.
symbol on the machine or in this manual, be alert to
the potential for personal injury.
Fundamental service information is available from
other sources covering basic theory of operation,
Technical manuals are divided in two parts: repair and
fundamentals of troubleshooting, general maintenance,
operation and tests. Repair sections tell how to repair
and basic type of failures and their causes.
the components. Operation and tests sections help you
identify the majority of routine failures quickly.
DX,TMIFC –19–29SEP98–1/1
TM1980 (20DEC04) 8120, 8220, 8320, 8420 and 8520 Tractors
122004
PN=2
, Contents
210
SECTION 210—GENERAL Group 70—Hydraulic System
Group 05—Safety Group 90—CLIMATRAK (ATC) System (010001—
Group 15—General References )
SECTION 211—SERVICE CODES SECTION 220—ENGINE
211
Group ACU—ACU Code Diagnostics Group 10—Operational Checks
Group AMS—AMS General Diagnostic Codes Group 15—Tests and Adjustments
Group ASU—ASU Code Diagnostics Group 20—Theory of Operation
Group ATC—ATC Code Diagnostics Group 25—Schematics and Diagrams
Group CCU—CCU Code Diagnostics
Group ECU—ECU Code Diagnostics SECTION 230—FUEL AND AIR 212
Group EHo—EHo Code Diagnostics Group 20—Theory of Operation
Group HCU—HCU Code Diagnostics
Group ICU—ICU Code Diagnostics SECTION 240—ELECTRICAL
Group JdL—JdL Code Diagnostics Group 15—Tests and Adjustments
Group PCU—PCU Code Diagnostics Group 20—Theory of Operation 213
Group SCU—SCU Code Diagnostics Group 25—Schematics and Diagrams
Group SCo—SCo Code Diagnostics
Group SSU—SSU Code Diagnostics SECTION 245—CONTROL UNITS
Group SUP—SUP Code Diagnostics Group 05—Service Codes
Group ACU—ACU References
220
SECTION 212—OBSERVABLE SYMPTOMS Group ASU—ASU References
Group 05—Axles Group ATC—CLIMATRAK (ATC) References
Group 15—Electrical Group CCU—CCU References
Group 16—Ag Management Solutions (AMS) Group ECU—ECU References
Group 20—Hitch Group EHo—EHo References
Group 25—Heating, Ventilation and Air Conditioning Group HCU—HCU References 230
(Standard) Group ICU—ICU References
Group 26A—Heating, Ventilation and Air Group IMS—Implement Management System (IMS)
Conditioning - CLIMATRAK (ATC) References
(—010000) Group PCU—PCU References
Group 26B—Heating, Ventilation and Air Group SCU—SCU References
240
Conditioning - CLIMATRAK (ATC) Group SCo—SCo References
(010001—) Group SSU—SSU References
Group 30—Operator Station Group SUP—SUP References
Group 40—Power Take-Off
Group 45—Selective Control Valve SECTION 246A—AG MANAGEMENT SOLUTIONS
Group 50—Steering (AMS) — GREENSTAR 245
Group 55—Transmission Group GSS—GREENSTAR System References
SECTION 213—SYSTEM DIAGNOSIS SECTION 246B—AG MANAGEMENT SOLUTIONS
Group 40—Electrical (AMS)—JDLINK
Group 50—Transmission Group 10A—Accessing Diagnostic Addresses and 246A
Group 56—Drive Systems
Group 60—Steering and Brake Systems Continued on next page
All information, illustrations and specifications in this manual are based on
the latest information available at the time of publication. The right is
reserved to make changes at any time without notice. 246B
COPYRIGHT 2004
DEERE & COMPANY
Moline, Illinois
All rights reserved
A John Deere ILLUSTRUCTION Manual
Previous Editions
Copyright 2001, 2002, 2003
