ScottR400D Posted January 25, 2017 Share Posted January 25, 2017 I would second the vacuum bleeder though its quote possible for them to pull air in around the bleed nipple thread, instead of drawing out the fluid, and give the false impression that there is a lot of air in the system. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted January 25, 2017 Share Posted January 25, 2017 you either need nipples with loctite on them as used by most OEM's now or use ptfe tape on your nipples. Link to comment Share on other sites More sharing options...
Pendennis Posted January 25, 2017 Share Posted January 25, 2017 I knew there was a reason why I did it the old fashioned way*rofl* Link to comment Share on other sites More sharing options...
ECR Posted January 25, 2017 Share Posted January 25, 2017 But if you use a Loctite type product on your brake nipples I'd use a thread sealer with a low breakaway torque rather than a conventional Loctite thread locker. Link to comment Share on other sites More sharing options...
alan c Posted January 25, 2017 Author Share Posted January 25, 2017 Sorry had some IT issues and not been able to post for 24 hours.To answer an earlier question I am using Mobil 1 DOT 4 fluid and it is all new unused and purchased very recently so I hope the quality of the fluid is not an issue. I am not ultra impressed with the bleed nipples on the front calipers so perhaps some sealer on the thread may help but will that make any difference if there is no leak once they have been done up.I don't have a vacuum bleeder but I will ask at work - we have a few useful brands in our portfolio - and if I can borrow one I will. We have a nice digital pressure system but it's very expensive and we don't have a demo one to hand where I am that I can borrow.I plan to talk to Redline about new seals for the master cylinder. Looking at the Caterham web site I think I have the standard one not the unrated AP one but it's not clear and my car was built in 93 so parts have changed a little since then.If I do get new seals how easy is it to replace them? Based in my performance so far it needs to be simple. Link to comment Share on other sites More sharing options...
Pendennis Posted January 25, 2017 Share Posted January 25, 2017 The Uprated MC has a red cable tie around it, of course that may of been cut off. There is an identification code on the MC body as well. The early Uprated MC reservoir mount was different from standard. If you decide your MC is at fault my advice would be buy the Uprated one seeing as you have the Uprated calipers. Redline don't or didn't when I asked (2016) provide the repair kit for the Uprated version, that is sourced via a motorsport team in North Wales of which the name I can't quite remember! Link to comment Share on other sites More sharing options...
Vintageant Posted November 3, 2019 Share Posted November 3, 2019 None of these posts addresses how to bleed brakes with two separate master brake cylinders, one for the front brakes, the other for the rear brakes, obviously activated by the single brake pedal. If bleeding one, how is the pressure in the other closed system compensated? Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted November 4, 2019 Area Representative Share Posted November 4, 2019 None of these posts addresses how to bleed brakes with two separate master brake cylinders, one for the front brakes, the other for the rear brakes, obviously activated by the single brake pedal. Vintageant,That will be because most Caterhams only have one brake master cylinder!I use a pressure bleeder, bleeding each circuit individually. Link to comment Share on other sites More sharing options...
Area Representative Geoff Brown Posted November 4, 2019 Area Representative Share Posted November 4, 2019 A 'gentle' tap of the caliper with a plastic headed hammer while bleeding will dislodge the reluctant air bubble(s).Well it worked for me! Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted November 4, 2019 Member Share Posted November 4, 2019 How would you bleed a single system... pedal and shout, positive pressure, negative pressure?I use a pressure bleeder, bleeding each circuit individually.Sounds right to me.Jonathan Link to comment Share on other sites More sharing options...
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