An excavator is an complete system. Usually it includes the following sytem:

• Engine and engine related parts

• Accessory

• Cooling system

• Electrical system

• Fuel tank and related parts

• Guard

• Hydraulic system

• Main/Revolving frame and related parts

• Marks and plateds

• Miscellaneous

• Operator's Compartment and control system

• Service kit and component parts

• Swing circle and related parts

• Travel and lower piping

• Under carriage

• Work Equipment