TM1980 (20DEC04) i 8120, 8220, 8320, 8420 and 8520 Tractors
122004
PN=1
, Contents
210
Codes Identification
Group 10B—Diagnostic Trouble Codes Group 15AA—AutoTrac Steering Control Unit Diag -
Group 10C—Diagnostic Addresses 8000 Series Factory Installed
Group 15A—JDLINK Machine Messenger Group 15AB—AutoTrac Steering Control Unit Diag -
Diagnostics 8000 Series Field Installed
211
Group 20A—Circuit Code Listing
SECTION 246C—AG MANAGEMENT SOLUTIONS Group 20B—Connector Information
(AMS) — AUTOTRAC
Group 5A—How to Use This Diagnostic Information SECTION 246D—AG MANAGEMENT SOLUTIONS
Group 10A—Accessing Diagnostic Addresses and (AMS) —FIELD DOC
212 Codes Group 15A—GPS Position and StarFire Receiver
Group 10B—Diagnostic Trouble Codes Operation and Tests
Group 15A—AutoTrac Identification Group 15B—FIELD DOC Basic Operation and Tests
Group 15B—AutoTrac Diagnostics - 8000 Series
Factory Installed SECTION 250—POWERSHIFT TRANSMISSION
Group 15C—AutoTrac Diagnostics - 8000 Series Group 10—Operational Checks
213
Field Installed Group 15—Tests And Adjustments
Group 15D—GREENSTAR Parallel Tracking Group 20—Theory of Operation
Identification Group 25—Schematics and Diagrams
Group 15E—Parallel Tracking Diagnostics - 8000
Series Factory Installed SECTION 256—DRIVE SYSTEMS
220 Group 15F—Parallel Tracking Diagnostics - 8000 Group 15—Tests And Adjustments
Series Field Installed Group 20—Theory of Operation
Group 15G—GREENSTAR Display Diagnostics
Group 15H—GREENSTAR Mobile Processor SECTION 260—STEERING AND BRAKES
Diagnostics Group 05—Preliminary Checks
Group 15I—STARFIRE Receiver Diagnostics Group 10—Operational Checks
230
Group 15J—GREENSTAR KeyCard Diagnostics Group 15—Tests And Adjustments
Group 15K—AutoTrac CAN Bus Identification Group 20—Theory of Operation
Group 15L—AutoTrac CAN Bus Diagnostics - 8000 Group 25—Schematics and Diagrams
Series Factory Installed
Group 15M—AutoTrac CAN Bus Diagnostics - 8000 SECTION 270—HYDRAULIC SYSTEM
240 Series Field Installed Group 05—Preliminary Checks
Group 15N—AutoTrac CCD Bus Identification Group 10—Operational Checks
Group 15O—AutoTrac CCD Bus Diagnostics - 8000 Group 15—Tests And Adjustments
Series Factory Installed Group 20—Theory of Operation
Group 15P—AutoTrac CCD Bus Diagnostics - 8000 Group 25—Schematics and Diagrams
245 Series Field Installed
Group 15Q—AutoTrac Power Identification SECTION 290—OPERATOR STATION
Group 15R—AutoTrac Power Diagnostics - 8000 Group 05—Preliminary Checks
Series Factory Installed Group 10—Operational Checks
Group 15S—AutoTrac Power Diagnostics - 8000 Group 15—Tests And Adjustments
Series Field Installed Group 20—Theory Of Operation
246A Group 15T—AutoTrac Status Identification
Group 15U—AutoTrac Status Diagnostics - 8000 SECTION 299—TOOLS
Series Factory Installed Group 10—Fabricated Tools
Group 15V—AutoTrac Status Diagnostics - 8000 Group 15—Test Kits
Series Field Installed
246B Group 15W—AutoTrac Steering Response
Identification
Group 15X—AutoTrac Steering Response Diag. -
8000 Series Factory Installed
Group 15Y—AutoTrac Steering Response Diag. -
8000 Series Field Installed
Group 15Z—AutoTrac Steering Control Unit
TM1980 (20DEC04) ii 8120, 8220, 8320, 8420 and 8520 Tractors
122004
PN=2
