John Deere 770G, 770GP, 772G, and 772GP Motor Grader Repair Technical Manual (TM12142)

John Deere 770G, 770GP, 772G, and 772GP Motor Grader Index:

• Contents
  • General Information
    • Safety
      • Recognize Safety Information
      • Follow Safety Instructions
      • Operate Only If Qualified
      • Wear Protective Equipment
      • Avoid Unauthorized Machine Modifications
      • Inspect Machine
      • Stay Clear of Moving Parts
      • Avoid High-Pressure Fluids
      • Avoid High-Pressure Oils
      • Work In Ventilated Area
      • Prevent Fires
      • Prevent Battery Explosions
      • Handle Chemical Products Safely
      • Dispose of Waste Properly
      • Prepare for Emergencies
      • Clean Debris from Machine
      • Use Steps and Handholds Correctly
      • Start Only From Operator’s Seat
      • Use and Maintain Seat Belt
      • Prevent Unintended Machine Movement
      • Avoid Work Site Hazards
      • Keep Riders Off Machine
      • Avoid Backover Accidents
      • Avoid Machine Tip-Over
      • Operating Or Traveling On Public Roads
      • Inspect and Maintain ROPS
      • Add and Operate Attachments Safely
      • Park and Prepare for Service Safely
      • Service Cooling System Safely
      • Remove Paint Before Welding or Heating
      • Make Welding Repairs Safely
      • Drive Metal Pins Safely
      • Service Tires Safely
    • Torque Values
      • Metric Bolt and Cap Screw Torque Values
      • Additional Metric Cap Screw Torque Values
      • Unified Inch Bolt and Cap Screw Torque Values
      • Service Recommendations for 37° Flare and 30° Cone Seat Connecto
      • Service Recommendations for O-Ring Boss Fittings
      • Service Recommendations For Flared Connections—Straight or Taper
      • Service Recommendations For Flat Face O-Ring Seal Fittings
      • O-Ring Face Seal Fittings With SAE Inch Hex Nut And Stud End For
      • O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For S
      • O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For H
      • Service Recommendations for Metric Series Four Bolt Flange Fitti
      • Service Recommendations For Inch Series Four Bolt Flange Fitting
      • Inch Series Four Bolt Flange Fitting For High Pressure Service R
      • Service Recommendations For Non-Restricted Banjo (Adjustable) Fi
      • Service Recommendations For O-Ring Boss Fittings With Shoulder
      • Metric 24° O-Ring Seal DIN 20078 Service Recommendations
  • Wheels
    • Powered Wheels and Fasteners
      • Wheel Remove and Install
      • Tire Remove and Install
  • Axles and Suspension Systems
    • Input Drive Shafts and U-Joints
      • Transmission-to-Rear Axle Drive Shaft Remove and Install
      • Transmission-to-Rear Axle Drive Shaft Disassemble and Assemble
    • Non-Powered Wheel Axles
      • Front Wheel Hub and Spindle Remove and Install—Non 6WD
      • Front Wheel Hub and Spindle Disassemble and Assemble—Non 6WD
      • Front Axle Remove and Install—Non 6WD
    • Powered Wheel Axles
      • Front Wheel Hub and Spindle Remove and Install—6WD
      • Front Wheel Hub and Spindle Disassemble and Assemble—6WD
      • Front Wheel Hub and Spindle Disassemble and Assemble with Steeri
      • 6WD Drive Hub Disassemble and Assemble
      • Planetary Drive Disassemble and Assemble
      • Planetary Brake Disassemble and Assemble
      • 6WD Bearings Remove and Install
      • 6WD O-Ring Metal Face Seal Remove and Install
      • Front Axle Remove and Install—6WD
    • Axle Shafts, Bearings, and Reduction Gears
      • TEAMMATE™ II 1400 Series Inboard Planetary Axle—Use CTM43
      • Rear Axle Remove and Install
      • Tandem and Wheel Axle Assembly Remove and Install
      • Tandem Wheel Axle Assembly Remove and Install
      • Tandem Wheel Axle Assembly Disassemble and Assemble
      • Tandem Pivot Disassemble and Assemble
      • Final Drive Axle Remove and Install
      • Tandem Drive Shaft Remove and Install
      • Drive Chain Remove and Install
