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Brake rod clevis nuts

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  • Brake rod clevis nuts

    Why is it that many of the A's which find their way here for service, have loose brake rod nuts? This seems nuts to me!!
    3~ Tudor's & 1~ Coupe
    Henry Ford said,
    "It's all nuts and bolts"
    "Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."

    Mitch's Auto Service ctr

  • #2
    I'm not being harsh, but most new Model A owners didn't or don't make their living using hand tools and lack experience in making things tight.

    I suspect that is why the questions about torque specs for valve covers, oil pans, steering bolts etc., etc.

    Explaining to someone what 'tight' feels like it is like explaining what pizza tastes like.

    This is probably the best reason for a new guy to join a club and hopefully find a mentor to learn from.

    $.02, JB


    • tbirdtbird
      tbirdtbird commented
      Editing a comment
      that is why we are all here, to help out the next guy

  • #3
    Loose worn out threads? the rods do shake alot !


    • #4
      We were working on a MGTC and almost every wood screw holding the doors and other parts were loose, including the windshield frame !! Perhaps modern cars have lured us in to a false sense of "no inspection / maintenance" security.


      • #5
        They should have put that in the maintenance schedule... check brake rod jam nuts with a 1/2" wrench. Maybe rusty threads would help. I'll have to remember to grab my blue loctite when I get under there to grease later today, mine seem to be loose sometimes.


        • #6
          Could it be related to chased threads?

          The factory rods and nuts I am pretty sure use the tighter tolerance threads. If someone chases with normal taps then they make them loose. This might increase the chances of the nuts working loose.


          • #7
            It is best to hold the clevis tight when tightning the jamb nut so everything stays lined up and the nut stays tight.


            • #8
              Well the threads on these cars are not worn or chased to where they won't hold if locked to the clevis. The threaded rods have no play when screwed into the ends. I think it is just a mental mistake, basically forgotten about but why on so many cars? That many brain farts?
              3~ Tudor's & 1~ Coupe
              Henry Ford said,
              "It's all nuts and bolts"
              "Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."

              Mitch's Auto Service ctr


              • CarlG
                CarlG commented
                Editing a comment
                You are lucky to have just loose nuts. Several of mine were just flat out not there at all.

                I think that the reasoning for loose or missing nuts is that "what are they there for anyway?" It's not like the clevis is going to loosen on it's own once it is installed.

                That being as it may, all my brake rods now have a clevis WITH lock nuts installed and properly tightened

              • BILL WILLIAMSON
                BILL WILLIAMSON commented
                Editing a comment
                BRAIN FARTS/LAZINESS/IGNORANCE/ETC, abound & are EASY to spot!
                Six point Tubing Wrenches work well for tightening the jamb nuts.
                Last edited by BILL WILLIAMSON; 11-14-2017, 11:32 AM.

            • #9
              Ya know Mitch, thinking about this logically, it makes sense that some or all are loose.

              I mean, think about this, the poor guy that is setting up the brakes is up and down, and up and down, so many times adjusting here and adjusting there and around to the other side and by the time he has pedal and actual brakes, there is a wipe of the sweat from the brow and a deep sigh at finally getting the thrice damned thing stopping. So what does he do, well, he has the floorboard already back in or he couldn't easily drive it to know he now has brakes, throws the rug or rubber mat in the car, flops down in his easy chair, pops another tab and takes a looooooong pull of that cold brew and passes out. Now, he wakes up and with another sigh of relief, remembers he has brakes, and with a grin on his face gets in and drives a few miles with that wiiiiide grin and when he parks it after that last test drive the smile is still so wide his tonsils are showing and with it now parked and the gas shut off he goes inside and announces it to the family they can finally go for that long awaited drive and plops down at the dinner table and eats.

              The need to return under the car and tighten all those jam nuts never enters his mind, numb with relief.
              You wana look waaay far up da road and plan yer route because the brakes are far more of a suggestion than a command!


              • #10
                Well that was an excellent bit of pontification!! You should write stories for a living!
                Eastern Connecticut


                • Mitch
                  Mitch commented
                  Editing a comment
                  Bill you got that right, it was a breath taking novel for sure.
                  I was hoping that it would not end

              • #11
                I have noticed that the nuts and bolts on a lot of the model A,s are tighten the right amount. I think the ones working on these cars just do not know. A lot of them are not mechanics. The rear axle nut comes to mind. Like the one the other day he said he tightened it then back it off to the first slot in the nut for the cotter key.

                Of the 25 A,s that I have owned, never had a brake rod nut come loose. They just were not tight.


                • #12
                  Okay so I figured I would add onto this thread my next Peeve.

                  How come I see so many cars with the light switch installed upside down? The wires should come out the top side as the bottom side has that little drain hole. Apparently Henry knew the box would leak huh

                  The bail wire doesn't even fit properly when it's upside down but it does hold it

                  I had a vehicle come in today with both issues.. loose brake rod nuts and an upside down switch.
                  3~ Tudor's & 1~ Coupe
                  Henry Ford said,
                  "It's all nuts and bolts"
                  "Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."

                  Mitch's Auto Service ctr


                  • 2manycars
                    2manycars commented
                    Editing a comment
                    Well if your nuts are loose and you are upside down, you are in big trouble.

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