alcal Posted August 2, 2018 Share Posted August 2, 2018 I see from my service book that I should change the clutch fluid in my Sigma 140 every two years.Any tips for doing this ? Access to the bleed nipple looks bleeding tight from above and below.Is it me or the search facility on this site that's completely useless ? Link to comment Share on other sites More sharing options...
andyl Posted August 2, 2018 Share Posted August 2, 2018 Personally my view is if it works leave it alone. I can see the need to change the brake fluid though.Yes I have to agree the search does not seem to isolate what I am searching for! Link to comment Share on other sites More sharing options...
MADMALC Posted August 2, 2018 Share Posted August 2, 2018 It is just the same as bleeding the brakes.If you can not get a spanner on the nipple to loosen then use a socket on an extension to 'crack' it. Then a spanner for the open/close process. If still in trouble feed the tube down the centre of the socket and use the socket with your fingers to open/close during bleeding then tighten with the extension when done. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 2, 2018 Member Share Posted August 2, 2018 I'd search like this: https://www.google.com/search?q=site:lotus7.club+clutch+bleed+sigmahttps://www.google.com/search?q=site:lotus7.club+clutch+fluid+sigmaDo those return anything more useful?Jonathan Link to comment Share on other sites More sharing options...
alcal Posted August 4, 2018 Author Share Posted August 4, 2018 Thanks Jonathon. There was some useful stuff there but why couldn't I access it from this site?Looking again at the bleed nipple, it has a plastic open/close key which I can just about reach from above. As long as this hasn't seized I should be able to manage. Link to comment Share on other sites More sharing options...
aerobod - near CYYC Posted August 4, 2018 Share Posted August 4, 2018 If you have the 8mm bleed nipple just poking through the bellhousing, a long reach socket with 1/2 to 2/3 of the middle of the body ground away allows the bleed tube to be fitted while still being able to loosen or tighten the nipple, this is the one I adapted: Link to comment Share on other sites More sharing options...
Jim 123 Posted August 4, 2018 Share Posted August 4, 2018 Aerobod a work of genius! Link to comment Share on other sites More sharing options...
Blue C7 Posted August 5, 2018 Share Posted August 5, 2018 I think one of the reasons for changing the fluid is moisture. You can buy a tester and check the moister content (also useful for the tin top) Link to comment Share on other sites More sharing options...
alcal Posted August 6, 2018 Author Share Posted August 6, 2018 That's clever aerobod. Mine doesn't have a conventional nipple though - it's a black plastic device with a little open/close lever.Blue C7 - I think you are on to something. I had been cautioned not to rely on a moisture content meter for brake fluid as it doesn't accurately measure boiling point and this is safety critical. Ferodo sell a device to measure boiling point but I think it costs about £800. I can't see that the clutch fluid will boil however so I think I'll invest in a new gadget. Link to comment Share on other sites More sharing options...
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