    • Hydraulic System
      • 6WD Pump Remove and Install
      • 6WD Pump Disassemble
      • 6WD Pump Assemble
      • 6WD Charge Pump Remove and Install
      • 6WD Engagement Manifold Remove and Install
      • Differential Lock Pump Remove and Install
      • 6WD Motor Remove and Install
      • 6WD Motor Disassemble and Assemble
  • Transmission
    • Removal and Installation
      • DF180 Transmission
      • Transmission Remove and Install
    • Hydraulic System
      • Transmission Charge Pump Remove and Install
  • Engine
    • Removal and Installation
      • John Deere Engine
      • Engine Remove and Install—Engine 6090HDW01
      • Engine Remove and Install—Engine 6090HDW04
  • Engine Auxiliary System
    • Cooling System
      • Fan Blade Remove and Install
      • Radiator Remove and Install
      • Hydraulic and Differential Oil Cooler Remove and Install
      • Transmission Oil Cooler Remove and Install
      • Fuel Cooler Remove and Install
      • Charge Air Cooler Remove and Install
    • External Fuel Supply Systems
      • Fuel Tank Remove and Install
      • Fast Fill Fuel System Disassemble and Assemble—If Equipped
  • Torsional Isolator
    • Elements
      • Torsional Isolator Remove and Install
  • Steering System
    • Power Steering
      • Toe-In Check and Adjustment
    • Hydraulic System
      • Steering Wheel, Column, and Valve Remove and Install—Standard Co
      • Steering Wheel, Column, and Valve Remove and Install—EH Controls
      • EH Controls Steering Canceling Valve Remove and Install
      • Steering Cylinder Remove and Install
      • Hydraulic Cylinder Disassemble and Assemble
      • Wheel Lean Cylinder Remove and Install
      • Secondary Steering Accumulator Remove and Install—If Equipped
  • Service Brakes
    • Active Elements
      • Service Brake Repair
    • Hydraulic System
      • Service Brake Valve Remove and Install
      • Service Brake Bleeding
      • Brake Accumulator Remove and Install
  • Park Brake
    • Active Elements
      • Park Brake Repair
  • Frame, Chassis or Supporting Structure
    • Frame Installation
      • Welding On Machine
      • Welding Repair of Major Structure
      • Separate Frames at Articulation Joint
      • Articulation Bearing Replacement
      • Rear Platform Remove and Install
  • Operator’s Station
    • Removal and Installation
      • Cab Remove and Install
      • Cab Remove and Install—GP Machine Only
    • Operator Enclosure
      • Windowpanes Remove and Install
      • Cab Door Handle Remove and Install
      • Cab Door Latch Remove and Install
      • Rivet Nut Installation
    • Pedal Assembly
      • Inching Pedal Remove and Install
    • Steering Tilt Console
      • Steering Support Console Remove and Install—Standard Controls
      • Steering Support Console Remove and Install—EH Controls
      • Console Tilt Remove and Install
      • Steering Tilt Assembly Remove and Install
    • Seat and Seat Belt
      • Seat Remove and Install
      • Seat Belt Remove and Install
      • Armrest Remove and Install
      • Armrest Remove and Install—EH Controls
      • Armrest Disassemble and Assemble—EH Controls
      • Standard Seat Disassemble and Assemble
      • Deluxe Seat Disassemble and Assemble
      • Air Suspension Disassemble and Assemble
    • Heating and Air Conditioning
      • R134a Refrigerant Cautions and Proper Handling
      • Flush and Purge Air Conditioner System
      • R134a Refrigerant Oil Information
      • R134a Refrigerant Recovery/Recycling and Charging Station Instal
      • R134a System Recover
      • R134a System Evacuate
      • R134a System Charge
      • Expansion Valve Remove and Install
      • Freeze Control Switch Remove and Install
      • High/Low Pressure Switch Remove and Install
      • Heater Control Valve Remove and Install
      • Heater Control Valve Leak Check
      • Blower Motor Assembly Remove and Install
      • Compressor Remove and Install
