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I have a Frigidaire FWT425RHS0 model washer and it stated making noise while spinning. it is like a loud knocking sound.

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You can unplug the washer,remove the bottom panel and check the shocks to see if they are damaged but most of the time when this noise happens it's usually the spider gear and the part is around 250 to have to split the tubs and install a new basket that sits in between the inner and outer tubs,it would be cheaper in the long run to replace the washer instead of repairing it but that's up to you to decide.most of the time this happens from using to much detergent,the extra detergent eats at the metal that the gear is made of and it just falls apart,any front load washer you get you should be using 1/4 cup of H.E. detergent.good luck and i hope my opinion helps you out.

Posted on May 20, 2011

  • Biguggy May 26, 2011

    Many posts on many sites claim that the corrosion of the spiders is due to galvanic action. I do not agree, I believe it is primarily chemical corrosion.
    Should the corrosion have been galvanic between the stainless steel drum and the aluminium spider the majority of the corrosion would have been at the junction of the two metals i.e. at the ends of the arms. I have seen no photographs of spiders corroded in such a manner, nor read of any similar descriptions.

    Aluminium, and its alloys are corroded when immersed in an aqueous solution with a pH value above about 8.0 or below about 4.0 (nitric acid is a well known exception). All detergents have to be above about 8.0 or they would not work. The Material Safety Data Sheets put out by Proctor and Gamble state that the pH for one of the liquid ‘Tides’ is 8.0 and for one of the ‘Tide’ powdered detergents as 11.0. Bleach, (sodium hypochlorite) is also very corrosive to aluminium. I should add that for corrosion of the spider to take place these levels are considerably above the levels found in a washing machine during the wash/rinse phases of the cycle.

    Sodium carbonate (washing soda) and sodium percarbonate found in some laundry aids (Affresh and Oxi-Clean [powder]) are also corrosive to aluminium and its alloys, as is borax, provided the required concentrations are reached.

    I believe the mechanics of the corrosion are as follows.
    Even after the fastest spin small quantities of water will remain on the shaft and towards the centre of the spider. Any recesses in the spider close to the centre will aggravate this situation. This water will contain ‘contaminants’. Should sufficient of these ‘contaminants’ be present the pH of the mixture can, as evaporation takes place, rise to a level where corrosion will take place.

    Corroded spiders can be seen at: -

    and for a LG spider

    For information on galvanic corrosion there is a very good paper at: -

    For information on chemical corrosion of aluminium (or ‘micro galvanic corrosion as the author calls it, I grew up calling it ‘pitting corrosion) there is an informative paper at:

    The only front load washers readily available in North America that I am aware of that do not have recesses close to the centre are Miele and Speed Queen. However there are numerous complaints on the internet about foul odours from these machines, in their favour is the fact that spider failures are virtually impossible to find.

  • Sal DeAngelo May 28, 2011

    every home that i went to that had damaged spider gears all were using 3/4 to one whole cup of H.E. detergent and all of them had damaged or disintigrated spider gears,ive even found pieces of the gear lodged into the pump and snapping shocks so i know what i see handson so read and copy and paste whatever you want but like i say i know what i see and pulled two of them apart and old nasty smelly detergent was on both metal gears



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