Rich Posted April 29, 2018 Report Share Posted April 29, 2018 The last time I bled the brakes with new calipers the weight of the tubing on the nipple kept turning it more than I wanted. As a result I think air was getting in past the threads on the nipple. Anyone know how I can stop this happening for when I bleed the new ones on the MX5? Quote Link to comment Share on other sites More sharing options...
Rich Posted May 1, 2018 Author Report Share Posted May 1, 2018 Any ideas, hoping to finish it this morning? Quote Link to comment Share on other sites More sharing options...
Tony Posted May 1, 2018 Report Share Posted May 1, 2018 Try not to open it too far....In truth you really need someone in the car pumping the brake. Quote Link to comment Share on other sites More sharing options...
Rich Posted May 1, 2018 Author Report Share Posted May 1, 2018 Yes I know but the problem is the nipples are new and I find the weight of the tubing spins it open further than I want. How can I stop that happening? I've got a one man bleed kit and going to try gravity bleeding first. Quote Link to comment Share on other sites More sharing options...
Tony Posted May 1, 2018 Report Share Posted May 1, 2018 Providing the peddle is down when the nipple is locked then there won't be any air in the system. Quote Link to comment Share on other sites More sharing options...
Rich Posted May 1, 2018 Author Report Share Posted May 1, 2018 Thanks but that didn't really answer my question. As they're new bleed nipples they spin very easily and I wanted to stop that. I used the tube with a non return valve and opened the nipple 1/4 turn, then tried to wedge the spanner to stop movement but fluid was still getting past the threads. Once the calipers were full I tapped them gently with a mallet and pumped the pedal a few times to get the fluid through. Then I wedged the pedal down on the last stroke and did the nipple up. The tube has no bubbles in but as fluid had dropped from the threads I thought air had probably got back in. Surprisingly on a drive around the block the pedal felt ok and it stopped well. I didn't have to pump it like you do when air is in the system. I've got new pads on too so that will make it feel a little spongey. I'd still be happier bringing the car over to you for a fluid change which I'll PM you about. At least I'll know it's been done properly. Quote Link to comment Share on other sites More sharing options...
Tony Posted May 1, 2018 Report Share Posted May 1, 2018 Normally if it feels ok then it is ok but your welcome to come over and let us do it. Quote Link to comment Share on other sites More sharing options...
Rich Posted May 1, 2018 Author Report Share Posted May 1, 2018 Fluid hasn't been changed for at least 5 years so it needs doing, what came out wasn't clean. It's just a pain doing it on the driveway! Quote Link to comment Share on other sites More sharing options...
Tony Posted May 1, 2018 Report Share Posted May 1, 2018 Shame i used to have a tester that checks the boiling point but i left it at STS. Quote Link to comment Share on other sites More sharing options...
Rich Posted May 1, 2018 Author Report Share Posted May 1, 2018 They look expensive, shame you left it there. I wonder how many garages actually use them? Quote Link to comment Share on other sites More sharing options...
Tony Posted May 3, 2018 Report Share Posted May 3, 2018 Not sure but i did on every brake work and services... Quote Link to comment Share on other sites More sharing options...
SMARTLY Posted May 3, 2018 Report Share Posted May 3, 2018 My Ford garage checks the brake fluid each time it's serviced, and reports back on it Quote Link to comment Share on other sites More sharing options...
Tony Posted May 3, 2018 Report Share Posted May 3, 2018 Fair play......It's an area often ignored. Quote Link to comment Share on other sites More sharing options...
Rich Posted May 3, 2018 Author Report Share Posted May 3, 2018 Gareth did a good job and used a bleeder connected to the air lines. I didn't actually notice any difference in braking on the drive home but feel better knowing it's got fresh fluid and done properly. I have to admit I've not really changed brake (or clutch) fluid according to the service schedules and only done it if it really needs doing. I'll have a look on the service sheet for the Lexus and see if they put anything about the fluid. Quote Link to comment Share on other sites More sharing options...
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