Malfunction phenomenon: XCT25L5 345 joint arm cannot extend out。
Fault description: XCT25L5 has no action when extending two arms and then extending three or four or five arms, and the two arms extend normally.
Cause analysis of failure: electrical failure.
Troubleshooting steps and methods:
1：Clear the cause of the fault: the telescopic and other actions of the second arm are normal, which means that there is no problem with the telescopic and luffing solenoid valves on the pilot valve.
2：Check the relevant hardware: check whether the valve core of the boom switching valve is stuck, clean and assemble to ensure that the solenoid valve is not stuck and the valve core is smoothly reversed.
3：Check the relevant electrical circuits: then judge the telescopic control valve of the 345-joint arm in the turntable, and find that the XD2:43-X1:23 line cannot be electrified because of the virtual connection of the solenoid valve head.
XCT25L5 truck cranes are widely used for lifting operations in general engineering projects, such as construction sites, urban renewal, communications and transportation, ports, bridges, oil fields and mines, and complex working environments.
It adopts a 5-segment boom with a U-shaped profile of 42 meters; the maximum lifting load is 25 tons; the maximum lifting height is 50.2 meters; the maximum working radius is 38.5 meters; the performance is fully advanced.
The new energy-saving hydraulic system has high efficiency, durability and fine control (lifting capacity: 2.5m/min, rotation speed: 0.1°/s),
The industry's first optimal transmission system helps to improve off-road performance and low fuel consumption; the grade capacity reaches 45%.
The technology of XCT25L5 is very X. When hoisting, the two-section boom can be omitted, and three-four-five-section boom can be directly produced. There are two advantages: First, it saves time and effort. The size of the two-section arm takes more time and delays the project. Second, as long as the crane has been wasting fuel when it is turned on, the shorter the lifting time, the more fuel-efficient it is.
Post time: Aug-21-2020