Re: Drive axle spindle nut - NCRS Discussion Boards

Re: Drive axle spindle nut

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  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43193

    Re: Drive axle spindle nut

    Wayne-----

    I absolutely agree with you. In fact, I was remiss in not mentioning that possibility. I guess I just hate to think that there are "mechanics" out there that would resort to such a bogus and inferior repair methodology. But, I KNOW that this repair methodology is all-to-common for Corvette rear bearing repairs, particualrly by some unsphisticated shade-tree mechanics and independent repair shops that don't specialize in Corvette repair. I believe that the reasoning is that the rears should be just like the fronts and can be set up similarly, avoiding a lot of work which would otherwise have to be done if spacer and shim were used. This repair strategy also "eliminates" the need for a lot of special tools.

    As you indicate, if this is what has previously occurred(and its highly likely considering the 'loose' nut syndrome), and the spindle nut is torqued down now to 100 ft/lbs, the bearings will be placed into MASSIVE preload, destroying them. However, it probably wouldn't be much of a loss (assuming that the now 'locked up' spindle was recognized before the car was put into service)since I wouldn't recommend reusing these bearings at this point, anyway.
    In Appreciation of John Hinckley
  • Patrick T.
    Expired
    • September 30, 1999
    • 1286

    #2
    Re: Drive axle spindle nut

    Joe, I just reassembled the spindle after a bearing change and used the spacer and shim previously installed. After torqueing to 100 ft. lbs. as the specs call for, the nut was 3 or 4 threads below the hole for the cotter pin.Everything seems to move fine, with no excessive play and no effort required to turn the torque arm in a 360 degree circle. A couple months ago,when I installed new bushings in the strut rods, I torqued the support stud nut to 85 lbs, and it also was below the cotter pin hole. After driving a few weeks, I noticed the nut had loosened up to the cotter pin hole. Is it reasonable to expect that the spindle nut could do the same thing? Thanks.

    Comment

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

      #3
      Re: Drive axle spindle nut

      Maybe I dont understand what you are asking but after a nut is tightened and a cotter key is installed I dont see how it lostens up or backs off. If this is happening the threads are stripped.

      Comment

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

        #4
        Re: Drive axle spindle nut

        Joe, you would probably be surprised how many I see like that, most often failed too. I know of a well respected mechanic that would do it that way every time.

        Comment

        • Patrick T.
          Expired
          • September 30, 1999
          • 1286

          #5
          Re: Drive axle spindle nut

          Wayne, thanks for the response. The bushings I installed were new and the struts were 32 years old and I had to really press hard to get them into the struts. After a few costly mistakes involving stripped threads, I am very carefull about this. The threads are not stripped, but after thinking about it for a while, maybe they loosened up after a few weeks because they needed to be "broken in". Anyway, there is no harm done and I'll just retorque them again and see what happens. Patrick

          Comment

          • Dave #24235

            #6
            Don't forget to check the end play

            Using the spacer and shim previously installed without checking end play can be trouble. Bearings vary - thats why shim kits are available. Check for correct end play with the spindle nut torqued down. - Dave

            Comment

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