John Deere 670G, 670GP, 672G and 672GP Motor Graders (SN: 634380-656507) with iT4/S3B Engines Repair Manual (TM12137)

John Deere 670G, 670GP, 672G and 672GP Motor Graders Repair Manual PDF (TM12137)

This factory Repair Manual delivers complete technical repair and overhaul procedures for John Deere 670G, 670GP, 672G, and 672GP Motor Graders equipped with iT4 and S3B engines. Manual TM12137 is designed for professional technicians, workshop engineers, and heavy equipment service specialists who require accurate factory repair data.

Structured by system and component, the manual provides step-by-step disassembly, inspection, repair, and reassembly procedures. Detailed specifications, service limits, and diagnostic information help ensure correct repairs, extended component life, and dependable grader performance in demanding jobsite conditions.

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 and S3B Engines

Manual Coverage Includes:

• General Safety Information and Machine Identification
• Specifications, Service Data, and Wear Limits
• Engine Removal, Disassembly, and Overhaul Procedures
• Fuel System Testing, Adjustment, and Repair
• Air Intake, Aftertreatment, and Exhaust System Servicing
• Cooling System Component Repair and Diagnostics
• Transmission and Powertrain Repair Procedures
• Axles, Tandems, and Final Drive Servicing
• Hydraulic System Repair, Testing, and Adjustments
• Main Pumps, Control Valves, and Hydraulic Circuits
• Steering, Frame, and Articulation System Repairs
• Brake System Inspection, Repair, and Adjustment
• Electrical System Troubleshooting and Wiring Diagrams
• Electronic Controllers, Sensors, and Calibration Data
• Torque Values, Clearances, and Assembly Specifications

Format and Access Features:

• Instant Digital PDF Download
• Language: English
• Fully Searchable and Indexed Manual
• High-Resolution Technical Diagrams and Schematics
• Printable Pages for Shop or Field Repairs
• Compatible with Windows, macOS, Tablets, and Smartphones
• Organized Layout for Faster Repair Reference

Why This Repair Manual Is Essential:

• Factory-authorized repair and overhaul procedures
• Supports accurate diagnostics and correct component replacement
• Reduces downtime by following proven repair methods
• Ensures compliance with John Deere service standards
• Ideal for major repairs, rebuilds, and long-term maintenance
• Reliable reference for iT4 and S3B engine platforms

The John Deere 670G, 670GP, 672G and 672GP Motor Graders Repair Manual PDF (TM12137) provides the detailed technical guidance required for professional servicing, complete repairs, and long-term machine reliability.

Download the John Deere TM12137 Repair Manual PDF to access official factory repair documentation instantly.

Frequently Asked Questions (FAQ)

Q: What type of manual is TM12137?

A: TM12137 is a factory repair manual focused on complete repair, overhaul, and component-level servicing.

Q: Which motor grader models are covered?

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

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

A: This manual applies to graders with serial numbers from 634380 to 656507.

Q: Which engines are supported in this repair manual?

A: The manual includes repair procedures for iT4 and S3B engine configurations.

Q: Does the manual include hydraulic and powertrain repairs?

A: Yes, it provides full hydraulic system, transmission, axle, and powertrain repair procedures.

Q: Are electrical and electronic systems covered?

A: Yes, wiring diagrams, electronic diagnostics, and controller calibration information are included.

Q: Is this manual suitable for professional workshops?

A: Yes, it is written for dealer technicians, independent repair shops, and experienced service professionals.

Q: Can the PDF be printed for workshop use?

A: Yes, all pages are printable for convenient shop or on-site reference.