SUNWARD SWE18UF - User Manual

SUNWARD SWE18UF

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I

SWE18UF

Crawler-type Hydraulic Excavator

Operation & Maintenance

Manual

2001#

Sunward Intelligent Equipment Co., Ltd.

April, 2021

© All rights reserved by Sunward Intelligent Equipment Co., Ltd.

Table of Contents

Other manuals for SUNWARD SWE18UF

Operation & Maintenance Manual120 pages

Questions and Answers

M
Marc ArroyoAug 15, 2025
Why is the hydraulic oil temperature rising too fast in my SUNWARD Excavator?
- T
  thompsonwilliamAug 15, 2025
  If the hydraulic oil temperature in your SUNWARD Excavator rises too fast or becomes too high, it could be due to dirt on the surface of the oil cooler. Try cleaning the oil cooler. Another cause can be wear of hydraulic parts and reduction of the cubage efficiency, in this case you should contact the dealer. Also, check if the overflow valve and overload valve are opening too frequently. If so, avoid over digging or overloading, and consider changing your digging method.
C
Craig AllenAug 18, 2025
How to fix a noisy hydraulic pump in my SUNWARD Excavator?
- D
  Danielle SmithAug 18, 2025
  A noisy hydraulic pump and vibratory pipeline in your SUNWARD Excavator could be due to several reasons. First, there might be air bubbles in the hydraulic system; check for air leakage at the oil pump inlet pipeline. Second, the hydraulic oil might be aging, degenerative, mixed with moisture, or of the wrong brand and specification, which can produce bubbles; in this case, replace the oil. Also, low hydraulic oil temperature and high viscosity of the hydraulic oil can be a cause; run the engine at low revs and then warm it up. If these steps don't resolve the issue, the problem may be a hydraulic malfunction, and you should consult with your dealer.
C
carrillosusanAug 22, 2025
What to do if control levers don’t work on SUNWARD SWE18UF?
- G
  Gary HolmesAug 22, 2025
  If the control levers on your SUNWARD Excavator don’t work or work 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 is now floating in the pilot control pipeline and hydraulic cylinder. Try operating the control levers several times. Another cause may be low hydraulic oil temperature and high viscosity; in this case, warm up the machine. Also, check the hydraulic control system, low-pressure relief valve, and gear pump for no pressure or exceeding pressure in the pilot system. For hydraulic pump malfunction or main safety relief valve malfunction consult with your dealer.
B
Brandy RussoAug 25, 2025
Why is one track not working on my SUNWARD Excavator?
- D
  David DavidsonAug 26, 2025
  If one track of your SUNWARD Excavator doesn’t work or moves very slowly, consider the following potential causes. First, the control pilot valve could be malfunctioning, so repair it. For other causes, such as a malfunctioning reversing valve and stop valve, center connector seal damage, hydraulic motor malfunction, travel redactor fault, or unequal displacement of the duplex hydraulic pump, consult with the dealer.
B
Brandon BowenAug 28, 2025
Why is the slewing platform on my SUNWARD Excavator not working properly?
- J
  jonesmatthewAug 28, 2025
  If the slewing platform on your SUNWARD Excavator doesn’t slew, slews slowly, or doesn’t slew smoothly, there are several possible causes. The corresponding pilot valve may be malfunctioning, so repair it. You may need to add lubricant grease into the slewing bearing. If the issue persists, it could be due to hydraulic motor malfunction, slewing retarder malfunction, or slewing bearing malfunction, in such case consult with your dealer or repair.
E
Edward Wright IIISep 1, 2025
What causes a cylinder to not work on a SUNWARD Excavator?
- E
  Emily DavisSep 1, 2025
  If a cylinder on your SUNWARD Excavator doesn’t work or works slowly, the cause could be a malfunctioning corresponding pilot valve, in this case repair it. If the hydraulic cylinder interior seals are damaged, replace the oil seals. For other potential issues such as a malfunctioning corresponding reversing valve, overload valve, or a damaged hydraulic cylinder rod, consult with your dealer.
S
Steven GrahamSep 4, 2025
What causes unexpected actions in my SUNWARD Excavator?
- K
  Kari SandersSep 4, 2025
  If your SUNWARD Excavator performs unexpected actions without handle operation, this could be due to a pilot valve lever or spool block. Contact the dealer.
V
vhillSep 7, 2025
What causes the 'nodding' condition in SUNWARD Excavator work device?
- A
  Amber KellySep 7, 2025
  The “nodding” condition of the work device on your SUNWARD Excavator is usually caused by the block of multi-way valve lever’s check valve, inspect and replace it.
E
Edward BrownSep 12, 2025
How to fix mandril leak at the top of pilot valve in SUNWARD Excavator?
- D
  Daniel WarnerSep 12, 2025
  If there's a mandril leak at the top of the pilot valve in your SUNWARD Excavator, it's likely due to the seal ring of the pilot valve mandril piston trepan boring aging or damage. Inspect and replace it.

