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Question DetailsAsked on 12/9/2016

How do you access the air vent mushroom float to remove the rubber sleeve on the float stem. The float sticks.

There is a leak under a LG model WM0642H front loading washer caused by the air vent float sticking open.

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2 Answers


Google this search phrase - how to replace mushroom air vent in LG washer

You will find several youtube videos showing where it typically is and how to change it out.

Might vary by model, but one ,odel I have seen at least you remove two back bottom screws on the bellows housing and slide the top cover toward the back to remove the float. Sometimes the issue is the float sticking due to soap residue or lint buildup on the valve stem - disassemble and throughly clean the parts several times (takes a lot of cleanign to remove gunked up detergent) and also down in the hole with a bushy, not exposed wire type, pipe cleaner - using kitchen vinegar and hot water as the "solvent".

Can solve it for awhile, though these vents are a chronic problem because they did not engineer it right - should have had a suds return drain tube to the drum, with the actual air vent float and exit to open air well above the drum like in the back panel, sort of like a periscope, so this problem would not occur. I have seen LG's where a repairman removed the float and attached the outlet of the bellows to a piece of flex tubing (like dishwasher or washer flex discharge hose) and ran it out the back and up the wall a few feet as a standpipe, so the suds and such would drop out and flow back down to the bellows. That is actually the way the LG front-loaders originally came - had a standpipe periscope vent and no float.

Parts list does not show individual sub-parts for the vent - the vent float assembly itself is replaced as a unit, the stem seal does not appear to be a separately orderable part. Vent is about $5-10 aftermarket or $9.95-16.95 list for OEM depending on model - local appliance parts company should probably stock it.

Note the most common cause of this leaking is use of non-HE detergent - you need to use HE (high efficiency) anti-suds detergent - and while the water will look slightly soapy and bubbly during the wash cycle, there should NOT be a significant amount of suds in the drum on a front-loader - if it is sudsy, you are using too much soap.

LOT of comments on the professional technician blogs about LG's (and some other brands too but nowhere near as much as for LG's) about trying the Tide anti-suds HE detergent - word of mouth is it does not build up as much and self-cleans during the rinse cycle better, reducing or eliminating vent leakage.

On the float - according to technician blogs there is also a shorter stem replacement part for some models (could not readily find if applies to your model - would require a check of service bulletins by a technician or parts store) - which apparently does not crud up and stick anywhere near as much. Did not say if it fits in the same bellows assembly or requires a new bellows or not - but one would think if a replacement "improved" part would have the same valve stem diameter and fit in the same bellows. If not, replacement bellows kit about $7-15 more.

Answered 3 years ago by LCD



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