A na-ekewa usoro ntọala nke onye na-egwupụta ihe n'ime: 1. N'okpuru ụgbọ ala;2. Akụkụ ahụ;3. Akụkụ ngwaọrụ na-arụ ọrụ.Ngwaọrụ na-arụ ọrụ: -boom, mkpisi, ịwụ, hydraulic cylinder, mkpanaka njikọ, pin, pipeline.Akụkụ ahụ - engine, ujo absorber isi mgbapụta, isi valvụ, cab, slewing usoro ...
GỤKWUO