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  • 6 Causes Of Knocking Sound From The Engine | Capitol

    Jun 13, 2019 · Parts of the air/fuel mixture can start to ignite too early. When these mini fireballs collide, they create a knocking noise. If your car has a performance-tuned engine rated for high-octane fuels, you could experience engine knock if you put in fuel with too low of an octane rating. High octane fuels burn more uniformly and resist knock.

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  • How to handle Fanuc motor abnormal noise - cncmakers.com

    Abnormal noise of the servo axis is a common problem in the factory debugging of the machine tool. The main manifestations are as follows: (1) In a static state, the motor load fluctuates after the machine is powered on, and you can feel jitter or "buzzing" when you touch the motor with your hand;

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  • How to Fix Washing Machine Makes Loud Noise During Spin

    Fix#3: Motor Coupling is damaged. One more reason you washer makes loud noise is due to the faulty or damaged motor coupling. The main function of motor coupling is to connect the motor to the washer transmission. It is made normally from plastic and can break …

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  • Analysis Of Abnormal Sound Of Kobelco SK460-8 Excavator

    Mar 23, 2021 · Analysis Of Abnormal Sound Of Kobelco SK460-8 Excavator Rotation Mar 23, 2021. A Kobelco SK460-8 suddenly appeared abnormal noise when turning during work, and it was found to be more and more serious, and the noise was getting louder and louder. The slewing bearings of excavators are generally prone to failures under heavy load conditions.

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  • A CASE STUDY OF ABNORMAL SOUND FROM VFD MOTOR - …

    Nov 17, 2020 · Observations. Abnormal sound noticed from the motor when operated in the minimum speed range during low load. Vibration spectrum collected from motor showed raised noise floor, around and above 270 Hz up to 3500 Hz, the majority of the peaks observed above 2000 Hz range. Run-up test was done to identify the changes in peaks.

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  • A Troubleshooting Solution For The Abnormal Sound Of A

    A Troubleshooting Solution For The Abnormal Sound Of A Excavator Jul 12, 2018. Komatsu PC200-6 can be said to be a real generation of God, this car has a history of more than 20 years, the production time in Japan is about 1995, of course, there are also domestic.

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  • Electric Motor Noise Diagnosis & Cure - InspectAPedia

    Electric motor motor noise diagnosis: this article describes the causes, diagnosis, cure & prevention of noises traced to the electric motor component of an oil burner, air conditioner, or other electric-motor driven equipment. Causes of noisy electric motors used on HVAC equipment, oil burners, air conditioners, fans, water pumps, appliances, etc.

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  • Summary Of Causes And Solutions For Abnormal Noise Of

    Jul 07, 2021 · The traditional piston compressor has the characteristics of stable operation and low noise. However, many users have problems during use, and abnormal noise occurs during operation, such as. Due to the different causes of the failure, the external performance of the abnormal sound and the cause of the occurrence.

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  • (SOLVED)Engine Knocking or Tapping Sound That Varied With

    Solved! My engine was making a knocking or tapping sound that varied with engine RPM, or at times was almost inaudible. Following the steps outlined in this

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  • Underground Slag Machine Mining Tunnel Wheel Grilled

    Underground Slag Machine Mining Tunnel Wheel Grilled Backhoe Mucking Loader. Liteng Machinery is professional for its high-end products of underground slag machine mining tunnel wheel grilled backhoe mucking loader, which is high in quality, reliability, strong in durability, and reliable in performance.

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  • Symptoms of Common Hydraulic Problems and Their Root Causes

    Abnormal Noise. Abnormal noise in hydraulic systems is often caused by aeration or cavitation. Aeration occurs when air contaminates the hydraulic fluid. Air in the hydraulic fluid makes an alarming banging or knocking noise when it compresses and decompresses, as it circulates through the system.

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  • Promotion 2 Ton Articulated Mini Underground Wheel Loader

    Promotion 2 Ton Articulated Mini Underground Wheel Loader for Mining, Find Details about Underground Wheel Loader, Low Profile Wheel Loader from Promotion 2 Ton Articulated Mini Underground Wheel Loader for Mining - Qingdao Saintyol Dawin Machinery Co., Ltd.

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  • How To Repair When Abnormal Sound Of Gear-box?

    5、If the gear box has any abnormal noise during its travel in neutral gear, but the noise weakens or disappears during its travel in high-speed gear, and the abnormal noise of "swoosh" occurs during the sliding in neutral gear, the loose degree of the second axle bearing of the gear box shall be checked.

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  • Abnormal Noise or Vibration on Acceleration : Scion xD Engine

    Trying to get it fixed now. Report. 2008 Scion xD 92,000 mi, Visitor. low pitch noise the increases on acceleration especially when turning to the left. Report. 2008 Scion xD 54,000 mi, tmrepp. Very strong vibration while under throttle in 1st and 2nd, more than 1/4 to 1/3 throttle. 5 speed manual. 3rd gear, hardly an issue unless merging at WOT.

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  • Why is My 3 Phase AC Motor Making Noise? | Industrial

    Mar 09, 2015 · The noise is only produced when unloaded. When under load sound goes away entirely. There are no mechanical problems or vibrations. The bearings are all in good condition and the machine is properly maintained. The noise it produces is extremely loud and can be heard throughout the building. The motor is not connected to a VFD.

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  • The Reason For The Sudden Abnormal Noise Of The Excavator

    Mar 28, 2021 · If there is a dry grinding sound of the compressor shaft, the main reason is that the compressor oil pipe is blocked or the oil pipe is broken and the oil leaks. At this time, the compressor appears to be very hot and abnormal noise occurs, and it should be …

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  • The Engine Is Abnormal. Maybe There Are Problems In These

    Sounds Like Trouble: A Quick Guide to Diagnosing Common

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  • Top Load Washer - Noises Heard During Agitation

    Top Load Washer - Noises Heard During Agitation. Normal sounds and noises made during the wash agitation cycle on top-load washers include: Drumming. This noise is caused by air being pushed out of the basket towards the outer case. This causes the cabinet/outer case to move in and out which may sound like someone is beating on a drum.

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  • Electric Motor Noise Diagnosis & Cure - InspectAPedia

    Electric motor motor noise diagnosis: this article describes the causes, diagnosis, cure & prevention of noises traced to the electric motor component of an oil burner, air conditioner, or other electric-motor driven equipment. Causes of noisy electric motors used on HVAC equipment, oil burners, air conditioners, fans, water pumps, appliances, etc.

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  • Diagnosing Common Engine Noises - James on Engines #3

    May 12, 2015 · Valve Train Noise. Valve and hydraulic lifter noise has a clicking sound that usually quiets down as you raise the engine RPM's. A lifter is what opens and closes intake and exhaust valves. These noises can be caused by worn or sticking hydraulic lifters. Sticking lifters in most cases is caused by a varnish build up on the lifter surfaces.

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