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67 Parking Brake

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  • Brian White

    67 Parking Brake

    Greetings All!

    I return to the well of knowledge seeking advice, experiences, and humorous tales before I jump into another project. Like everything else I've done with a corvette, this will be the first time for me. The knowledge that many of you carry around without a second thought is like treasure to me. And your willingness to share that knowledge with complete strangers is an impressive display of generousity. I wish the rest of the world worked as well.

    The parking brake on my 67 doesn't work very well. It's got a little grab left, but not much. I figure it's time to rebuild the thing. I'd just as soon not have to pull the rear axles for this, and I gather that it can be done without doing so, but it looks a little tight and finicky in there.

    So I'm anxious to hear from people who have done this procedure, and to learn what I should be careful to do (and careful to avoid). I've got the service manuals of course, but I find that supplementing them with a few real world stories, makes a huge difference for me.

    Thank you for reading this, and thanks in advance to everyone who contributes their experiences. I hope no one will be reluctant to add their two cents just because someone else already replied. I enjoy hearing from everyone, and I manage to learn something everytime someone responds.

    Cheers!
  • Robert C.
    Expired
    • December 1, 1993
    • 1153

    #2
    Re: 67 Parking Brake

    Are you sure that the emergency brake is adjusted all the way? The screw under the car on the brake line assembly adjusts to tighten the cable. If it is screwed out all the way its time for a emerg. brake overhaul at the rear hubs.

    Comment

    • Bill D.
      Expired
      • January 1, 1985
      • 76

      #3
      Re: 67 Parking Brake

      Emergency brakes are adjusted at the rear wheel just like an old drum brake (thats what they are) only smaller. Final adjustment for full release is then done at the cable equalizer. Changing shoes and hardware without axle removal is only for the strong willed and patient! Make sure you use stainless hardware too.

      Comment

      • Michael W.
        Expired
        • April 1, 1997
        • 4290

        #4
        Re: 67 Parking Brake

        If you do all the adjustments as recommended above and still find that you have insufficient parking brake (remembering that they are not all that good to start with) make sure that you mark the orientation of your disks with respect with the hubs before you take them off. Drill out the rivets, back off the adjusters, and remove the disks. If you see that there is still meat on the shoes (I bet there is) then you would gain very little by changing them. You may just need to loosen the mechanism up and remove surface rust. As WB has said these are just mini drum brakes, however they normally NEVER get applied while the car is moving (Yes, I know, I used to do that in the school parking lot too) so the shoes should never wear out.

        Mike


        Quebec NCRS Chapter

        Comment

        • Bill D.
          Expired
          • January 1, 1985
          • 76

          #5
          Re: 67 Parking Brake

          As Mike said, you would NEVER apply while moving, would you? Been there too! Don't expect it to perform beyond design. Remember that it is a parking brake to hold the vehicle at rest. It is not designed to stop the vehicle (emergency brake) or hold against the awesome torque of our beloved machines. Also good advice about indexing rotors if you have to remove them. Have fun! WB

          Comment

          • Ed M.
            Expired
            • August 31, 1988
            • 59

            #6
            Re: 67 Parking Brake

            Yes, Brian, you can do it on the car. All you need are the hands of a Lilliputian and the patience of Job. I did it and learned some new words. So did my son when he came in the barn to tell me supper was ready, and, just at that moment, the spring that I thought I finally had in place, shot across the work area never to be seen again. Have fun. Ed

            Comment

            • Robert C.
              Expired
              • December 1, 1993
              • 1153

              #7
              Re: 67 Parking Brake

              Went to a car show last summer about 30 miles north of Dallas. Left in a hurry. After 25 miles I noticed my temp gauge was reading 240d.!!! Also noticed that I had driven 70mph for 25 miles with my parking brake on.. How stupid can you get... but can you believe it the ol parking brake still works fine!!

              Comment

              • Wayne W.
                Extremely Frequent Poster
                • April 30, 1982
                • 3605

                #8
                Re: 67 Parking Brake

                You can buy a tool to help with the process, but its still no fun. You really shouldn`t have to index the rotors as they only fit one way correctly. That is with the adjuster holes open.

                Comment

                • Bill D.
                  Expired
                  • January 1, 1985
                  • 76

                  #9
                  Re: 67 Parking Brake

                  Wayne is correct if the rotors are still riveted on.If they are no longer riveted,they have been field serviced or replaced. When this is done,proper reinstallation requires repositioning the rotors for minimum runout. Sometimes you are lucky and the holes still line up,but not always! If you are not experiencing any problems with air pumping into the calipers then runout is most likely within spec. Indexing is good preventive medicine!The tool that Wayne mentioned does help the flying spring syndrome,but it is still no fun.

                  Comment

                  • Brian White

                    #10
                    Thanks Re: 67 Parking Brake

                    Thanks to everyone who responded.

                    I found an article about replacing the parking brake in an issue of Corvette Fever from a few years ago. It also looks like a version of that story is available on the zip products internet site:

                    The page you were looking for was not found or has been deleted. Search Corvette Parts by year or category instead.


                    The manual from stainless steel brake corporation claims that a properly functioning parking brake is strong enough to stall the corvette in low gear. Does this jive with your experience? Several people have mentioned that the parking brake isn't all that strong.

                    Thanks again for helping.

                    Cheers!

                    Comment

                    • Michael W.
                      Expired
                      • April 1, 1997
                      • 4290

                      #11
                      Re: Thanks Re: 67 Parking Brake

                      Brian,

                      I heard the same story about being able to stall the engine, sounds to me like it could do with a good tune up!

                      Mike


                      NCRS Quebec chapter

                      Comment

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