John Deere 770c 770ch 772ch Motor Grader Diagnostic Service Manual

John Deere 770c 770ch 772ch Motor Grader Diagnostic Service Manual

John Deere 670c 670ch 672ch Motor Grader Diagnostic Manual

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

Foreword
Technical Information Feedback Form General Information

Safety

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

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 Back over Accidents, Avoid Machine Tip Over.

John Deere 770c 770ch 772ch Motor Grader Diagnostic Service Manual

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

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