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I have a Karcher 520M pressure washer. Just recently, it has…

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I have a Karcher 520M...
I have a Karcher 520M pressure washer. Just recently, it has begun to make noise after a few minutes of running. What happens is, it appears as though the cooling fan on the bottom of the machine is rubbing against the case. This causes the pressure to drop off and the machine to cycle on and off. It sounds to me like there's too much end play in the motor shaft? Is there a bearing that's gone bad? Any help would be appreciated.
Submitted: 2 years ago.Category: Small Engine
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Answered in 1 day by:
3/14/2016
Technician: Briggs-Fan, Small Engine Technician replied 2 years ago
Briggs-Fan
Briggs-Fan, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1,282
Experience: over 15 years experience in small engine repair, multiple certifications
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Hi my name is ***** ***** welcome to Just Answer here is a diagram of your pressure washers motor , and part number 6 is the ball bearing but part 2 could be a issue as well

http://www.ereplacementparts.com/karcher-520m-diplus-10697000-pressure-washer-parts-c-33388_33389_33462.html

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Customer reply replied 2 years ago
I just ordered the lower ball bearing and the insulation for my pressure washer. Hopefully, this will cure the problem?
Technician: Briggs-Fan, Small Engine Technician replied 2 years ago

If the ball bearing is worn or seizing then yes . Did you disassemble the pressure washer and check it prior to ordering it ?

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Technician: Briggs-Fan, Small Engine Technician replied 2 years ago

If your hearing s noise it could be the old ball bearings , they do go bad and will squeal etc

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Customer reply replied 2 years ago
No. I didn't take the machine apart yet. The noise simply sounds like the cooling fan is rubbing against the case. I attribute this noise to a bad bearing or (since you mentioned it) faulty insulation material. These parts are fairly inexpensive and totally worth a try.
Technician: Briggs-Fan, Small Engine Technician replied 2 years ago

I agree , once you remove the old bearing , see how smoothly it roles etc .

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