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740 front brakes - how to disconnect lines to caliper 700 1991

posted by  Son Of Bonzo on  Mon Sep 17 15:16 CST 2012
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last visit: Sun Feb 23 15:39 CST 2014
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I'm replacing my front calipers. How do I disconnect the brakes lines without twisting them? I don't understand why there is 2 connections for each hose. How can I tell if I have ABS or not? I can identify that they are Girling because of the brake pad. Thanks.








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    740 front brakes - how to disconnect lines to caliper 700 1991

    posted by  Steve on  Mon Sep 17 20:24 CST 2012
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    last visit: Fri Oct 24 07:16 CST 2014
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    You first disconnect the rubber hose at the fitting where it connects to the hard line coming in through the fender. That is invariably rusted solid. See the FAQ for details on how to get this loose but buy yourself some PBlaster and start soaking it.
    http://www.brickboard.com/FAQ/700-900/Brakes.htm#BrakeHoseandLineLongevityandReplacement

    It MIGHT be possible to remove the caliper body from the mounting frame, take out the pads, and rotate the entire caliper around as you unscrew it from the hose.
    --
    See the 700/900 "FAQ" at the menu bar top screen left side.








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      740 front brakes - how to disconnect lines to caliper 700 1991

      posted by  jerryc on  Tue Sep 18 22:33 CST 2012
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      I always do it by loosening the line at the caliper, then unscrewing the caliper. Leaving the junction of the hard and flex lines alone seems to have the best result.
      ABS; in the engine compartment, follow lines to where they go; if they exit the master and leave the area through panels to the brakes, no ABS; if they go to a box that's partly metallic silver and black plastic, about 6x6x4 with a lot of brake lines to and from it, and mounted just in front of either side shock tower, it's ABS.








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        740 front brakes - how to disconnect lines to caliper 700 1991

        posted by  Son Of Bonzo on  Fri Oct 12 17:52 CST 2012
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        last visit: Sun Feb 23 15:39 CST 2014
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        Hey guys I eventually got it done by spraying the crap out of everything with kroil. Then I had to clip one of the lines at the junction to the hard line, taking a deep 14 with a breaker bar, and an 11 open hex wrench situated so that it was against the tie rod end. Apply a quick hit of pressure on the breaker bar. Bam. Kinda scary cus I could've just as easily stripped the copper line nut, but luckily I didn't. Got it to work that way on both sides..

        Why the hell didn't they just reverse thread one of the parts so ... yeah..
        thanks!
        -cp







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