Complete service Diagnostics, Operation and Tests manual with Electrical Wiring Diagrams for John Deere Motor Graders 670C, 670CH, 672CH, 770C, 770CH, 772CH Series II, with all the shop information to maintain, diagnose, and rebuild like professional mechanics.

John Deere Motor Graders 670C, 670CH, 672CH, 770C, 770CH, 772CH Series II workshop Operation and Test manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

  672CH Series II
  772CH Series II
  670C Series II
  670CH Series II
  770C Series II
  770CH Series II

TM1914 - John Deere Motor Graders 670C, 670CH, 672CH, 770C, 770CH, 772CH Series II Technical Manual - Operation and Test.PDF
TM1914 - John Deere Motor Graders 670C, 670CH, 672CH, 770C, 770CH, 772CH Series II Technical Manual - Operation and Test.epub

Total Pages: 814 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
Foreword
   Technical Information Feedback Form
   General Information
      Safety
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory Of Operation
      Diagnostic Information
      Adjustments
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics
      References And Tests
   Hydrostatic Front Wheel Drive (HFWD)
      Theory Of Operation
      Diagnostic Information
      Adjustments And Checks
      Tests
   Power Train
      Theory Of Operation
      Diagnostic Information
      Adjustments
      Tests
   Hydraulic System
      Theory Of Operation
      Diagnose Malfunctions
      Adjustments
      Tests
   Heating And Air Conditioning
      Theory Of Operation
      Diagnostic Information
      Tests

tm1914 - C Series II Motor Graders

Table of Contents

Foreword

Technical Information Feedback Form

Section 9000: General Information

Group 01: 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

Beware of Exhaust Fumes

Prevent Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Dispose of Waste Properly

Prepare for Emergencies

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

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Complete Machine Operational Checkout

Section 9010: Engine

Group 05: Theory Of Operation

Supplement Support Manuals

Surge Tank Operation

Air Intake and Exhaust System Operation—6081 Engine

Cold Start Theory of Operation 670C, 770C, 770CH, 772CH (670CH, 672CH S.N. —589368)

Group 15: Diagnostic Information

Diagnose Engine Malfunctions (670CH, 672CH S.N. —589368 And 770C, 770CH, 772CH)

Diagnose Engine Malfunctions (670CH, 672CH S.N. 589369— )

Engine Cranks/Won’t Start or Starts Hard, Diagnostic Procedure (B1)—(670CH, 672CH, S.N. —589368 And 770C, 770CH, 772CH)

Engine Does Not Develop Full Power, Diagnostic Procedure (B2)— 770CH, 772CH

Group 20: Adjustments

JT05801 Clamp-On Electronic Tachometer Installation

Engine Belt Tensioner Spring Check

Fan Belt Tensioner Spring Check

Adjust Engine Speed Linkage—670C

Adjust Engine Speed Linkage—670CH, 672CH, 770C, 770CH, 772CH

Primary Fuel Filter, Drain Valve—670C, 670CH, 672CH (S.N. —589368)

Primary Fuel Filter, Drain Valve—670C, 670CH, 672CH (S.N. 589369—)

Primary Fuel Filter, Drain Valve—770C, 770CH, 772CH

Bleed The Fuel System—670C, 670CH, 672CH

Bleed The Fuel System—770C, 770CH, 772CH

Group 25: Tests

Fuel Line Leakage Test

Air Intake System Leakage Test

Air Filter Restriction Indicator Switch Test

Intake Manifold Pressure (Turbocharger Boost PSI) and Wastegate Test

Intake Manifold Pressure (Turbocharger Boost PSI) Test

Injection Pump Rack Position Voltage Test

Fuel Supply Pump Leakage Test—670C, 670CH, 672CH

Fuel Pressure Test—770C, 770CH, 772CH

Throttle Potentiometer Test—670CH, 672CH, 770C, 770CH, 772CH

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Group 10: System Diagrams

Fuse and Relay Specifications (S.N. —589368)

Fuse and Relay Specifications (S.N. 589369— )

Functional Schematic, Wiring Diagram and Component Location Master Legend

System Functional Schematic Legend

System Functional Schematic

Roof Harness (W2) Wiring Diagram

Roof Harness (W2) Component Location

Map Light Harness (W3) Wiring Diagram

Map Light Harness (W3) Component Location

A/C Roof Harness (W7) Wiring Diagram

A/C Roof Harness (W7) Component Location

Under Seat Heater Harness (W8) Wiring Diagram

Under Seat Heater Harness (W8) Component Location

Engine Harness (W9) Wiring Diagram

Engine Harness (W9) Component Location

Engine Harness (W10) Wiring Diagram

Engine Harness (W10) Component Location

Platform Harness (W11) Wiring Diagram

Platform Harness (W11) Component Location

Transmission Harness (W13) Wiring Diagram

Transmission Harness (W13) Component Location

Side Console Harness (W15) Wiring Diagram (670C)

