Komatsu SA6D140E-3 Diesel Engine Factory Service Manual (P/N SEBM022209)

• 47 exploded-view diagrams for part orientation
• 16 maintenance specification tables
• 12 engine performance curves for varying load outputs

Document Reference: SEBM022209, printed in Japan 11-03 (01)

This 361-page factory service manual serves as the primary technical reference for the 2003 Komatsu 140-3 series launch build. Designed for heavy equipment technicians and shop mechanics, the publication covers the SA6D140E-3, SAA6D140E-3, and SDA6D140E-3 diesel engines used across excavators, wheel loaders, bulldozers, and generator sets. Crucially, it documents specific electronic control common rail system parameters that remain unavailable in earlier editions.

Engine Configuration and System Documentation

The documentation provides a complete component breakdown of the 140-3 engine family. It details the exact structure and function of the common rail fuel injection system, turbocharging components, cooling circuits, and lubrication oil networks. Chapters clearly outline factory procedures for inspection, teardown, and reassembly. It also lists the specific maintenance standards required to evaluate parts for wear before deciding on a replacement. Technical coverage extends to cylinder head and block assemblies, piston and connecting rod tolerances, camshaft configurations, and complete cooling system layouts. Since modern common rail systems operate under extreme pressure, technicians must review the integrated system warnings and relieve fuel pressure prior to opening any lines.

Performance Specifications and Data Preview

Reliable engine rebuilding requires exact numbers. This manual provides comprehensive reference values for both identification and assembly. You will find torque settings for all primary fasteners, including head bolts using the plastic region tightening method, alongside specifications for flared nuts and hose couplings. Fluid capacity tables cover lubricating oil and cooling water volumes tailored to specific machine models, mapping out 42 liters of lubricating oil for the SA6D140E-3, for example. The document lists sensor reference values for electronic systems to help efficiently troubleshoot diagnostic codes. It also includes valve clearance thresholds, piston ring gaps, and crankshaft journal diameters. As a quick reference preview, the cylinder head bolt torque for this series requires 147 Nm plus an additional 90-degree turn for the final stage, and the low idling speed for the PC600-6 is set at 725 ± 25 rpm.