      • Condenser Remove and Install
      • Heater and Air Conditioner Remove and Install
      • Receiver-Dryer Remove and Install
      • Accumulator Remove and Install
  • Sheet Metal and Styling
    • Engine Enclosure
      • Engine Service Doors and Side Shields Remove and Install
      • Engine Covers Remove and Install
    • Grille and Grille Housing
      • Grille Housing Remove and Install
  • Main Hydraulic System
    • Hydraulic System
      • Vacuum Pump Installation
      • Hydraulic Pump Remove and Install
      • Hydraulic Pump Disassemble and Assemble
      • Hydraulic System Manifold Remove and Install
      • Hydraulic System Manifold Disassemble and Assemble
      • Soft Start Valve Remove and Install
      • Soft Start Valve Disassemble and Assemble
      • Hydraulic Fan Pump Remove and Install
      • Hydraulic Fan Motor Remove and Install
      • Hydraulic Fan Valve Remove and Install
      • Hydraulic Attenuator Remove and Install
      • General Oil Cleanup Procedure
      • Hydraulic/Hydrostatic Component Failure Cleanup Procedure
  • Grading Device
    • Controls Linkage
      • Control Linkage Remove and Install
    • Frames
      • NeverGrease™ Pin Joints
      • Lift Arms Remove and Install
      • Saddle Locking Cylinder Remove and Install
      • Saddle Frame Remove and Install
      • Blade Pitch Frame Remove and Install
      • Draft and Circle Frame Remove and Install
      • Circle Adjustment
      • Blade Side Shift Wear Inserts Remove and Install
    • Circle Gearbox
      • Circle Drive Gearbox Remove and Install
      • Circle Drive Gearbox Disassemble and Assemble
      • Circle Drive Gearbox (With Slip Clutch) Disassemble and Assemble
      • Circle Rotate Sensor Remove and Install
    • Hydraulic System
      • Grader Control Valve Remove and Install
      • Draft Frame Mount Grader Control Valve Remove and Install—EH Con
      • Cab Mount Grader Control Valve Remove and Install—EH Controls
      • Grader Control Valve Disassemble and Assemble
      • Midmount Scarifier Valve Section Disassemble and Assemble
      • Midmount Scarifier Valve Section Disassemble and Assemble—EH Con
      • Blade Lift Valve Section Disassemble and Assemble
      • Blade Lift Valve Section Disassemble and Assemble—EH Controls
      • Auxiliary (With Float) Valve Section Disassemble and Assemble
      • Auxiliary (Without Float) Valve Section Disassemble and Assemble
      • Auxiliary Valve Section Disassemble and Assemble—EH Controls
      • Wheel Lean, Articulation, Circle Side Shift, Blade Pitch, and Bl
      • Wheel Lean, Articulation, Circle Side Shift, Blade Pitch, Blade
      • Circle Rotate Valve Section Disassemble and Assemble
      • Circle Rotate Valve Section Disassemble and Assemble—EH Controls
      • Return Check Poppets Disassemble and Assemble
      • Circle Rotate Motor Disassemble and Assemble
      • Rotary Manifold Remove and Install
      • Blade Lift, Blade Pitch, and Circle Side Shift Cylinders Remove
      • Blade Side Shift Cylinder Remove and Install
      • Articulation Cylinders Remove and Install
  • Ground Conditioning Tool
    • Frames
      • NeverGrease™ Pin Joints
      • Scarifier/Blade Remove and Install
      • Midmount Scarifier Remove and Install
      • Midmount Scarifier Cylinder Remove and Install
      • Ripper Remove and Install
      • Ripper Cylinders Remove and Install
      • Balderson™ Style Front Lift Group Remove and Install
  • Dealer Fabricated Tools
    • Dealer Fabricated Tools
      • DF1057—Axle Adjusting Tool
      • DFT1101 Cab and ROPS Lift Bracket
      • DFT1151—Outboard Bearing Driver
      • DFT1152—Inboard Bearing Driver
      • DFT1225—Rolling Torque Measurement Tool
      • DFT1250 Lifting Bracket
      • DFT1282—King Pin Torque Adapter
      • DFT1308 Transmission Support Bracket
      • DFT1310—Cab Mount Control Valve Support Bracket
      • DFT1311—Extension for DFT1250

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