Summary

SAFETY RULES

SAFETY LABELS

Detailed information and placement of safety labels on the machine.

GENERAL SAFETY RULES

General guidelines for safe operation and maintenance of the machine.

SAFE OPERATION INSTRUCTIONS

Specific instructions and precautions for operating the excavator safely.

SAFETY MAINTENANCE INFORMATION

Safety precautions related to machine maintenance and servicing procedures.

TRANSPORT AND STORAGE

TRANSPORT PROCEDURES

Procedures and specifications for safely transporting the excavator.

STORAGE GUIDELINES

Guidelines for storing the machine properly to prevent damage.

ABOUT MACHINE

MACHINE COMPONENTS IDENTIFICATION

Identifies main components of the excavator with diagrams.

OPERATORS CAB AND CONTROLS

Details the layout and function of the operator's cab, levers, and switches.

AUXILIARY SYSTEMS

Information on auxiliary circuit pipelines and attachment controls.

MACHINE OPERATION

RUNNING-IN AND ENGINE OPERATION

Procedures for initial operation, engine startup, and shutdown.

TRAVEL CONTROL

Instructions on operating the machine's travel functions.

EXCAVATION OPERATIONS

Guidelines and key points for performing excavation tasks safely.

MAINTENANCE

MAINTENANCE AND INSPECTION PROCEDURES

General procedures for correct maintenance and daily inspections.

LUBRICATION AND FLUIDS GUIDE

Details on greasing, engine oil, gear oil, fuel, hydraulic oil, air filter, and cooling system.

MAINTENANCE IN SPECIAL SITUATIONS

Maintenance for specific conditions like dust, heat, stony ground, and cold weather.

LONG-TERM STORAGE PROTECTION

Procedures to maintain the machine's function during storage periods.

TROUBLESHOOTING

MALFUNCTIONS AND SOLUTIONS

Common machine malfunctions, possible causes, and recommended solutions.

TECHNICAL PARAMETERS

MACHINE SPECIFICATIONS

Detailed technical specifications of the machine's engine and hydraulic systems.

DIMENSIONS AND WORK PARAMETERS

Outline dimensions, working range, and lifting capacity of the excavator.

APPENDIX

ELECTRICAL SCHEMATICS AND COMPONENTS

Electrical schematics, component list, and fuse locations.

HYDRAULIC SCHEMATICS AND COMPONENTS

Hydraulic schematics and a list of hydraulic components.

AUXILIARY CIRCUIT OPERATION

SAFETY AND ATTACHMENT NOTES

Safety precautions for optional attachments and assembly notes.

HYDRAULIC HAMMER BREAKER OPERATION

Instructions for using, controlling, and maintaining the hydraulic hammer breaker.

MANUFACTURER INFORMATION

COMPANY AND CONTACT DETAILS

Information about Sunward Intelligent Equipment Co., Ltd. and its service network.

SUNWARD SWE18UF Specifications

General

Brand	SUNWARD
Model	SWE18UF
Category	Excavators
Language	English

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