1998-2005 Komatsu GD530A, GD530AW, GD650A, GD650AW, GD670A & GD670AW Series Motor Grader Shop Manual
Detailed repair and service procedures for Komatsu GD530A, GD530AW, GD650A, GD650AW, GD670A & GD670AW Series Motor Graders. Covers maintenance, diagnostics, and disassembly.
Komatsu Models Covered & Key Technical Specifications
Models: Komatsu GD530A, Komatsu GD530AW, Komatsu GD650A, Komatsu GD650AW, Komatsu GD670A, Komatsu GD670AW
Sub-models / Variants: 2-series, 2EY
Model Years: 1998–2005
Serial Numbers: GD530A(W)-2EY 210098 and up, GD650A(W)-2EY 210098 and up, GD670A(W)-2EY 210098
Technical Data:
-
Hydraulic system capacity (with All-Wheel-Drive): 31.0 gal (117.4 L)
-
Maximum bypass pressure limit: 40 PSI
-
Gearbox oil filtration requirement: 10 microns
-
Cable O.D. for specified circuits: 11.4 mm
-
Pressure compensator setting: 1650 ±25 PSI (116.0 ±1.8 kg/cm²)
-
Steering and brake pump rated speed: 2575 RPM
-
Steering and brake pump high idle speed: 2835 RPM
-
Hydraulic motor displacement: 19.6 GPM (74.2 L/min) @ 1800 RPM
Komatsu Manual Features & Content Preview
Technical Scope and Coverage
This official 2,800-page Komatsu OEM workshop manual provides comprehensive technical specifications and system diagrams for the 1998–2005 GD530, GD650, and GD670 series motor graders (specifically the 2-series and 2EY variants). As the definitive reference for these chassis builds, it delivers the exact torque tables, pressure values, and hydraulic block diagrams needed for accurate diagnostics and component overhauls in your shop.
Working on heavy machinery hydraulics involves high pressures and significant physical risks. Reviewing these factory-specified system overviews and routing diagrams ensures you understand the exact component layouts and pressure relief points before disconnecting any lines or removing valves.
Manual Organization and Content
The document details all major structural and functional systems of the machine. Beyond general dimensions and performance specifications, the manual provides extensive teardown and assembly views for the steering and brake pumps, All-Wheel-Drive (AWD) systems, control valve manifolds, and planetary final drives. It also outlines required pre-delivery procedures alongside detailed system overviews for both standard and AWD-equipped graders.
Technical Specifications Preview
This 2001 edition (P/N CEBM003901) is the only documented source for specific GD-2 series data required for routine maintenance. Crucial fluid capacities, pressure settings, and specifications included are:
- Hydraulic system capacity (AWD units): 31.0 gallons
- Gearbox oil filtration: 10-micron rated elements
- Steering and brake pump pressure compensator setting: 1650 PSI
- Service intervals: Recommended every 2,000 hours for major systems
- Indexed pressure and torque values for split flange bolts and flared nuts
Delivery and Format Features
- Instant download available immediately after checkout
- Contains over 470 exploded-view assembly diagrams and 396 specific chassis maintenance charts
- Fully indexed and searchable PDF covers every chapter and appendix
- Print-resolution formatting preserves fine details for shop copies
- File remains saved to your account for easy retrieval in case of a hard drive loss
Customer Reviews
Read what our customers say about this Komatsu Motor Grader manual and share your own experience.