Side Console Harness (W15) Component Location (670C)

Side Console Harness (W16) Wiring Diagram (670CH, 770C, 770CH)

Side Console Harness (W16) Component Location (670CH, 770C, 770CH)

Side Console Harness (W17) Wiring Diagram (672CH and 772CH)

Side Console Harness (W17) Component Location (672CH and 772CH)

Side Console Harness—Detail C

Front Console Harness (W18) Wiring Diagram

Front Console Harness (W18) Component Location

A/C Compressor Harness (W20) Wiring Diagram

A/C Compressor Harness (W20) Component Location

Ripper Harness (W21) Wiring Diagram

Ripper Harness (W21) Component Location

24V Radio Harness (W31) Wiring Diagram

24V Radio Harness (W31) Component Location

HFWD Front and Rear Harness (W34 and W35) Wiring Diagram (672CH, 772CH)

HFWD Front and Rear Harness (W34 and W35) Component Location (672CH, 772CH)

Group 15: Sub-System Diagnostics

Starting and Park Brake Circuit Theory Of Operation

Soft Start Circuit Theory of Operation (If Equipped)

Transmission Controller Circuit Theory Of Operation

Engine Controller Circuit Theory Of Operation (670C, 770C)

Engine Controller Circuit Theory Of Operation (670CH, 672CH S.N. 589369— )

Display Monitor Circuit Theory Of Operation

Hydrostatic Front Wheel Drive (HFWD) Circuit Theory Of Operation

Group 20: References And Tests

Diagnostic Trouble Code Reference List

Stored Diagnostic Trouble Code Retrieval

Troubleshooting Tips F301—F308 Transmission Gear Solenoid Codes

Troubleshooting Tips F309—F319 Transmission Gear Solenoid Codes

Troubleshooting Tips F317—F319 Inching Pedal Codes

HFWD Controller Diagnostic Trouble Codes Diagnostics

Transmission Diagnostic Trouble Code Diagnostics

Engine Diagnostic Trouble Code Diagnostics 770C, 770CH, 772CH (672CH, 670CH S.N. —589368 )

Engine Diagnostic Trouble Codes (DTCs) On Level 11 ECU (672CH, 670CH S.N. 589369— )

Engine Air Heat Controller Module (A7) Diagnostic Trouble Codes (670C) (If Equipped)

Battery Specifications

Electrical Component Specifications

Electrical Component Checks

Monitor Set Up

Calibrate Tachometer

Calibrate Transmission Controller (TCU)

Calibrate HFWD Controller (HCU)

Inching Pedal Calibration

Articulation Potentiometer Adjustment

Replacing Radio Memory Batteries (If Equipped)

Transmission Solenoid Resistance Test

HFWD Temperature Switch (B37) Test

Transmission Control And Park Brake Lever Test

Park/Not Neutral Gear Position Switch Module (S6) And Forward/Reverse Switch Module (S7) Bench Test

Check Controller

Replace METRI-PACK METRI-PACK is a trademark of Packard Electric Inc. Connectors

Replace DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Connectors

Replace DEUTSCH DEUTSCH is a trademark of Deutsch Co. Rectangular or Triangular Connectors

Install DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Contact

Replace WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Connector

Install WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Contact

Halogen Lights

Section 9016: Hydrostatic Front Wheel Drive (HFWD)

Group 05: Theory Of Operation

Hydrostatic Front Wheel Drive (HFWD) System Operation

HFWD Pump And Displacement Control Operation

Forward Operation

HFWD Pump And Motor Flushing Pump

HFWD Charge Pump

HFWD Charge Filter Operation

Flushing Valve and Operating Charge Relief Valve

Multi-Function Valve

Engagement Valve Operation

Front Wheel Motor Operation

HFWD Power Flow

Group 15: Diagnostic Information

Diagnose Malfunctions Of Hydrostatic Front Wheel Drive

HFWD System Schematic

HFWD Component Location

Group 20: Adjustments And Checks

HFWD Start-Up Procedure

HFWD Pump Control Neutral Adjustment

Group 25: Tests

Digital Thermometer Installation

Digital Pressure And Temperature Analyzer Installation

Digital Hydraulic Tester

Avoid High-Pressure Fluids

HFWD Oil Warm-Up Procedure

HFWD Planetary Brake Leakage Test

HFWD Neutral Charge Regulating Valve Pressure Test

HFWD Operating Charge Regulating Valve Pressure Test

HFWD Charge Pressure Balance Test

HFWD Pump Leakage Test

HFWD Motor Leakage Test

Pressure Override & Multi-Function Relief Valve Test—Forward and Reverse Directions

