John Deere 670A, 672A Motor Grader TM1188 (Repair Technical Manual)

Workshop Technical Manual: John Deere 670A & 672A Motor Grader (TM1188)

Equipment Identification:

Machine Models Covered: 
670A Motor Grader (Standard Drive) 
672A Motor Grader (All-Wheel Drive / AWD)

Power Plant Integration: John Deere 6-Cylinder Turbocharged Diesel Engine

Drivetrain & Control Layout: Direct-drive Power Shift transmission (8 forward, 4 reverse speeds); planetary final drives; hydraulic differential lock; hydraulic front wheel lean, articulation, and blade circle drive assemblies.

Manual Volume: 774 Pages

Manual Details:

PDF File Size : 102 MB
Document Number: TM1188 
Format: PDF Digital Download
Manual Language: English
Supported Devices : PC, Mac, iOS, Android
Delivery : Instant access after purchase
File Format : PDF — Downloadable

Product Description:

The TM1188 Repair Technical Manual is a comprehensive workshop guide for the John Deere 670A and 672A Motor Graders. It provides detailed information on maintenance, troubleshooting, diagnostics, inspections, testing, overhaul procedures, and repair instructions to help technicians and equipment owners maintain reliable machine performance.

This John Deere 670A Motor Grader Service Manual PDF and John Deere 672A Repair Manual covers engine systems, hydraulic systems, transmission components, steering systems, brake systems, electrical systems, grader blade controls, wiring diagrams, and technical specifications. Detailed illustrations and step-by-step service procedures help users diagnose faults and perform repairs efficiently.

With 774 pages of technical information, TM1188 is an essential resource for maintenance, diagnostics, component rebuilding, and professional repair work on John Deere motor graders.

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: 

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: What type of information is included in the TM1188 manual?
Ans: The manual contains repair procedures, maintenance instructions, troubleshooting guides, technical specifications, and system service information.

Q: Does the manual include hydraulic and electrical system repairs?
Ans: Yes, it covers hydraulic circuits, electrical components, wiring diagrams, and diagnostic procedures for major grader systems.

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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