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SUNWARD SWE20F 2019 - User Manual

SUNWARD SWE20F 2019
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Operation & Maintenance
Manual
SWE20F
Hydraulic Excavator
SUNWARD INTELLIGENT EQUIPMENT CO., LTD.
Sunward Intelligent Industrial Park, Xingsha, Changsha, China
Sept.2019

Table of Contents

Questions and Answers

  • Q
    qmooreAug 17, 2025
    Why is the hydraulic pump noisy and the pipeline vibratory in my SUNWARD Excavators?
    • K
      Katie CaldwellAug 17, 2025
      The noisy hydraulic pump and vibratory pipeline in your SUNWARD Excavators can be caused by several factors. It could be a hydraulic malfunction, in which case you should consult with your dealer. Another cause can be an air bubble in the hydraulic system, so check for air leakage at the oil pump inlet pipeline. Also, aging hydraulic oil, degenerative oil mixed with moisture, or using the wrong brand and specification can produce bubbles, so consider replacing the oil. Finally, low hydraulic oil temperature and high viscidity of hydraulic oil can cause this issue, so run the engine at low revs and warm it up.
  • V
    Victoria RossAug 20, 2025
    What to do if control levers don’t work or work slowly on SUNWARD Excavators?
    • J
      justinjohnsonAug 20, 2025
      If the control levers on your SUNWARD Excavators are not working or working slowly, several factors could be the cause. If the machine has been out of use for a long time, air may have separated from the oil and floated in the pilot control pipeline and hydraulic cylinder. To resolve this, operate the control levers several times. It could also be due to no pressure or exceeding pressure in the pilot system, so check the hydraulic control system, low-pressure relief valve, and gear pump. Low hydraulic oil temperature and high viscosity of hydraulic oil can also be a factor, so warm up the machine. In case of hydraulic pump malfunction or main safety relief valve malfunction, consult with your dealer.
  • R
    Roger AdamsAug 22, 2025
    What to do if the hydraulic oil temperature rises too fast or becomes too high in SUNWARD SWE20F 2019?
    • B
      Bobby EwingAug 22, 2025
      If the hydraulic oil temperature in your SUNWARD Excavators rises too fast or becomes too high, it could be due to dirt on the surface of the oil cooler, so you should clean it. Another reason may be the wear of hydraulic parts and reduction of the cubage efficiency, in that case, contact the dealer. Also, frequent opening of the overfall valve and overload valve due to over digging or overloading can cause this, so change the digging method.
  • B
    blevinskathyAug 26, 2025
    Why is one track not working or moving slowly on my SUNWARD SWE20F 2019 Excavators?
    • E
      erika52Aug 26, 2025
      If one track of your SUNWARD Excavators doesn’t work or moves very slowly, causing serious deflection of traveling, it could be due to several reasons. It may be caused by control pilot valve malfunction, in that case you should repair it. The corresponding commutator valve and stop valve may also be malfunctioning, or there could be center connector seal damage, hydraulic motor malfunction, travel redactor fault, or unequal displacement of the two-gang hydraulic pump, in all of these cases you should consult with the dealer.
  • A
    Aaron HuntAug 28, 2025
    What causes a cylinder to not work or work slowly in SUNWARD Excavators?
    • K
      Kelsey DelgadoAug 28, 2025
      A cylinder in your SUNWARD Excavators might not work or work slowly due to several reasons: a malfunctioning corresponding pilot valve (repair it), a malfunctioning corresponding commutator valve (consult with your dealer), a malfunctioning corresponding overload valve (consult with your dealer), a damaged hydraulic cylinder pole (consult with your dealer), or damaged hydraulic cylinder interior seals (replace oil seals).
  • N
    Noah CookAug 30, 2025
    What to do if the slewing platform doesn’t slew, slews slowly, or slews not smoothly on SUNWARD SWE20F 2019?
    • B
      Bailey RamirezAug 31, 2025
      If the slewing platform on your SUNWARD Excavators doesn’t slew, slews slowly, or slews not smoothly, it could be due to a corresponding pilot valve malfunction (repair it), hydraulic motor malfunction (consult with your dealer), slewing retarder malfunction (consult with your dealer), slewing bearing malfunction (repair it), or the need to add lubricant grease into the slewing bearing (add lubricant grease).
  • L
    Lori HardinSep 2, 2025
    What causes unexpected actions without operating on SUNWARD SWE20F 2019 Excavators?
    • W
      William AyalaSep 2, 2025
      Some unexpected actions without operating on your SUNWARD Excavators can be caused by a multitandem valve lever block or a pilot valve core block. In both cases, contact the dealer.
  • M
    Mary JohnsonSep 5, 2025
    What causes work device malfunction in SUNWARD Excavators?
    • M
      Melissa BushSep 5, 2025
      Work device malfunction in SUNWARD Excavators is usually caused by the block of multitandem valve lever’s one way valve. Inspect and replace it.
  • A
    Andrea MartinezSep 8, 2025
    How to fix mandril leak at the top of pilot valve in SUNWARD Excavators?
    • M
      Madison HaasSep 8, 2025
      A mandril leak at the top of the pilot valve in your SUNWARD Excavators is caused by the seal ring of the pilot valve mandril piston trepan boring aging or damage. Inspect and replace it.
  • S
    smithstevenSep 12, 2025
    What to do if the heater unit stops working in SUNWARD SWE20F 2019 Excavators?
    • N
      Nathan NguyenSep 12, 2025
      If the heater unit stops working in your SUNWARD Excavators, it could be due to a circuit break or bad grounding. Check and repair.

