Hydraulic cylinder faults

Hydraulic cylinder faults

Are one of the common faults in automotive engines. Cylinder fault is when the inner wall of a cylinder is pulled into deep grooves, causing the piston, piston ring, and cylinder wall to lose sealing when friction occurs, resulting in a decrease in cylinder compression pressure and loss of power. The car should maintain a normal temperature of 70 ℃ to 95 ℃ for cooling water to avoid engine overheating. Before starting in winter, preheating measures should be taken, the engine should be operated and used reasonably, and overloading should not be allowed. The accelerator should not be tampered with, and starting should not be short of water. Maintenance and upkeep of the air filter should be strengthened to strictly prevent dust from being sucked into the cylinder.

A complete hydraulic system is composed of a power part, a control part, an execution part, and an auxiliary part. The hydraulic cylinder, as the execution part, is one of the important execution components in the hydraulic system. It converts the liquid pressure output by the power component oil pump into mechanical energy to execute a certain action, and is an important energy conversion device. The forms of cylinder fault injuries are diverse, so the reasons for cylinder damaged are also diverse. Excessive dry friction between the cylinder barrel and piston in general hydraulic cylinders leads to strain on the contact surface.


1. The inner wall of the hydraulic cylinder itself is slightly scratched, causing an increase in oil temperature during daily operation, which accumulates and causes cylinder fault.

2. Improper assembly and manufacturing process can cause foreign objects such as dust particles and iron filings to adhere to the cylinder body, which can cause compression and wear of the cylinder body during operation, resulting in cylinder fault.

3. Impurities in hydraulic oil mixed into the cylinder barrel, causing cylinder fault.

4. Due to installation errors, the hydraulic cylinder is subjected to eccentric loads, causing the piston rod to deflect and deform, resulting in cylinder fault.

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