Hydraulic pump making whining noise

Symptoms of Common Hydraulic Problems and Their Root Causes

hydraulic pump making whining noise

How to fix noisy power steering hydraulic pump.

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For an archive of past newsletters, please visit:. In This Issue 1. Funny Noises. Spread the Word! I asked the man I was working with about it and he said, "It's done that as long as I've been here.

When a hydraulic issue occurs, the pump usually is one of the first components changed out, but it actually should be the last. Because a pump is the most time-consuming part to replace and the most expensive. It should never be changed before several tests are conducted. The easiest tests and checks should be made first. Is the electric motor running? This sounds like a no-brainer, but it should not be overlooked.

Hydraulic systems have valuable applications in many machine solutions, however, they can also be extremely noisy. And, in industrial facilities with many machines running at the same time, noise can rise to a dangerous level. Hydraulic systems that are too loud can result in headaches, hearing damage and even total hearing loss caused by extended exposure. Excessive noise can also cause elevated stress, poor communication between workers and impaired focus which can lead to workplace accidents. According to the Occupational Safety and Health Administration OSHA , work environments expose 22 million workers to potentially damaging sound levels every year. Luckily, companies can use many strategies to reduce hydraulic system noise to avoid costly fines and keep their workers safe.

Phillyphan Customer asked a question. Sounds like the main relief valve. If it makes the noise and pressure drops, it is blowing open and staying there. If the old pump failed, it may have debris in the relief valve and cause it to malfunction. That is wierd, usually the main relief will take care of that. There are also NFC reliefs at each end of the valve body that controls the two pumps. Possilby if one of them was sticking would cuase it.

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Troubleshooting Hydraulic Pumps






  1. Aidan P. says:

  2. Melody A. says:

  3. Davet L. says:

    Sound Checks

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