John Deere 670A, 672A Motor Grader Repair Technical Manual TM1188 - PDF Download

Download - 670A, 672A Motor Grader Repair Technical Manual TM1188 PDF

When the John Deere 670A or 672A Motor Grader demands serious repair work — whether it is a complete hydraulic pump overhaul, a powershift transmission rebuild, a full engine overhaul, a tandem drive chain and sprocket replacement, a circle drive system repair, an articulated steering overhaul, or a detailed electrical system repair — there is only one reference that delivers the complete factory knowledge required to do every job correctly the first time. The John Deere 670A and 672A Motor Grader Technical Service Repair Manual TM1188 delivers 774 pages of detailed factory repair procedures, precise engineering specifications, complete hydraulic schematics, full electrical wiring diagrams, and comprehensive component overhaul guidance covering every repairable system on both motor grader variants in a single authoritative factory reference. From the engine compartment to the tandem drives, from the hydraulic pump to all blade positioning cylinders, from the powershift transmission to the circle drive and complete electrical system — TM1188 has the correct factory repair procedure for every job on both the John Deere 670A and 672A Motor Graders.

The Official Factory Repair Manual

TM1188 is the original technical service repair manual written and published directly by John Deere for the 670A and 672A Motor Graders. Every torque specification, component clearance, hydraulic pressure value, bearing preload setting, seal installation procedure, wear limit specification, and repair step in this manual comes straight from John Deere engineering data — the same factory reference relied upon by authorized John Deere dealer workshops worldwide.

The John Deere 670A and 672A are closely related motor grader variants sharing a common platform, powertrain, and blade system while offering different configuration options to suit different road grading and earthmoving application requirements. The 670A is the standard motor grader configuration delivering excellent productivity for road maintenance, construction grading, and material spreading operations. The 672A steps up with additional features or configuration options providing enhanced capability for more demanding applications. Both machines feature proven John Deere diesel engines, smooth powershift transmissions, precise hydraulic blade positioning systems, the circle drive system for accurate blade angle control, tandem rear drives, and articulated steering. TM1188 covers both variants in complete factory repair detail with model-specific specifications differentiated throughout the 774-page manual.

670A, 672A Manual Details:

PDF File Size : 102 MB
Total pages : 774
Document Number: TM1188 
Model : 670A, 672A Motor Grader 
Format: PDF Digital Download
Manual Language: English
Supported Devices : PC, Mac, iOS, Android
Delivery : Instant access after purchase
File Format : PDF — Downloadable

What's Inside TM1188 - Manual Contents:

