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General Maintenance Procedures
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WELDING PRECAUTIONS AND GUIDELINES
IMPORTANT
To avoid accidents, personal injury and the possibility of causing damage to the excavator or to
components, welding must only be performed by properly trained and qualified personnel, who
possess the correct certification (when required) for the specific welding fabrication or
specialized repair being performed.
WARNING!
Structural elements of the excavator may be built from a variety of steels. These could contain
unique alloys or may have been heat treated to obtain particular strength characteristics. It is
extremely important that welding repairs on these types of steel are performed with the proper
procedures and equipment. If repairs are performed incorrectly, structural weakening or other
damage to the excavator (that is not always readily visible) could be caused. Always consult
Daewoo After Sales Service before welding on integral components (car body, track frames,
turntable, attachment) of the excavator. It is possible that some types of structurally critical
repairs may require Magnetic Particle or Liquid Penetrant testing, to make sure there are no
hidden cracks or damage, before the excavator can be returned to service.
CAUTION!
Always perform welding procedures with the proper safety equipment on hand. Adequate
ventilation and a dry work area are absolutely essential. Keep a fire extinguisher nearby and
always wear protective clothing and the recommended type of eye protection.
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