
John Deere 670A, 672A Motor Grader Diagnostic Manual | TM1188op
- Type Of Document: Operation and Test Manual
- Type of equipment: Motor Grader
- Model: 670A, 672A
- John Deere
John Deere 670A and 672A Motor Graders Repair Manual TM1188re

Table of Contents

- Introduction
- General Information
- General Specifications
- Lubrication
- System Testing
- General Information – Seven Basic Steps of Diagnosis and Testing
- Engine
- General Information
- Diagnosing Malfunctions
- Visual Inspection
- Testing and Adjustment
- Electrical System
- General Information
- Hydraulic Front Wheel Drive
- General Information
- Component Location
- Component General Information
- System Operation
- Pre-Test Information
- HFWD Start Up Procedure
- Test Equipment and Test Procedures
- Test Procedure I
- Test Procedure II
- Test Procedure III
- Test Procedure IV
- Power Train
- General Information
- Component Location
- Power Train Block Diagram
- General Information
- Power Flows
- Diagnosing Malfunctions
- Visual Inspection
- Testing and Adjustment
- Hydraulic System (Flow Meter)
- Component Location
- Hydraulic Schematic
- General Information
- Diagnosing Malfunctions
- Visual Inspection
- Testing and Adjustment
- Hydraulic System (Analyzer)
- General Information
- Pretest Inspection and Operational Checks
- Pretest Check Sheet
- Symptom Index
- Testing and Adjustment
- List of Parts for Tests
- Miscellaneous Components
- Adjustment
- Heating and Air Conditioning
- Heating System
- Air Conditioning System
- Specifications and Special Tools
- Engine
- Electrical System
- Hydraulic Front Wheel Drive
- Power Train
- Hydraulic System (Flow Meter)
- Hydraulic System (Analyzer)
- Miscellaneous Components
- Heating and Air Conditioning