SECTION I - GENERAL INFORMATION
Group I - Contents (not used)
Group II - Introduction and Safety Information
Group III - General Specifications
Group IV - Predelivery, Delivery and After-Sales
Services
Group V - Lubrication
SECTION 1 - WHEELS
Group 0110 - Powered Wheels and Fastenings
Group 0120 - Non-Powered Wheels and
Fastenings
Group 0199 - Specifications and Special Tools
SECTION 2 - AXLES AND SUSPENSION SYSTEMS
Group 0201 - Drive Axle Housing and Support
Group 0210 - Differential or Bevel Drive
Group 0250 - Axle Shafts, Bearing and
Reduction Gears
Group 0260 - Hydraulic System
Group 0299 - Specifications and Special Tools
SECTION 3 - TRANSMISSION
Group 0315 - Controls
Group 0341 - Housings and Covers
Group 0350 - Gears, Shafts, Bearings and
Power Shift Clutch
Group 0360 - Hydraulic System
Group 0370 - Clutch Disconnect and Controls
Group 0399 - Specifications and Special Tools
SECTION 4 - ENGINE
Group 0400 - Removal and Installation
Group 0422 - Starting Motor and Fastenings
Group 0499 - Specifications and Special Tools
SECTION 5 - ENGINE AUXILIARY SYSTEMS
Group 0505 - Cold Weather Starting Aids
Group 0510 - Cooling Systems
Group 0515 - Speed Controls
Group 0520 - Intake System
Group 0540 - Mounting Frame
Group 0560 - External Fuel Supply Systems
Group 0599 - Specifications and Special Tools
SECTION 8 - TRANSFER DRIVE
Group 0841 - Housings and Covers
Group 0851 - Gears, Shafts, Bearings
Group 0899 - Specifications and Special Tools
SECTION 9 - STEERING SYSTEM
Group 0920 - Power Steering
Group 0960 - Hydraulic System
Group 0999 - Specifications and Special Tools
SECTION 10 - SERVICE BRAKES
Group 1011 - Active Elements
Group 1015 - Controls Linkage
Group 1060 - Hydraulic System
Group 1099 - Specifications and Special Tools
SECTION 11 - PARKING-EMERGENCY BRAKES
Group 1111 - Active Elements
Group 1115 - Controls Linkage
Group 1199 - Specifications and Special Tools
SECTION 15 - EQUIPMENT ATTACHING
Group 1511 - Drawbar
Group 1599 - Specifications and Special Tools
SECTION 16 - ELECTRICAL SYSTEMS
Group 1671 - Batteries, Support and Cables
Group 1672 - Alternator, Regulator and
Charging System Wiring
Group 1673 - Lighting System
Group 1674 - Wiring Harness and Switches
Group 1675 - System Controls
Group 1676 - Instruments and Indicators
Group 1699 - Specifications and Special Tools
SECTION 17 - FRAME, CHASSIS OR SUPPORTING
STRUCTURE
Group 1740 - Frame Installation
Group 1746 - Frame Bottom Guards
Group 1747 - Bumpers, Vehicle
Group 1799 - Specifications and Special Tools
SECTION 18 - OPERATORS STATION
Group 1810 - Operator Enclosure
Group 1821 - Seat and Seat Belt
Group 1822 - Steps and Handholds
Group 1830 - Heating and Air Conditioning
Group 1899 - Specifications and Special Tools
SECTION 19 - SHEET METAL AND STYLING
Group 1910 - Hood or Engine Enclosure
Group 1913 - Miscellaneous Shields
Group 1921 - Grille and Grille Housing
SECTION 20 - SAFETY, CONVENIENCE AND
MISCELLANEOUS
Group 2002 - Mirror
Group 2003 _ Fire Extinguisher
Group 2004 - Horn
Group 2006 - Cigar Lighter
SECTION 21 - MAIN HYDRAULIC SYSTEM
Group 2160 - Hydraulic System
Group 2199 - Specifications and Special Tools
SECTION 34 - GRADING DEVICE
Group 3401 - Blade
Group 3415 - Controls Linkage
Group 3440 - Frames
Group 3450 - Circle Gear Box
Group 3460 - Hydraulic System
Group 3499 - Specifications and Special Tools
SECTION 42 - GROUND CONDITIONING TOOL
Group 4201 - Blades, Teeth, Shanks, Etc.
Group 4215 - Controls Linkage
Group 4240 - Frames
Group 4260 - Hydraulic System
Group 4299 - Specifications and Special Tools

FAQ: 670A, 672A Motor Grader (TM1188)

Q: What machines does TM1188 cover?
A: It covers both the John Deere 670A and 672A Motor Graders in complete factory repair detail within a single 774-page manual covering all major systems on both variants.

Q: How many pages does TM1188 contain?
A: The manual contains 774 pages of complete factory repair, overhaul, hydraulic, electrical, tandem drive, circle drive, powershift transmission, axle, and diagnostic information for both motor grader variants.

Q: Is this the official John Deere factory repair manual?
A: Yes. TM1188 is the original technical service repair manual published directly by John Deere with factory-accurate engineering and repair data for the 670A and 672A Motor Graders.

Q: What format is available and when will I receive it?
A: Available as a PDF digital download with instant access immediately after purchase on PC, Mac, iOS and Android.

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