Thread Number: 95362  /  Tag: Modern Automatic Washers
Corroded, broken spiders are not just for front loaders
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Post# 1200212   2/25/2024 at 22:05 by combo52 (50 Year Repair Tech Beltsville,Md)        

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Broken spider on a six-year-old GE 24 inch top load stack,, cold water, cheap detergent, and never any bleach.

And the aluminum spider is not bolded to a stainless steel drum so much for the theory of electrolytic corrosion

We replaced the tub assembly, hopefully they’ll get some more life out of it.


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Post# 1200237 , Reply# 1   2/26/2024 at 09:48 by me (Essex, UK)        

You can get the same type of corrosion if someone makes the mistake of using stainless steel screws to repair the hull of a wooden boat, instead of using brass marine grade screws (actually a silicon copper alloy).

The stopping (filler) covering the screw head, plus the wood it is screwed into excluding most of the oxygen, and the sea water provides an electrolyte, creating the conditions required for crevice corrosion, with areas of lower oxygen concentration becoming anodic and rusting away and the low oxygen also prevents the stainless steel forming a new passivation layer Also know as oxygen concentration cell corrosion.

That grime coating the spider from not using enough decent detergent etc as you say is what has destroyed the aluminium spider.

www.corrosionpedia.com/de...



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