John Deere 670D, 672D, 770D, 772D, 870D, 872D Motor Grader Operation and Test Manual TM2246

John Deere operation and test technical manual TM2246 for the D-series motor graders: 670D, 672D, 770D, 772D, 870D and 872D. The 2 models (672D, 772D, 872D) are the six-wheel drive machines with hydrostatic front wheel drive (HFWD).

This is the diagnostic book. It explains how each system works and walks you through testing it. Engines are PowerTech 6.8 L (6068) and 8.1 L (6081).

Compatibility and quick facts

• Make: John Deere
• Models: 670D, 672D, 770D, 772D, 870D, 872D
• Book code: TM2246
• Engines: PowerTech 6.8 L (6068) and 8.1 L (6081)
• Transmission: DF180 series powershift
• Serial notes: Changes marked at S.N. 600758, 611296, 617280 and 619335
• Repair book: TM2256 (separate)
• Edition: 12 Jan 2015
• Manual type: Technical manual (operation and tests)
• Language: English
• Length: 852 pages
• Format: PDF, download link right after checkout

What is inside

• Operational checkout procedure
• Engine theory and diagnostic information
• Diagnostic trouble codes
• Electrical system: wiring diagrams and schematics for every harness
• Hydrostatic front wheel drive (HFWD) operation and tests
• Power train: DF180 transmission tests
• Hydraulic system: blade, circle, saddle and articulation circuits, with pressure tests
• Heating and air conditioning

Good to know before you buy

John Deere technical manuals are written for a trained mechanic. Each group opens with the special tools, specs, wear limits and torque values, then the steps.

This is the test and diagnosis half. For removal and rebuild steps you need the D-series repair manual TM2256.

Common questions

Does it have wiring diagrams?
Yes, with harness diagrams split by serial number where they changed.

Does it cover the HFWD system?
Yes, theory, checks and tests for the hydrostatic front wheel drive.