This is the operator's cab.

Assembling process of large-sized hydraulic excavator CAB unit

• After the materials to be welded are purchased from a partner company, areas such as the floor and ceiling are then sub assembled.

  

• Parts from the “SUB-ASSEMBLY” process is brought and built up just like a house. Main welding is undertaken turning the Cab frame side ways and upside dawn after checking all the measurements.

  

• After welding exterior panels and other small parts, adjustments and inspection is undertaken before passing the Cab frame to the painting section.

  

• Cation electrode positioning painting is carried out (painted into black), and after coking , the first color is painted.

  

• Masking is done to prevent over painting on unneeded areas before the second color is painted to finish off the painting proceedure.

  

• After painting, air conditioner is installed (2 air conditioners are installed as the Cab unit is big), assembling of the piping and electric harnesses are done at the assembly section.

  

• After assembling the driver's seat, initial operation test is undertaken with electric checkers before interior decoration is completed.

  

• Glasses and sashes are set. Check if there is no leak and installation of wipers and mirrors are done. Exterior appearance is checked carefully before final delivery inspection. The product is delivered to KOMATSU Osaka plant after all these procedures.