To avoid accidents, personal injury and the possibility of causing damage to the machine 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.
Structural elements of the machine 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 machine (that is not always readily visible) could be caused. Always consult DISD
After Sales Service before welding on integral components (loader arm, frames, car body, track
frames, turntable, attachment, etc.) of the machine. 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 machine can be returned to service.
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.