HFWD Motor Flushing Pump Relief Valve Test

HFWD Charge Pump Flow Test

Cooler Bypass Valve Pressure Test

Hydraulic Oil Filter Inspection Procedure

Section 9020: Power Train

Group 05: Theory Of Operation

Transmission Operation

Transmission Hydraulic System Operation

Transmission Control Valve Port Identification

Clutch Pack Operation

Clutch and Gear Operation and Component Location

First Forward

Park Brake and Differential Lock Control Valve

Park Brake Operation

Park Brake—Engaged

Park Brake Manual Release Operation

Differential Lock Operation

Rear Axle and Tandem Operation

Group 15: Diagnostic Information

Diagnose DF180 Powershift Transmission And Hydraulic Related Malfunctions

Diagnose Park Brake Malfunctions

Diagnose Differential Malfunctions

Power Train Component Location

Group 20: Adjustments

Manual Park Brake Release Procedure

Group 25: Tests

Transmission and Axle Oil Warm-Up Procedure

Differential Lock Valve Pressure Test

Differential Lock Valve Leakage Test

Axle Cooler Relief Pressure Test

Transmission Pump Flow Test

Transmission System Pressure Test

Lube Pressure Test

Transmission Control Circuit Pressure Test

Transmission Cooler Inlet Pressure Test

Park Brake Pressure Test

Park Brake Warm-Up Circuit

Relief/Valve Fitting Pressure Test (Park Brake)

Transmission Oil Filter Inspection Procedure

Transmission Accumulator Charge Pressure Test (S.N. —589369)

Transmission Pump Suction Tube Leak Test

Transmission Proportional Solenoid Valve Test

Section 9025: Hydraulic System

Group 05: Theory Of Operation

Main Hydraulic System Operation

Main Hydraulic Pump Operation

Main Hydraulic Return Filter Operation

System Relief Valve Operation

Service Brake Operation

Service Brake Operation—Multiple Disk

Brake Accumulator Operation

Steering System Operation

Priority Control Valve Operation

Grader Control Valve Operation

Control Valve Orifice Operation

Blade Lift, Scarifier And Ripper Valve Operation—Neutral

Wheel Lean, Rear Steer, Circle Side Shift, Blade Tilt, And Blade Side Shift Valve Operation

Counterbalance Valve Operation

Circle Rotate Valve Operation

Locking Pin Circuit Operation

Ripper Valve Operation

Circle Drive Gearbox Operation—Without Slip Clutch

Circle Drive Gearbox Operation—With Slip Clutch

Group 15: Diagnose Malfunctions

Diagnose Malfunctions Of Hydraulic System

Diagnose Malfunctions Of Steering System

Diagnose Service Brakes

Hydraulic Circuit Symbols

Main Hydraulic Schematic

Main Hydraulic Component Location

Group 20: Adjustments

Control Lever Pattern Change

Group 25: Tests

JT05800 Digital Thermometer Installation

JT02156A Digital Pressure And Temperature Analyzer Installation

JT07148 Digital Hydraulic Tester

Hydraulic Oil Warm-Up Procedure

Vacuum Pump Installation

Main Pump Standby Pressure Test

Main Hydraulic Pump Leakage Test

Main Pump Flow Test

Pump Destroke Spike Test

Priority Control Valve Pressure Test

System Relief Valve Pressure Test

Counterbalance Valve Pressure Test

Counterbalance Valve Leakage Test

Crossover Relief Valve Pressure Test

Cooler Bypass Valve Pressure Test—Non-HFWD

Brake Valve Pressure Test

Brake Accumulator Precharge Test

Brake Light Switch Test

Hydraulic Component Neutral Leakage Test

Hydraulic Cylinder Drift Test

Hydraulic Cylinder Leakage Test

Crossover Relief Valve Leakage Test

Rotary Manifold Leakage Test

Steering System Leakage Test

Brake Accumulator Inlet Check Valves Leakage Test

Hydraulic Oil Filter Inspection Procedure

Cycle Time Test

Section 9031: Heating And Air Conditioning

Group 05: Theory Of Operation

Air Conditioning System Cycle Of Operation

Group 15: Diagnostic Information

Diagnose Air Conditioning System Malfunctions

Diagnose Heater System Malfunctions

Heating/Air Conditioning Component Location

Group 25: Tests

Air Conditioning Operational Checks

R134a Air Conditioning System Test

Operating Pressure Diagnostic Chart

A/C Freeze Control Switch Test

A/C Compressor Clutch Test

A/C Low Pressure Switch Test

A/C High Pressure Switch Test

A/C Expansion Valve Test

Expansion Valve Bench Test

Refrigerant Leak Test

John Deere Motor Graders 670C, 670CH, 672CH, 770C, 770CH, 772CH Series II Operation and Test Service Manual (TM1914)