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Tool Talk Discussion Forum

Karcher HDS950

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Cas

04-06-2008 09:25:30

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I accidently posted in the tractor forum. I have a Karcher HDS950 pressure washer that just hums when turned on. I put a new capacitator on and no luck. Would any one know how to test the German made motor?

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Dick2

04-07-2008 02:57:19

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Re: Karcher HDS950 in reply to Cas, 04-06-2008 09:25:30

Fella asked me one: "Do you know why it hums?"

"No" ===== ===

"Because it doesn't know the words".

Other than that, it sounds like you need a new washer. Repairing it will probabl cost as much as a new one.

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04-06-2008 17:08:58

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Re: Karcher HDS950 in reply to Cas, 04-06-2008 09:25:30

Any time an electric motor just hums, it generally means that what ever it's turning is seized, in this case, I'll bet that it's the water pump that is seized. I'll also bet that there's nothing wrong with the motor itself.

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Cas

04-06-2008 19:03:59

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Re: Karcher HDS950 in reply to bo, 04-06-2008 17:08:58

I disconnected the pump and fan but the motor still hums.

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04-06-2008 19:57:36

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Re: Karcher HDS950 in reply to Cas, 04-06-2008 19:03:59

Ok, now I don't know. I'd say the capacitor but you already replaced it. Can you grab the shaft and carefully give a spin as it's trying to start...might tell you if one of the bearings on the rotor ends is seizing up.

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Cas

04-06-2008 19:04:03

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Re: Karcher HDS950 in reply to bo, 04-06-2008 17:08:58

I disconnected the pump and fan but the motor still hums.

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Cas

04-06-2008 20:46:40

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Re: Karcher HDS950 in reply to Cas, 04-06-2008 19:04:03

I tried to spin the shaft with electric on.
It just hummed and seemed to be drawing a lot of current and the shaft really locked up.

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04-07-2008 07:11:03

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Re: Karcher HDS950 in reply to Cas, 04-06-2008 20:46:40

check the rear and front bearings....a good bearing place will fix you up if one or both are bad.

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Cas

04-08-2008 09:05:49

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Re: Karcher HDS950 in reply to bo, 04-07-2008 07:11:03

Bo,

Thanks for the suggestion. I will replace the
bearings.

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