Depends on where you learn, but also depends on your attitude to learn, depends on your personal ability.
If in the school will be faster, because there is no retention of the idea, in the repair shop or in other places, learning master will have some retention of the technology, you are difficult to learn, the time to be very long, their own Amoy experience.
In the repair shop, then, at least four years to become a master, but the circuit is not necessarily know thoroughly. In the case of the school, only two years, can be mechanic and electrician all through, and also learn, will help you find a job.
Work content:
(1) regular maintenance and repair of construction machinery;
(2) the use of relevant testing equipment to determine the construction machinery engine, chassis, hydraulic and electronic control systems, working devices and other components and parts of the failure, and to eliminate;
(3) disassembly and assembly of the main body of the construction machinery to be repaired, assemblies or components;
(3) disassembly and assembly of the construction machinery to be repaired.
(4) Repairing spare parts of construction machinery by using relevant equipment and technology.