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dazed and confused
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Removing rubber brake lines
Should I bleed the brake system system dry of fluid before removing/ replacing the rubber brake lines or just depress and hold the brake pedal down "with a stick"? I replaced standard bleed nipples with Speed bleeders using the brake pedal method; just wanted to be sure this approach would work when approaching the brake lines.
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89 Carrera 3.2 Targa 2011 BMW 335d 2013 BMW X3 3.5 80 911 SC Weissach Coupe (Sold) 
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04-03-2010, 04:47 AM
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Registered
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Holding the pedal down will work fine for the brake line replacement.
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Pete 79 911SC RoW "Tornadoes come out of frikkin nowhere. One minute everything is all sunshine and puppies the next thing you know you've got flying cows".- Stomachmonkey |
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04-03-2010, 06:15 AM
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Senior Advisor
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It will still make a mess, have everything ready to swap over the lines.
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08 Cayenne Turbo |
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04-03-2010, 12:41 PM
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Registered
Join Date: Aug 2008
Location: sectors R&N, SE Pa
Posts: 3,117
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Just did this like 2 or 3 weeks ago for the first time.
Hold down half way (or best you can) with 2x4 on the brake pedal against another 2x4 along the front of the seat. I just did this and barley lost a few drops from each line. A LOT less than I was expecting. I have all this extra ATE blue now I never used. I did a short pressure bleed on each before I started (recommended but not sure why). I found left over gold in the line/caliper, but which quickly drained to reveal the ATE blue that was already in the line. Then I propped the pedal down, then started the swap a wheel at a time. Then 3 bleeds - sat over nite, did one last one - used 1 liter can. I did not put fluid in the pressure bottle - I would de-pressurize and top off the res each time. You can do it. on edit: BTW - I did not bleed the slave cyl, but I'd swear the pedal action is better.
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Dan '87 Targa Carrera 3.2 - Fabspeed Cat Bypass, M&K Muffler, SW Chip Venetian Blue |
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04-03-2010, 02:57 PM
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Northern Motorhead
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I just replaced my complete brake system including calipers,master cylinder,front hard lines and stainless flex hoses all around and i survived the ordeal ... lol
In my case,the following did not apply ... Like Pete says,depress the brake pedal down a few inches with a 2x4 and you will hardly lose anything ! All you have to do afterwards is open your bleeders and gravity bleed them and then have someone pump the brakes a few times for a final round of bleeding. Phil
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Cheers Phil 89 Coupe,Black,95 3.6 engine and the list goes on ... 1983 944 SP2 race car PCA #96 |
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04-03-2010, 05:17 PM
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RETIRED
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I have ATE Blue and Gold on the shelf. I switch colors every change. When the color changes at the bleeder, I know I be done....
Just swap the lines and then bleed. I like the two person bleed system. One a pumpin' the other a bleedin'.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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04-03-2010, 05:26 PM
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"LC"
1979 Porsche 911SC
Da cab
