I used the homemade rachet wrench worked perfectly on a very tight filter housing. I didn't use a hairdryer to heat it up but boiled up some hot water and poured it over the filter housing before removal
Thanks for this useful how to demo! While you talk about the O-rings and not tightening the filter housing too much, it's useful to recognize that the tightness of the filter housing DOES NOT affect the O-ring seal. The housing just needs to be hand tightened so that it stays in place. The O-rings are compressed by the press-in fitting and this is not directly affected by 'tightening' the filter housing into the top. So it is not like a tapered pipe fitting or even a fitting with a rubber washer or gasket where the clamping pressure is part of what makes the seal. Another tip is to inspect the O-ring carefully before re-assempling the filter. If there are any cracks or irregularities or if the O-ring is "old" just replace it, they are not expensive. Be sure to carefully clean the surfaces that the O-ring will touch to remove any debris that might interfere with a good seal. Then apply a very light coating of silicone grease to the O-ring and re-install it, and then screw the filter housing back in hand tight.
Hi Steve, you're welcome. 😁 Depending on the design of the filter housing and matching cap, and placement of the O-ring seals, the tightness could in fact affect the seal... if you look closely at 06:51 at the filter housings I'm using, they have two O-ring seals fitted to a tapered housing. The black housing cap also has a matching tapered seat inside the cap... thus if not tightened enough, will leak (hand tight is enough)... these are not precision machined surfaces so there needs to be some compression of the O-ring to take up any irregularities... thus tightness of the filter housing affects the seal. Also, if you look at this video here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-layYqEYAiH8.html at the 7 minute 6 second mark, you'll see another variation of O-ring seal placement. This one presses up against the underside of the filter cap and if not tightened enough, will leak (hand tight is enough).... again, the tightness of the filter housing affects the seal. I agree with what you say, where tightness doesn't affect the performance of the O-ring seal, but only if the O-ring and matching seating surface are 'parallel' (or otherwise said, where the O-ring and support structure slip into an appropriately sized bore, with the correct clearance). Agreed... a quick check for cracks and debris is so easy to do and often times overlooked. Thanks for all the info. It's so great that we can all share knowledge and learn together.
