John Deere 870G, 870GP, 872G and 872GP Motor Graders (SN: 634380-656507) with iT4/S3B Engines Repair Manual (TM12145)

John Deere 870G, 870GP, 872G and 872GP Motor Graders Repair Manual PDF (TM12145)

This factory Repair Manual provides complete repair, overhaul, and component-level service procedures for John Deere 870G, 870GP, 872G, and 872GP Motor Graders equipped with iT4 and S3B engines. Manual TM12145 is designed for professional technicians, dealer service departments, and heavy equipment maintenance specialists who need accurate factory repair information.

Organized by system and component groups, the manual delivers step-by-step disassembly, inspection, repair, and reassembly instructions. It includes precise specifications, torque values, service limits, and adjustment data to support proper repairs, reduce downtime, and ensure 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: 634380 – 656507

Engine Coverage:

iT4 and S3B Engines

Manual Coverage Includes:

• General Safety Practices and Machine Identification
• Technical Specifications, Service Data, and Wear Limits
• Engine Repair, Disassembly, and Overhaul Procedures
• Fuel System Inspection, Testing, and Component Repair
• Air Intake, Aftertreatment, and Exhaust System Servicing
• Cooling System Diagnostics and Component Maintenance
• Transmission, Differential, and Powertrain Repairs
• Tandem, Axle, and Final Drive Overhaul Procedures
• Hydraulic System Repair, Pressure Testing, and Adjustments
• 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 Fast Repair Reference

Why This Repair Manual Is Important:

• Factory-approved repair and overhaul procedures
• Supports accurate diagnostics and correct component servicing
• Reduces downtime and repeat repair issues
• Ensures repairs meet John Deere service standards
• Essential for major repairs and complete machine rebuilds
• Reliable reference for iT4 and S3B engine platforms

The John Deere 870G, 870GP, 872G and 872GP Motor Graders Repair Manual PDF (TM12145) provides professional-level technical guidance for dependable repairs and long-term machine reliability.

Download the John Deere TM12145 Repair Manual PDF today for immediate access to official factory service documentation.

Frequently Asked Questions (FAQ)

Q: What is the purpose of the TM12145 manual?

A: TM12145 is a factory repair manual providing complete repair, overhaul, and component servicing procedures for motor graders.

Q: Which John Deere grader models are covered?

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

Q: What serial numbers does this manual apply to?

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

Q: Which engines are included in this repair manual?

A: The manual covers graders equipped with iT4 and S3B engines.

Q: Does this manual include hydraulic and powertrain repairs?

A: Yes, it includes full 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.