John Deere 670D, 672D, 770D, 772D, 870D and 872D Motor Grader Repair Technical Manual (TM2256)

John Deere 670D, 672D, 770D, 772D, 870D and 872D Motor Grader Repair Technical Manual (TM2256 30 JAN 15)

This technical repair manual delivers complete mechanical service procedures for John Deere D-series Motor Graders, including HFWD variants. Coverage spans drivetrain assemblies, transmission, axles, hydraulic circuits, engine systems, cab HVAC, brakes, steering, electrical components, and grading tools. The manual includes in-depth disassembly, adjustment procedures, torque values, and testing steps structured by functional systems.

Model Covers:

John Deere 670D, 672D, 770D, 772D, 870D, 872D Motor Graders

Graders models: 670D, 770D, 870D;

HFWD models 672D, 772D, 872D

File Format: PDF

Size: 16.85 MB

No. of pages: 434

Language: English

Delivery Method: Instant Download – Access your file immediately after purchase.

📑 Included Sections:

General Information and Torque Specs

• Extensive safety protocols and setup procedures
• Torque charts and service recommendations by fitting type

Axles and Drive Systems

• Powered/non-powered wheel hubs, U-joints, planetary drives
• HFWD motor, pump, charge manifold, differential lock system
• Rear axles, tandem shafts, drive chains, and isolation elements

Transmission and Braking Systems

• Funk transmission service and charge pump maintenance
• Park and service brake valve overhaul, accumulator checks

Engine and Cooling Components

• Removal/installation of 4.5L, 6.8L, and 8.1L PowerTech engines
• Cooling systems, fan hub, radiator, oil cooler, charge air cooler

Hydraulics and Steering

• Main hydraulic pump, manifolds, soft start valve
• Steering valve, cylinder repair, toe-in adjustment
• Cab steering controls and tilt assembly service

Operator Station and HVAC

• Cab removal, seat and belt systems, console disassembly
• R134a handling, A/C system flushing, compressor diagnostics

Grading and Frame Structure

• Blade control valve, scarifier, ripper, circle gearbox
• Lift arms, blade tilt, saddle lock and adjustment tools
• Welding procedures, engine/frame separation

For complete service information, also see:

670D, 672D, 770D, 772D, 870D, and 872D Motor Grader Diagnostic .......... TM2246
JDLink (MTG) Technical Manual .......... TM114519
PowerTech 8.1L Diesel Engines - Base Engine .......... CTM86
Alternators and Starting Motors .......... CTM77
TeamMate II 1200, 1400, and 1600 Series Inboard Planetary Axles .......... CTM43
DF230 Series Transmission .......... CTM362
Super Caddy Oil Cleanup Procedure .......... CTM310
DF180 Series Powershift Transmission Repair Manual .......... CTM308
PowerTech 8.1L Diesel Engines - Level 9 Electronic Fuel System with Denso High Pressure Common Rail .......... CTM255
PowerTech 4.5L & 6.8L Diesel Engines - Level 11 Electronic Fuel System with Denso HPCR .......... CTM220
120 Series Hydraulic Cylinders .......... CTM114319
PowerTech 4.5L & 6.8L Diesel Engines Tier 1/Stage I, Tier 2/Stage II, Tier 3/Stage IIIA, Tier 3/Stage IIA, Tier 3/Stage III (Base Engine) .......... CTM104
JDLink/ZXLink Machine Monitoring System .......... CTM10006

This John Deere D-Series Motor Grader Repair Manual is a professional reference for full teardown and diagnostics of complex grader systems, supporting workshop-level servicing accuracy.