Summary

1. Safety Rules

1.1 Safety Mark

1.2 Safety Label

1.3 General Safety Instruction

Provides fundamental instructions for safe operation and maintenance of the machine.

1.4 Prepare for Emergencies

1.5 Wear Safety Protective Articles

Lists essential safety protective articles to be worn during operation.

1.6 Check Machine Before Start-Up

Details the pre-start checks required for the machine before daily operation.

1.8 Enter or Leave Machine Correctly

1.9 Start Engine Correctly

Specifies the correct procedure for starting the engine to prevent accidents.

1.10 Forbid Hitching Other People

1.11 Keep Machine Away From Electricity Transmission Line

Warns about the extreme danger of contact with electricity lines and specifies safe distance.

1.12 Move Machine Safely

Provides guidelines for safe machine movement, including awareness of surroundings and horn usage.

1.13 Prevent Accident While Backing or Swinging

Details precautions to prevent accidents during backing and swinging operations.

1.14 Operate Digging Work Safely

Covers safe practices for digging operations, including awareness of underground lines and ground stability.

1.15 Avoid Accident By Control Failure

Explains how to prevent loss of machine control and potential accidents.

1.16 Park Machine Safely

Provides the correct procedure for safely parking the machine.

1.17 Safe Maintenance

Outlines essential safety precautions and preparation steps for performing maintenance.

1.18 Support Machine Correctly

Details the safe methods for supporting the machine or its components during maintenance.

1.20 Prevent Battery From Exploding

Warns about the dangers associated with the battery and how to prevent explosions.

1.22 Prevent Splashing Objects

1.23 Prevent Parts From Flying Off

1.24 Keep Away From Transmission Parts

1.25 Avoid Inhaling Asbestos Dust

Highlights the health risks of asbestos dust and provides safe handling procedures.

1.26 Beware of Inhaling Fog or Exhaust Gas

Warns about the dangers of inhaling exhaust gases and advises on ventilation.

1.27 Beware of Scald

Advises caution regarding hot engine parts and fluids to prevent scalding.

1.28 Be Cautious of Pressure Liquids

Warns about the dangers of high-pressure liquids penetrating skin and causing injury.

1.29 Avoid Heating Up Near Pressure Oil Pipe

Advises against heating near pressurized oil pipes due to fire hazards.

1.30 Avoid Heating Up Inflammable Liquid Pipe

Warns against welding or heating flammable liquid pipes without proper safety measures.

1.31 Remove Paint Before Welding or Heating

Provides safety procedures for removing paint before welding or heating to avoid toxic gas.

1.32 Dispose of Liquid Safely

1.33 Dispose of Chemical Safely

1.34 Avoid Fire

Lists essential steps to prevent fires, including checking for leaks and short circuits.

1.35 Emergency Exit

Explains how to use the emergency exit in case of a cabin emergency.

1.37 Other Safety Marks

2. Machine Familiarization

2.3 Monitor Panel

2.5 Start-Up Switch

2.9 Pilot Safety Lever

Explains the function and importance of the pilot safety lever for preventing accidental movement.

2.11 Pilot Operation

3. Machine Operation

3.2 Running and Operation

3.3 Operate Engine

Details the daily inspection and operation procedures for the engine.

3.4 Travel Control

3.5 Excavation

Covers safe and efficient operation procedures for excavation work.

3.6 Lift Work

Details the safety precautions and procedures for lifting operations.

3.7 Hydraulic Breaking Operation

4. Maintenance

4.1 Correct Maintenance and Inspection Procedure

4.2 Maintenance Guide

4.2.2 Engine Oil

4.2.3 Gear Oil

4.2.4 Fuel System

4.2.5 Hydraulic System

4.2.6 Air Filter

5. Transportation and Storage

5.3 Loading & Unloading

6. Trouble Shooting

Malfunctions and Solutions

SUNWARD SWE20F 2019 Specifications

General IconGeneral
BrandSUNWARD
ModelSWE20F 2019
CategoryExcavators
LanguageEnglish

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