40/40 membrane replacement help.

Hi all, I’m struggling to get the end circlips on the end of my membrane housing. I’ve replaced the membrane, put in the O rings  and housing and tapped with a hammer as suggested but the circlips aren’t fitting ! Any help gratefully received thanks James. 

If the circlips aren't fitting in their groove then the membrane isn't seated properly. Try to lubricate the o rings with some silicone grease or a thin smear of Vaseline.

silicone grease is the only way to do it properly, been there before with the same problem and the grease solved it

Thanks guys, I’ve been using petroleum jelly, is this where I’m going wrong?

Same principle although this is a 4021

Thanks. 

You need to have the o ring seated on the end cap. Then apply equal pressure all around and push down. 

Trying knocking it in from the sides rather than the centre. 

I have found dry lube spray helps when tapping the clips in they slide onto place a lot easier 

Thanks guys, it’s all sorted and running sweet. Cheers. 

Jimmy O said:

Thanks guys, it’s all sorted and running sweet. Cheers. 

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So please tell us how you sorted the problem out. Telling us enables us all to learn from others experiences. Thanks.

I had the RO seated correctly, it was simply a case of the end caps needing a good hard tap with a club hammer and I’m sure the silicone helped too, after this the circlips fitted in perfectly. My tap water is around 200, the RO is bringing it down to 4/5 so working as it should. Thanks again for all the advice, James. 

Im having terrible trouble getting the end cap on mine.ive used the club hammer to get the cap down so that the groove the white ring clip sits into is exposed...but i cant get the end cap down far enough so the clip will fit on...im walloping the cap with the hammer but its just not going any further...can anyone help??? ?