Fault 1: The telescopic cylinder vibrates and the telescopic arm creeps
Analysis and solution
a. There is air in the hydraulic system. The solution is to repeat the action several times to remove the air in the system.
b. The seal inside the telescopic cylinder is aging. The solution is to replace the cylinder seal.
c. There is dirt in the balancing valve. Solution: Clean the balancing valve
d. The boom has no lubricant. The solution is to add lubricant.
Fault 2: When not loaded, the working speed is still too slow.
Analysis and solution
aThe oil suction pipe is squeezed and flattened. The solution is to replace the oil suction pipe
b. There is air sucked in from the oil pipe. Solution: tighten the oil suction pipe joint
Fault 3: The telescopic arm cannot be extended and retracted in sequence
Analysis and solution
a Lack of lubricating oil, solve it by adding lubricating oil
b The slider is broken, the solution is to replace the slider
c. There is a problem with the adjustment of the telescopic arm valve. The solution is to adjust the telescopic arm valve.
Fault 4: The crane cannot lift the rated weight
Analysis and solution
a. Hydraulic pump power is insufficient, the solution is to replace the hydraulic pump
b. The relief valve is set incorrectly. The solution is to readjust the pressure of the relief valve.
c. The hydraulic pump seal is damaged. The solution is to replace the hydraulic pump seal.
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Post time: Feb-06-2025