SUNWARD SWE20B - User Manual

Joshua HeathAug 2, 2025

Why is the hydraulic pump noisy and the pipeline vibratory in SUNWARD SWE20B Excavators?

A
Aaron TaylorAug 2, 2025
The noisy hydraulic pump and vibratory pipeline in your SUNWARD Excavator can be attributed to several reasons: * Hydraulic malfunction: It is recommended to consult with your dealer. * Air bubble in the hydraulic system: Check for air leakage at the oil pump inlet pipeline. * Aging hydraulic oil: The oil might be degenerative, mixed with moisture, or of the wrong brand and specification, causing bubbles. Replace the oil. * Low hydraulic oil temperature: High oil viscosity can be a factor. Run the engine at low revolutions per minute (RPMs) to warm it up.

Summary

Safety Rules

General Safety Instructions

Safety marks, labels, and general guidelines for safe operation.

Operational Safety Precautions

Covers emergencies, protective gear, start-up, and operation safety.

Hazard Awareness and Prevention

Addresses risks like exhaust gas, scalding, fire, noise, vibration, and other marks.

Machine Familiarization

Model Identification and Components

Explains model naming, identifies components, and lists accessories.

Machine Components Overview

Identifies and labels all major physical components of the excavator.

Cabin Layout and Controls

Details the components and controls within the excavator's cabin.

Monitor Panel Indicators

Explains the function and indicators of the machine's monitoring panel.

Control Panel Switches and Functions

Describes switches on the control panel, including wipers and heaters.

Operator Controls and Adjustments

Covers safety levers, engine speed, pilot operations, and seat adjustment.

Machine Operation Controls

Explains dozer, travel, boom swing, and assistant control pedals.

Ancillary Systems: Heater, Radio, Windows

Operation and maintenance of the heater, radio, and cabin window.

Machine Operation

Working Environment and Initial Operation

Specifies operating conditions and initial running-in procedures.

Engine Operation and Checks

Daily engine inspections, oil checks, and starting/stopping procedures.

Travel Control and Procedures

Explains pedal and handle controls for machine travel and slope operation.

Excavation Operations

Detailed guidance on performing excavation tasks, including safety and tips.

Lift Work and Hydraulic Breaking

Procedures for lifting objects and operating the hydraulic breaker.

Boom Swing Operation

Details the operation of the boom swing control pedal.

Maintenance

Correct Maintenance and Inspection

General guidance on performing maintenance and inspections correctly.

Periodic Maintenance Schedules

Outlines recommended periodic maintenance tasks and intervals.

Engine Oil and Filter Maintenance

Procedures for checking, replacing engine oil, and its filter.

Gear Oil Maintenance

Procedures for checking and replacing gear oil for reducers.

Fuel System Maintenance

Maintenance tasks for the fuel system, including fueling and filter replacement.

Hydraulic System Maintenance

Procedures for checking, refilling, and maintaining the hydraulic system.

Air Filter Maintenance

Procedures for cleaning and replacing the air filter core.

Cooling System Maintenance

Maintenance for the cooling system, including coolant replacement.

Other Maintenance Procedures

Maintenance for bucket teeth, tracks, lubrication, and bolts.

Special Situation Maintenance

Maintenance for various conditions like mud, dust, and cold weather.

Long-Term Storage Protection

Measures to protect the excavator during storage periods.

Transportation and Storage

General Transportation Rules and Measurements

Regulations and dimensions for transporting the machine by trailer.

Loading & Unloading Procedures

Detailed procedures and safety warnings for loading and unloading.

Highway Transportation and Storage

Rules for highway transport and guidelines for long-term storage.

Trouble Shooting

Malfunctions and Solutions Overview

Lists common malfunctions, their reasons, and solutions.

Control System Issues

Troubleshooting for control levers, cylinders, and slewing platform problems.

Track and Heater Issues

Diagnosing and fixing track and heater unit problems.

Specifications

Technical Parameters

Detailed technical specifications of engine, hydraulic system, and components.

Component Specifications

Specifications for swing, travel, electric, and fuel systems.

Dimensions and Operating Parameters

Outline dimensions and operating parameters like digging reach and depth.

Attachment

Electric Drawing

Provides the electrical schematic diagram of the excavator.

Hydraulic Drawing

Presents the hydraulic system diagram for the four-pump system.

Hydraulic Component List

A comprehensive list of hydraulic components used in the excavator.

Engine Model	Yanmar 3TNV70
Digging Force (Bucket)	15.2 kN
Operating Weight	2050 kg
Bucket Capacity	0.04 m³
Transport Height	2.3 m

Engine Model

Yanmar 3TNV70

Digging Force (Bucket)

15.2 kN

Operating Weight

2050 kg

Bucket Capacity

0.04 m³

Transport Height

2.3 m