Overview
The John Deere 9420, 9520, 9620 tractor repair service manual provides a technical reference for the covered equipment. Its purpose is to help locate information relevant to inspection, troubleshooting, servicing and repair, as applicable to the supplied publication.
The supplied contents outline identifies GENERAL, SERVICE CODES, OBSERVABLE SYMPTOMS and SYSTEM DIAGNOSIS. The table below follows the provided section names and selected topics; consult the manual for the exact procedures and specifications.
Table of Contents
John Deere 9420, 9520, 9620 Manual
Main sections and selected subjects identified in the source documentation:
- GENERAL
- SERVICE CODES
- OBSERVABLE SYMPTOMS
- SYSTEM DIAGNOSIS
- ENGINE
- FUEL AND AIR
- ELECTRICAL
- CONTROL UNITS
- SECTION 210—GENERAL
- Group 05—Safety
- Group 10—General Specifications
- Group 15—General References
- SECTION 211—SERVICE CODES
- Group ACU—ACU Code Diagnostics
- Group AMS—AMS Code Diagnostics
- Group ASU—ASU Code Diagnostics
- Group ATC—ATC Code Diagnostics
- Group CCU—CCU Code Diagnostics
- Group ECU—ECU Code Diagnostics
- Group HCU—HCU Code Diagnostics
- Group ICU—ICU Code Diagnostics
- Group JDL—JDL Code Diagnostics
- Group PCU—PCU Code Diagnostics
- Group SCo—SCo Code Diagnostics
- Group SCU—SCU Code Diagnostics
- Group SSU—SSU Code Diagnostics
- Group SUP—SUP Code Diagnostics
- SECTION 212—OBSERVABLE SYMPTOMS
- Group 05—Axles
- Group 15—Electrical
- Group 16—Ag Management Solutions (AMS)
- Group 20—Hitch
Using the Technical Reference
Use the identified sections to locate relevant information, and follow any model-specific instructions, limits and precautions in the original documentation.










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