Sumitomo SH700LHD-3B Hydraulic Excavator Technical Service Manual Download

Description

Sumitomo SH700LHD-3B Technical Service Manual

This comprehensive Sumitomo SH700LHD-3B Technical Service Manual is the definitive resource for professional mechanics, technicians, and owners who demand accurate, factory-sourced information for the maintenance, repair, and overhaul of their hydraulic excavator. Covering the complete machine inside and out, this manual provides the detailed procedures, specifications, and diagnostic support necessary to keep your SH700LHD-3B operating at peak performance. Whether you are tackling a major hydraulic rebuild, troubleshooting a complex electrical fault, or performing routine maintenance, this manual delivers the exact technical data you need, straight from the manufacturer’s engineering documentation.

File Details

• Manual Type: Technical Service Manual
• Brand: Sumitomo
• Model: SH700LHD-3B
• Document Number: WLST700LHD3B-00W
• Language: English
• Page Count: 317 Pages
• File Format: PDF
• Edition: First Edition
• Date: 03/2006

Chapters Covered

• Specifications
• Major Equipment Specifications
• Hydraulic Section
• Hydraulic Circuits Section
• Electric Circuits Section
• Maintenance Section
• Assembly, Disassembly Section
• Appendix

Specifications & Major Equipment

The manual opens with a detailed breakdown of the SH700LHD-3B‘s complete machine dimensions, work ranges for the standard (3.55 m), short (3.00 m), long (4.11 m), and super long (5.00 m) arms, and a full list of optional components. You will find the exact operating weight of 68,100 kg, engine output of 345 kW / 1800 min-1, bucket capacity of 2.90 m³ heaped, and travel speeds. Major equipment specifications dive deep into the lower mechanism, travel unit (variable displacement piston motor with parking brake), swing unit (fixed displacement piston motor), and the engine and related areas. This section is essential for verifying part numbers, understanding the layout of the machine, and ensuring you have the correct baseline data before starting any repair. The engine, an ISUZU 6WG1X, is detailed with its common rail injection system, cooling system capacities, and major component weights.

Hydraulic Section

At the heart of the Sumitomo SH700LHD-3B is its sophisticated hydraulic system, and this manual dedicates significant space to its operation and internal structure. You will find detailed operation principles for the hydraulic pump, control valve, swing unit, travel unit, and the fan motor for hydraulic drive. Each component is broken down with internal structure drawings, making it easier to understand how the main relief valve, overload relief valve, foot relief valve, load holding valve, arm regenerative circuit, priority valve, and boom regenerative circuit function. This section is invaluable for diagnosing sluggish performance, unusual noises, or hydraulic leaks. The manual explains the operation of the double variable displacement piston pump and the gear pump, including their control methods and set pressures for the main relief valve (31.4 MPa standard, 34.3 MPa power boost) and overload relief valves.

Hydraulic Circuits Section

Understanding the flow of hydraulic oil is critical for effective troubleshooting. This section provides complete hydraulic circuit diagrams and port locations for the hydraulic pump and control valve. You will find pilot hose connection diagrams, functional tables, and detailed circuit explanations for travel (high speed, low speed, straight travel), swing (parking, push digging), arm (in/out, load holding), boom (up/down, load holding, regenerative), and backup circuits (breaker, high speed confluence). The high dump circuit, cushion circuit, auto power boost, and negative control are also covered, giving you a complete picture of how every hydraulic function interacts. The manual includes specific circuit diagrams for the travel motor, swing motor, and control valve spools, allowing you to trace oil flow through every operation.

Electric Circuits Section

The electrical system of the SH700LHD-3B is complex, and this manual provides the operation explanation you need to understand it. It covers engine control, work mode selection (H.S.L modes, Auto modes), throttle control, idling control (auto/one-touch), breaker mode, auto preheat (glow control), auto warm-up, overheat protection, and atmospheric pressure compensation. You will also find detailed information on the engine protection function (EPF), lever lock, auto boost control, swing lock, swing brake control, travel speed switch-over, travel alarm, and power shut-off delay. The hydraulic driven fan control, fuel supply pump control (option), and power transistor protection are explained. The monitor display functions, service support (trouble diagnosis, usage history, reset, machine information), and error display functions are covered in detail. Electric wiring diagrams and harness diagrams provide the road map for tracing faults, including the frame main harness and cab main harness.

Maintenance Section

Keep your machine in top condition with the comprehensive maintenance section. It includes new machine performance checks, reference values for engine speed, pressure of each part, natural lowering level of cylinders, operational speed, swing speed, travel speed, and shoe tension. Detailed instructions for measuring and adjusting pressure are provided, including the setup of pressure gauges, measuring ports, and adjustment points for the control valve, hydraulic pump, and swing motor. You will find the maintenance schedule for the circumference of the engine, including fuel filter arrangements and fuel element system diagrams, with replacement intervals for the pre-filter (every 250 hours) and main filter (every 500 hours). Main body weights, individual part weights, and attachment dimensions are provided for safe lifting and handling. The procedures for changing the operation type (ISO, Old Sumitomo, Old Mitsubishi, Old Kobelco) are also included, allowing you to adapt the machine’s controls to your preferred pattern.

Assembly, Disassembly Section

For major overhauls or transport, this section is indispensable. It provides a summary of assembling and disassembling procedures, including the total work process, major machines and tools required, and matters to be attended. You will find step-by-step instructions for unloading, connecting lower sideframes to the upper swing body, mounting travel motor lines, mounting the counterweight, and mounting attachments (boom cylinders, boom, arm, bucket). The detailed procedures for checking work and confirming movement after assembling ensure that every rebuild is done right the first time. The attached data includes assembly drawings for the stool, lower frame, piping cover, traction motor line, counterweight, catwalk, house assembly, and attachment assembly.

Appendix

The appendix includes a unit conversion table (SI units, gravitational units) and specifications for new hydraulic oil (IDEMITSU Daphne Super Hydro 46SX), including its features and test results, ensuring you have all the reference data you need for accurate measurements and fluid selection.

Why You Need This Manual

Owning the Sumitomo SH700LHD-3B Technical Service Manual is like having a master technician by your side. It provides the exact specifications, torque values, and diagnostic procedures that are often omitted from generic repair guides. With this manual, you can confidently tackle engine diagnostics, hydraulic pump repairs, swing motor overhauls, and electrical troubleshooting. The detailed wiring diagrams and hydraulic schematics alone are worth the investment, saving you hours of guesswork and preventing costly mistakes. Whether you are a seasoned professional or a dedicated owner-operator, this manual empowers you to perform repairs correctly and efficiently, extending the lifespan of your equipment.

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This SH700LHD-3B repair manual is delivered as a high-quality PDF file, available for instant download immediately after payment. No waiting for shipping, no risk of lost packages. You can access it on any device—laptop, tablet, or smartphone—and print out the pages you need for the workshop. The PDF format allows you to zoom in on intricate diagrams and search for specific keywords, making your repair work faster and more accurate. Get your copy today and take the first step toward mastering your Sumitomo excavator.