John Deere 770G, 770GP, 772G and 772GP Motor Graders (SN: 634380-656507) with iT4/S3B Engines Operation and Test Manual (TM12139)

Table of Contents:
   Introduction
      Foreword
      Manual Identification - READ THIS FIRST!
   General Information
      Safety
   Diagnostics
      PCU Diagnostic Trouble Codes
      ECU Diagnostic Trouble Codes
      ADU Diagnostic Trouble Codes
      FLC Diagnostic Trouble Codes
      HVC Diagnostic Trouble Codes
      AVC Diagnostic Trouble Codes
      OC3 Diagnostic Trouble Codes
      HWD Diagnostic Trouble Codes
      LJ1 Diagnostic Trouble Codes
      LJ2 Diagnostic Trouble Codes
      LJ3 Diagnostic Trouble Codes
      LJ4 Diagnostic Trouble Codes
      RJ1 Diagnostic Trouble Codes
      RJ2 Diagnostic Trouble Codes
      RJ3 Diagnostic Trouble Codes
      RJ4 Diagnostic Trouble Codes
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics
      Monitor Operation
      References
   Six Wheel Drive (6WD)
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Power Train
      Theory of Operation
      Diagnostic Information
      Tests
   Hydraulic System
      Theory of Operation
      Diagnostic Information
      Tests
   Heating and Air Conditioning
      Theory of Operation
      Diagnostic Information
      Tests
      Section 9000
      Section 9001
      Section 9005
      Section 9010
      Section 9015
      Section 9016
      Section 9020
      Section 9025
      Section 9031