Sumitomo SH330-6, SH330LC-6, SH350HD-6, SH350LHD-6 Hydraulic Excavator Pdf Service Manual (WLSM3306-02W)

Sumitomo SH330-6 / SH350HD-6 Hydraulic Excavator Service Manual PDF

When a hydraulic excavator develops a performance issue, accurate testing and component-level service information can make the difference between a targeted repair and unnecessary downtime. The Sumitomo SH330-6, SH330LC-6, SH350HD-6 and SH350LHD-6 Hydraulic Excavator Service Manual PDF (WLSM3306-02W) is a technical reference for workshops, mechanics and maintenance teams servicing these Sumitomo excavator models.

This service manual covers more than routine checks. Its listed contents include hydraulic pump operation, travel and swing motors, control valves, pilot controls, electrical and engine functions, diagnostic support, technical specifications and standard torque information. These sections help technicians investigate faults, understand system operation and plan repairs using model-specific documentation.

Excavator Models Covered

• Sumitomo SH330-6 — standard crawler excavator
• Sumitomo SH330LC-6 — long-undercarriage configuration
• Sumitomo SH350HD-6 — heavy-duty excavator configuration
• Sumitomo SH350LHD-6 — long-undercarriage heavy-duty configuration

Manual publication number: WLSM3306-02W

These models share a product family but differ in configuration and application. Confirm the complete model designation and machine serial number before relying on a particular adjustment, specification or repair procedure.

Technical Information Included

• Hydraulic pump system: Main pump construction, operating principles, hydraulic equipment layout and circuit information.
• Travel and swing motors: Technical references for travel motors, swing motors and related drive components.
• Control valves and pilot controls: Control valve operation, remote-control pilot valves, proportional valves and applicable solenoid valve functions.
• Hydraulic circuits: Circuit explanations, hydraulic device layouts and port diagrams for troubleshooting and system identification.
• Engine service information: Engine summary, supporting system information and relevant service functions for the applicable machine configuration.
• Electrical systems: Electrical equipment layouts, engine-related functions and service-support information.
• Specifications and torque data: General specifications, special torque settings, standard torque data for fasteners and technical reference tables.
• Safety and general information: Safety guidance and general technical information relevant to workshop servicing.
• Component identification: Overall views, equipment tables and illustrations that help locate and understand machine assemblies.
• Maintenance fluids: Relevant fluids and lubricant information listed in the manual.

The publication is designed as a service reference rather than simply an operator handbook. It can support technical investigation of hydraulic, mechanical and electrical systems, subject to the procedures and coverage in the supplied edition.

Sumitomo Excavator Specifications

Specification	Published details
Manufacturer	Sumitomo Construction Machinery
Equipment type	Hydraulic crawler excavator
Models	SH330-6, SH330LC-6, SH350HD-6, SH350LHD-6
Engine model	Isuzu 6HK1X, as listed in the product-family specification
Rated engine output	200 kW at 2,000 rpm
Engine displacement	7.79 litres
Standard operating weight	SH330-6: 34,100 kg; SH330LC-6: 34,700 kg; SH350HD-6: 36,200 kg; SH350LHD-6: 36,700 kg
Bucket capacity	SH330-6 / SH330LC-6: 1.4 m³; SH350HD-6 / SH350LHD-6: 1.6 m³, ISO heaped
Main hydraulic pumps	Two variable-displacement axial-piston pumps
Maximum working pressure	34.3 MPa; 37.3 MPa with automatic power boost on the specified working circuit
Fuel tank capacity	580 litres
Hydraulic oil tank capacity	175 litres

Specifications are published product-family figures. Actual configuration, optional equipment and applicable serial-number specifications should be checked for the individual machine.

PDF Manual Specifications

Detail	Information
Document title	Sumitomo SH330-6 / SH330LC-6 / SH350HD-6 / SH350LHD-6 Hydraulic Excavator Service Manual
Publication number	WLSM3306-02W
Document type	Service and technical repair manual
File format	PDF
Language	English, according to the product listing
Technical coverage	Hydraulics, travel and swing systems, control valves, engine and electrical functions, specifications and service information
Intended users	Excavator mechanics, service technicians, independent workshops and fleet maintenance teams

Why Choose the Correct Service Manual?

Hydraulic excavators rely on coordinated pump, valve, motor and electronic-control functions. Understanding how these systems interact helps technicians approach problems such as weak implement movement, inconsistent travel, swing irregularities or control-response issues in a structured way.

Use the manual's relevant diagnostic procedure, circuit information and specifications when investigating a fault. Confirm that the procedure applies to your exact model and configuration, especially when working with pressure settings, control components or electrical systems.

Get the Sumitomo WLSM3306-02W Service Manual PDF

Keep model-specific technical information available for your maintenance work with the Sumitomo SH330-6, SH330LC-6, SH350HD-6 and SH350LHD-6 Service Manual PDF from Manualskart.com. Check the publication number, listed models and supplied document contents before purchase to ensure you select the correct reference.

Frequently Asked Questions

Which excavators are covered by WLSM3306-02W?

The listed applications are Sumitomo SH330-6, SH330LC-6, SH350HD-6 and SH350LHD-6 hydraulic excavators.

Does the manual include hydraulic pump and control valve information?

Yes. The published contents list hydraulic pump information, control valves, pilot valves, proportional valves, hydraulic layouts and circuit diagrams.

Can this manual help with travel motor and swing motor problems?

The contents include travel motor and swing motor technical information. Use the relevant diagnostic and service procedures for the machine configuration.

Does the PDF cover engine and electrical systems?

The listed contents include an engine summary, electrical equipment layouts, engine functions and service-support information.

Is this an operator manual or a service manual?

WLSM3306-02W is listed as a service manual. It is intended for technical service and repair reference rather than being limited to everyday operating instructions.

How can I verify compatibility before ordering?

Check your excavator's model designation and serial number, then compare them with the publication number and model coverage shown in the product listing.