Crane use and maintenance: run-in period of use and maintenance. Manufacturers to provide product maintenance manual 150 tons truck crane how much money is necessary to operate the equipment operator information before operating the machine, be sure to read the maintenance manual 150 t crane, according to the requirements of the specification operation and maintenance. Crane of structure: in bridge engineering used in lifting machinery, depending on its construction and performance, and can be divided into small light lifting equipment, lifting machinery and bridge type jib type cranes, cable cranes four class. Small light lifting equipment such as: Jacks, pneumatic hoists, electric hoists, balancing gourd (aka balance suspended), winches, etc..