John Deere 870G, 870GP, 872G and 872GP Motor Graders (SN: 634754-656508) with S2, S3A Engines Repair Manual (TM12146)

John Deere 870G, 870GP, 872G and 872GP Motor Graders Repair Manual PDF (TM12146)

This factory Repair Manual provides full repair, overhaul, and component-level service procedures for John Deere 870G, 870GP, 872G, and 872GP Motor Graders equipped with S2 and S3A engines. Manual TM12146 is designed for professional technicians, dealer service teams, and heavy equipment maintenance specialists who require precise factory repair instructions.

Organized by system and component, the manual offers step-by-step disassembly, inspection, repair, and reassembly instructions. It includes exact specifications, torque values, service limits, and adjustment data to ensure accurate repairs, reduced downtime, and reliable grader performance.

Models Covered:

John Deere 870G Motor Grader
John Deere 870GP Motor Grader
John Deere 872G Motor Grader
John Deere 872GP Motor Grader

Serial Number Range:

SN: 634754 – 656508

Engine Coverage:

S2 and S3A Engines

Manual Coverage Includes:

• General safety procedures and machine identification
• Technical specifications, service data, and wear limits
• Engine disassembly, repair, and rebuild procedures
• Fuel system inspection, testing, and calibration
• Air intake, aftertreatment, and exhaust system service
• Cooling system diagnostics and maintenance
• Transmission, differential, and powertrain repairs
• Tandem, axle, and final drive overhaul procedures
• Hydraulic system diagnostics, repair, and pressure testing
• Main pumps, control valves, and hydraulic circuit servicing
• Steering, frame, and articulation system repairs
• Brake system inspection, repair, and adjustment
• Electrical system troubleshooting and wiring diagrams
• Electronic controllers, sensors, and calibration procedures
• 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 workshop or field use
• Compatible with Windows, macOS, tablets, and smartphones
• System-based layout for quick repair reference

Why This Repair Manual Is Valuable:

• Factory-approved repair and overhaul procedures
• Supports precise diagnostics and component servicing
• Reduces downtime and repeat repair issues
• Ensures repairs meet John Deere factory standards
• Essential for major repairs and full machine rebuilds
• Reliable reference for S2 and S3A engine platforms

The John Deere 870G, 870GP, 872G and 872GP Motor Graders Repair Manual PDF (TM12146) provides the professional technical detail needed for dependable repairs and long-term grader performance.

Download the John Deere TM12146 Repair Manual PDF for instant access to official factory service documentation.

Frequently Asked Questions (FAQ)

Q: What is the purpose of the TM12146 manual?

A: TM12146 provides factory-approved repair, overhaul, and component servicing procedures for motor graders.

Q: Which John Deere motor grader models are covered?

A: The manual covers John Deere 870G, 870GP, 872G, and 872GP motor graders.

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

A: It applies to machines with serial numbers from 634754 to 656508.

Q: Which engines are included in this repair manual?

A: The manual covers graders equipped with S2 and S3A engines.

Q: Does this manual include hydraulic and powertrain repairs?

A: Yes, it includes complete hydraulic system, transmission, axle, and powertrain repair procedures.

Q: Are electrical and electronic systems covered?

A: Yes, wiring diagrams, electronic diagnostics, and calibration procedures 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 shop use?

A: Yes, all pages are fully printable for workshop or on-site reference.