John Deere 4120 (610001-) and 4320 (620001 Component Technical Manual TM105019 09JUL13

Table of contents
FOREWORD
Section 10 – SAFETY
Group 05 – Safety

Section 20 – SPECIFICATIONS AND INFORMATION
Group 05 – General Specifications
Group 10 – Fuel and Lubricants
Group 15 – Serial Number Locations

Section 30 – ENGINE
Group 05 – Specifications
Group 10 – Tools and Materials
Group 15 – Repair

Section 40 – ELECTRICAL
Group 05 – General Information
Group 10 – Specifications
Group 15 – Component Location
Group 20 – Schematics and Harnesses
Group 25 – Operation and Diagnostics
Group 30 – Tests and Adjustments
Group 35 – Repair
Group 40 – Service Codes
Group 45 – Electronic Controllers
Group 50 – Operation and Diagnostics – DTCs (TCU)
Group 55 – Operation and Diagnostics – DTCs (ICC)

Section 50 – ELECTRICAL – EUROPEAN
Group 05 – Specifications
Group 10 – Component Location
Group 15 – Schematics and Harnesses
Group 20 – Operation and Diagnostics
Group 25 – Service Codes
Group 30 – Electronic Controllers
Group 35 – Operation and Diagnostics – DTCs (TCU)
Group 40 – Operation and Diagnostics – DTCs (ICC)

Section 60 – POWER TRAIN – PRT
Group 05 – Specifications
Group 10 – Component Location
Group 15 – Theory of Operation
Group 20 – Tests and Adjustments
Group 25 – Repair

Section 70 – POWER TRAIN – HYDROSTATIC
Group 05 – Specifications
Group 10 – Component Location
Group 15 – Schematics
Group 20 – Theory of Operation
Group 25 – Diagnostics
Group 30 – Tests and Adjustments
Group 35 – Repair

Section 80 – POWER TRAIN – FINAL DRIVE
Group 05 – Specifications
Group 10 – Component Location
Group 15 – Theory of Operation
Group 20 – Diagnostics
Group 25 – Tests and Adjustments
Group 30 – Repair
Group 35 – PTO Theory of Operation
Group 40 – PTO Repair

Section 90 – HYDRAULICS
Group 05 – Specifications
Group 10 – Component Location
Group 15 – Schematics & Harnesses
Group 20 – Theory of Operation
Group 25 – Diagnostics
Group 30 – Tests and Adjustments
Group 35 – Repair

Section 100 – STEERING
Group 05 – Specifications
Group 10 – Component Location
Group 15 – Theory of Operation
Group 20 – Diagnostics
Group 25 – Tests and Adjustments
Group 30 – Repair

Section 110 – BRAKES
Group 05 – Specifications
Group 10 – Component Location
Group 15 – Theory of Operation
Group 20 – Diagnostics
Group 25 – Tests and Adjustments
Group 30 – Repair

Section 120 – MISCELLANEOUS
Group 05 – Specifications
Group 10 – Repair