John Deere 670G, 670GP, 672G and 672GP Motor Graders (SN: 634380-656507) with IT4/S3B Engine Operation and Test Manual (TM12135)

John Deere 670G, 670GP, 672G and 672GP Motor Graders Operation and Test Manual PDF (TM12135)

This factory Operation and Test Manual provides complete operating instructions, system testing procedures, and diagnostic guidance for John Deere 670G, 670GP, 672G, and 672GP Motor Graders equipped with IT4/Stage IIIB engines. Manual TM12135 is designed for technicians, operators, and service personnel responsible for accurate machine operation and performance testing.

The manual is structured by system and function, offering clear explanations of machine controls, operational checks, and step-by-step testing procedures. It supports safe operation, accurate fault diagnosis, and correct system evaluation to maintain peak grader performance and reliability.

Models Covered:

John Deere 670G Motor Grader
John Deere 670GP Motor Grader
John Deere 672G Motor Grader
John Deere 672GP Motor Grader

Serial Number Range:

SN: 634380 – 656507

Engine Coverage:

IT4 / Stage IIIB Engine

Manual Coverage Includes:

• General Safety and Operating Guidelines
• Machine Identification and Specifications
• Operator Controls and Instrumentation
• Engine Operation and Performance Testing
• Fuel System Operation and Test Procedures
• Air Intake, Exhaust, and Emissions Systems
• Cooling System Operation and Diagnostics
• Transmission Operation and Functional Testing
• Powertrain System Checks and Adjustments
• Hydraulic System Operation and Pressure Testing
• Main Pumps, Valves, and Circuit Testing
• Steering, Brake, and Articulation System Tests
• Electrical System Operation and Diagnostics
• Electronic Control Units and Sensor Testing
• Calibration and Adjustment Procedures
• Machine Performance Troubleshooting Guides

Format and Access Features:

• Instant Digital PDF Download
• Language: English
• Fully Searchable and Indexed
• High-Quality Schematics and Illustrations
• Printable Pages for Workshop or Field Use
• Compatible with Windows, macOS, Tablets, and Smartphones
• Clear Navigation for Efficient Diagnostics

Why This Operation and Test Manual Is Important:

• Provides factory-approved operating and testing procedures
• Ensures accurate diagnosis before repair work
• Helps maintain engine and system efficiency
• Reduces downtime through correct troubleshooting
• Essential reference for operators and service technicians
• Supports compliance with IT4 / Stage IIIB standards

The John Deere 670G, 670GP, 672G and 672GP Motor Graders Operation and Test Manual PDF (TM12135) is a critical resource for safe operation, precise testing, and reliable machine performance.

Download the John Deere TM12135 Operation and Test Manual PDF for immediate access to official factory documentation.

Frequently Asked Questions (FAQ)

Q: What is the purpose of the TM12135 manual?

A: TM12135 provides operating instructions and detailed test procedures to diagnose and evaluate machine systems.

Q: Which motor grader models are included?

A: The manual covers John Deere 670G, 670GP, 672G, and 672GP motor graders.

Q: What serial number range does this manual apply to?

A: It applies to machines with serial numbers from 634380 to 656507.

Q: Does this manual include engine diagnostics?

A: Yes, it includes IT4/Stage IIIB engine operation checks and performance testing.

Q: Are hydraulic and transmission tests included?

A: Yes, complete hydraulic and powertrain operation and test procedures are covered.

Q: Does the manual include electronic diagnostics?

A: Yes, electronic control systems, sensors, and calibration procedures are included.

Q: Is this manual suitable for professional workshops?

A: Yes, it is intended for operators, dealer technicians, and independent service professionals.

Q: Can the PDF be printed?

A: Yes, the manual is fully printable for workshop or field reference.