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      03-28-2014, 06:36 AM   #118
fe1rx
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Drives: 135i, 328i, Cayman S
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Quote:
Originally Posted by JSavela View Post
To those that have done this already, can it be done with the brake lines still connected? I'd rather avoid the hassle if I can.
Given the scale of dropping the rear subframe, disconnecting the rear brake lines is so simple and such a good idea that it doesn't even register on the hassle-meter. Why would you risk damaging a line when it is so easy to disconnect the lines without spilling a drop of fluid? Obviously the clamps need to be just tight enough to pinch off the flow. You can't do that with SS braided lines, but alternately you could block the pedal at half stroke to stop flow from the reservoir, bleed off rear pressure in the lines a the rear brake bleeder, then disconnect the lines without them dripping. Capping or at least bagging the ends of the lines is necessary to keep contamination out while you work. If it is really dirty under there, wash it and blow it down with air before disconnecting the lines.

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