
KOMATSU GD610, GD620, GD660, GD670 Series MOTOR GRADER Service Repair Manual



This is the official service repair manual for the KOMATSU GD610, GD620, GD660, GD670 SERIES MOTOR GRADER. It contains comprehensive information about maintaining, assembly, disassembly, and servicing your machine. The manual includes specs, diagrams, real photo illustrations, and schemes, providing step-by-step operations on repair, servicing, technical maintenance, and troubleshooting procedures.
The manual covers the following machine model serial numbers:
- GD621A-1 - S/N: 10001 and up
- GD622A-1 - S/N: 20001 and up
- GD623A-1 - S/N: 30001 and up
- GD625A-1 - S/N: 50001 and up
- GD672A-1 - S/N: 20001 and up
- GD611A-1 - S/N: 10001 and up
- GD613A-1 - S/N: 30001 and up
- GD661A-1 - S/N: 10001 and up
- GD663A-1 - S/N: 30001 and up
- GD621R-1 - S/N: 10001 and up
- GD623R-1 - S/N: 30001 and up
- GD611R-1 - S/N: 10001 and up
- GD613R-1 - S/N: 30001 and up
- GD615A-1 - S/N: 50001 and up
- GD625A-1C - S/N: 60001 and up
- GD625A-1A - S/N: 60001 and up
- GD625A-1B - S/N: 65001 and up
Specific engine details are as follows:
- GD621A, GD611A, GD661A, GD621R, GD623R, GD611R, GD613R-1 mount the S6D105-1 engine.
- GD622A, GD623A, GD625A, GD672A, GD613A, GD663A, GD625A-1C, GD625A-1A mount the 6D125-1 engine.
- GD615A-1 mounts the S6D110-1 engine. For more details, refer to the respective Shop Manuals.
The manual's table of contents includes:
- 10 ENGINE
- 20 POWER TRAIN
- 40 STEERING SYSTEM
- 50 BRAKE SYSTEM
- 60 HYDRAULIC SYSTEM
- 70 WORK EQUIPMENT
- 80 ELECTRIC AND ELCTRONIC SYSTEM
- 90 OTHERS
Additional details:
- Model Specification: KOMATSU GD610, GD620, GD660, GD670 SERIES MOTOR GRADER
- Language: English
- Total Pages: 698
- File Format: PDF
- Requirements: Adobe Reader & Win
- Zoom In/Out: Yes
- Instant Delivery: Yes
- Specifications: Fully Printable & Bookmarked
- Compatible: All Versions of Windows & Mac
This comprehensive manual is complete and intact, with no missing or corrupt pages/sections. It is bookmarked and searchable for easy access to the required information. Detailed illustrations, exploded diagrams, drawings, and photos guide you through every service repair procedure. The manual is viewable on any computer, zoomable, and printable. It is in PDF format, compatible with all PC-based Windows operating systems and Mac. You can save it to your hard drive or burn it to CD-ROM for convenience. Instant delivery means no shipping costs or waiting for a physical manual. You can perform the repairs yourself and save money.