Welded Hydraulic Cylinders repeatedly leaks oil? Changing the oil seal is useless!
In addition to the engine, welded hydraulic cylinders parts can be said to be the most precise parts in mechanical equipment. The efficient operation of the entire hydraulic system can ensure the efficiency and stability of hydraulic equipment construction.
Therefore, no matter how many or small failures the hydraulic system encounters, please find a maintenance engineer to solve it. After reading my introduction to welding hydraulic cylinders, do you still spend high maintenance costs to find a master to repair when you encounter a simple problem such as hydraulic cylinder leakage?
Failure phenomenon
Oil leakage occurred in the welding cylinder of mechanical equipment, so the owner judged that the seal at the end of the hydraulic cylinder had failed.
Fault handling process
1. Based on the observed phenomena and combined with previous experience, the owner first replaced the seals of the hydraulic cylinder, and the problem was temporarily solved, but oil leakage occurred after a short period of use
2. Only replacing the seals did not solve the problem, so the owner directly replaced with a new repair kit, but the same problem occurred soon
3. Analyze the root cause, the problem is not on the piston of the hydraulic cylinder, but on the seal at the end of the hydraulic cylinder.
4. After careful inspection, it is found that there are many pits and grooves formed by wear on the sealing surface of the guide sleeve, which increases the sealing gap between the guide sleeve and the piston rod, and does not reduce the pressure, thereby causing the high pressure inside the welding hydraulic cylinder. The oil directly impacts the primary and secondary sealing rings.
It is conceivable that the sealing ring will be damaged in a short time under the action of high pressure oil, so the oil leakage phenomenon is always repeated and not repaired.
summary
Through the entire troubleshooting process, many owners can also understand why they have replaced new accessories when handling the fault, but the problem is always repaired repeatedly.
Therefore, when replacing the hydraulic cylinder repair kit, you should not only replace the seals, but also pay attention to checking the related components. This small detail is applicable to the above-mentioned failure problems of excavators/engineering machinery, etc. I hope to bring you reference.