Hydraulic pump noise causes and troubleshooting methods

1) The filter of the pump is blocked by dirt and cannot function as a filter: remove the dirt with a clean cleaning oil.

2) The oil level is insufficient, the oil suction position is too high, and the oil suction pipe is exposed to the oil surface: refueling to the oil standard position, reducing the oil absorption position.

3) There is no paper pad on both sides of the pump body and the pump cover; the pump body and the pump cover are not vertically sealed: air is sucked during rotation: a paper pad is added between the pump body and the pump cover; the pump body is ground with a diamond on the plate to make the pump The verticality error between the body and the pump cover shall not exceed 0.005mm, and the connection between the pump body and the pump cover shall be tightened, and there shall be no leakage.

4) The drive shaft of the pump is not concentric with the motor coupling, and there is a twisted friction: adjust the concentricity of the pump and the motor coupling so that the error does not exceed 0.2 mm.

5) The meshing precision of the pump gear is not enough: the grinding gear reaches the gear meshing precision.

6) The oil seal skeleton of the pump shaft falls off, and the pump body is not sealed: replace the qualified pump shaft oil seal.

For the treatment :

[Of all the diseases of the nervous system, the most common difficulty that people have is pain, and much of that is nerve-related," according to Dr. Shai Gozani, founder and CEO of NeuroMetrix, a medical device company. [There are 100 million people who live with chronic pain."


According to the Mayo Clinic, patients with nerve disorders experience functional difficulties, which result in conditions such as:


Epilepsy, in which abnormal electrical discharges from brain cells cause seizures

Parkinson's disease, which is a progressive nerve disease that affects movement

Multiple sclerosis (MS), in which the protective lining of the nerves is attacked by the body`s immune system

Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, is a motor neuron disease which weakens the muscles and progressively hampers physical function

Huntington's disease, which is an inherited condition that cause the nerve cells in the brain to degenerate

Alzheimer's disease, which covers a wide range of disorders that impacts mental functions, particularly memory.

Mayo Clinic also noted that the nervous system can also be affected by vascular disorders such as:


Stroke, which occurs when there is bleeding on the brain or the blow flow to the brain is obstructed;

Transient ischemic attack (TIA), which are mini-type strokes that last a shorter period of time but mimic stroke symptoms; and

Subarachnoid hemorrhage, which is specifically bleeding in the space between your brain and the surrounding membrane that can be the result of a trauma or rupturing of a weak blood vessel;

Infections such as meningitis, encephalitis, polio, and epidural abscess can also affect the nervous system, the NIH noted.


Treatments vary from anti inflammatory medications and pain medications such as opiates , to implanted nerve stimulators and wearable devices, Gozani said. [Many people also turn to herbal and holistic methods to reduce pain, such as acupuncture."


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