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GE PDW7800J00cc dishwasher Odd rumbling sound

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Posted: Sat Aug 29th, 2009 06:22 am

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matt832
Senior Apprentice Appliantologist

Joined:	Tue Apr 4th, 2006
Location:	Michigan USA
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My Ge PWD7800 is making a weird sort of rumbling sound when it's washing, sort of sounds like the spray arm is loose. But I pulled the spray arm out and ran it but it still makes the noise when washing, draining it's not there since the drain pump is running.

I guess the only thing it could be is the pump, it vaguely sounds like a cavitating pump. Amy ideas/ solutions short of tearing everything apart? Am I looking in the wrong area?

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Posted: Sat Aug 29th, 2009 06:57 am

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RegUS_PatOff
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link PM'd

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Posted: Sat Aug 29th, 2009 07:01 am

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Pegi
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Check this out....

The sound is almost always caused by a worn docking cone “O” ring on the main conduit. When the docking cone “O” ring wears, the mid level spray arm conduit is no longer constrained and it can vibrate against the docking cone, making the “growling” or vibrating sound. The recommended repair for this problem is to replace the WD12X10059 (titanium) or WD12X10121 (grey) docking cone.

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Posted: Mon Sep 14th, 2009 04:11 am

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davidg
Master Appliantologist

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Take the kick plate off and make no parts of the motor, pump or solonoid is resting on the floor when running or not. I have seen the pump solonoid cause this problem; there is very close clearance to the floor on these.

Last edited on Mon Sep 14th, 2009 04:12 am by davidg

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Posted: Mon Sep 14th, 2009 05:36 am

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matt832
Senior Apprentice Appliantologist

Joined:	Tue Apr 4th, 2006
Location:	Michigan USA
Posts:	28
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Thanks for the tip, but this is definitely in the tub. It's odd, now it comes and goes. I examined the docking ring as Pegi suggested, it looks fine, and I felt it and after that the noise went away. Now it's returned as I mentioned occasionally. Weird.

I guess the next step is to replace the O ring.

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