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53 M37 still pops out of first gear under load?

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  • 53 M37 still pops out of first gear under load?

    Ok guys, looking for some of your experience to answer a question. I have new bearings in the stock c88671 transmission behind the stock 230 six engine. This past weekend I did the machining to repair the loose shifter pin and made a new cone washer for the spring underneath the shifter ball. Much better but under a load such as going up a good hill in four low it will still slowly walk out of first gear. I have also installed new shift rails in the trans top. What am I missing?

  • #2
    You probably did this, but did you replace the shift-rail detent springs?

    CD
    1949 B-1 PW (Gus)
    1955 C-3 PW (Woodrow)
    2001 Dodge 2500 (Dish...formerly Maney's Mopar)
    1978 Suzuki GS1000EC (fulfills the need...the need for speed)
    1954 Ford 860 tractor
    1966 Chrysler LS 16 sailboat (as yet un-named)
    UVA UVAM VIVENDO VARIA FITS

    Comment


    • #3
      I did not as I could not locate any. They appeared to be the same length and appeared to be same strength but maybe that is it. Any idea where to find some?

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      • #4
        If you have already inspected them and they are in good shape, it would seem you have done your duty. I assume the detent balls had no apparent wear either.

        It was a long shot, but I thought I would throw it out there.

        CD
        1949 B-1 PW (Gus)
        1955 C-3 PW (Woodrow)
        2001 Dodge 2500 (Dish...formerly Maney's Mopar)
        1978 Suzuki GS1000EC (fulfills the need...the need for speed)
        1954 Ford 860 tractor
        1966 Chrysler LS 16 sailboat (as yet un-named)
        UVA UVAM VIVENDO VARIA FITS

        Comment


        • #5
          Did you notice if the plastic inserts on the shift forks are in good shape ? I have seen some cases where the are missing.
          1955 C3PW
          1968 W100
          several parts trucks as well

          Comment

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