Is it the bottom of these and the pollen filter lids that need sealing, usually?

Or is it under this, there seems to be a rope like seal under there which seems to be in good nick?

Can't take the screws out so rather limited TBH!! ;)

H

The lids and screw hole can leak, as can the seal to the fans, so I’m afraid it’s both that could leak

I did exactly this job today... personally I put RTV under the top edge of the metal filter housing/ cover on both sides, and rtv'd the screw holes. I changed the filters a week or so ago, and they were sodden, there was a fair amount of water in there, but it hadn't got past the secondary seal (the square one in your second picture). I'm not sure it's the filter lids (put a long rubber band around the raised lip on the housing), but i RTVd the screw holes on the lids. I may RTV the top edge if i'm bored. While you're in that far blow out the drain holes in the body work with some compressed air

romanrob wrote:

I did exactly this job today... personally I put RTV under the top edge of the metal filter housing/ cover on both sides, and rtv'd the screw holes.

Did the same with the sealant on Saturday just gone - the drains were also completely blocked.