Wasatch7 Posted November 5, 2012 Share Posted November 5, 2012 (edited) So I was changing out my old calipers on my 76 280Z since one was dragging. The first side went fine, but when I put the second on and tried to bleed the brakes it started spraying fluid from the bottom of the fitting as if it wasn't sealing or something. I thought it just wasn't tight enough but it finally just snapped when I tried to bend it back into the caliper. So I know I need a hard line that is 3/16'' and has fittings that are M10x1.00 and from what I could tell it is a double flared line. Here is the problem. Everywhere that I have looked, these lines with this thread only come in the bubble flare and I am wondering if that would work or if I would need to custom make my own line. Also once I get a new line on there will I need to adjust the proportioning valve since the reservoir ran dry from not having a line connected on there? Thanks!! Edited November 5, 2012 by Wasatch7 Quote Link to comment Share on other sites More sharing options...
beermanpete Posted November 5, 2012 Share Posted November 5, 2012 The bubble flare won't work. The auto part stores should have pre-made lines with the metric fittings and inverse double flare ready to go. They do here in Los Angeles anyhow. O'Reilly has an 8" long line that has the correct ends and flare available from their website: http://www.oreillyauto.com/site/c/detail/AGS1/PAJ308/N0834.oap?ck=Search_brake+line_N0834_-1_2666&keyword=brake+line&pt=N0834&ppt=C0066 If you cannot easily get lines with the correct flare you can buy bulk line and flare the ends your self re-using the old fittings. Another option is to buy a pre-made length just for the tubing and cut the ends off and then flare it your self. The proportioning valve does not needs any attention. Simply bleed the brakes when you are finished installing the new lines. Quote Link to comment Share on other sites More sharing options...
Miles Posted November 5, 2012 Share Posted November 5, 2012 10mm x 1.0 brake double flare hard lines are available from Pep Boys etc. Since you ran the master cylinder dry you will need to fill it and then bleed the air out of it. Just run some clear 1/8 plastic tubing from the bleeders back into the MC tanks. Use something to hold the hoses in the MC tanks so they don't pull out while pumping the brakes to bleed the MC. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted November 5, 2012 Share Posted November 5, 2012 (edited) Also don't pump fast when you bleed the master (or any brakes for that matter). If you pump fast while bleeding the master you'll aerate the fluid, then pump that air down towards the calipers when you bleed the brakes again. BTW bending that little hard line is a ***** to do without kinking it, so be careful. Edited November 5, 2012 by JMortensen Quote Link to comment Share on other sites More sharing options...
Wasatch7 Posted November 6, 2012 Author Share Posted November 6, 2012 Thank you guys very much! for some reason I couldnt find that line when I was on Oreilly's website. Thanks for the info on bleeding the MC. This will really help me get this car rolling again!! Thanks guys!! Quote Link to comment Share on other sites More sharing options...
Wasatch7 Posted November 6, 2012 Author Share Posted November 6, 2012 Also is there anyway to tell that I have the line tight enough? I dont want to tighten it up too much and have it snap like the last one, or leak at all. Quote Link to comment Share on other sites More sharing options...
Leon Posted November 6, 2012 Share Posted November 6, 2012 Also is there anyway to tell that I have the line tight enough? I dont want to tighten it up too much and have it snap like the last one, or leak at all. Look up the torque specs in the Brake section of the (free!) FSM. Quote Link to comment Share on other sites More sharing options...
Wasatch7 Posted November 6, 2012 Author Share Posted November 6, 2012 Wait sorry where is that?? Quote Link to comment Share on other sites More sharing options...
Leon Posted November 6, 2012 Share Posted November 6, 2012 In the Reference section of xenons30.com. Side-note: I think it would benefit everyone if the forum rules have a requirement of downloading the FSM prior to posting. Quote Link to comment Share on other sites More sharing options...
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