Volvo RWD 140-160 Forum

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Dragging clutch 140-160 1972

posted by  p-more on  Sat Apr 16 06:40 CST 2005
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last visit: Fri Oct 24 13:03 CST 2014
[RELATED]

Recently I'm experiencing grinding gears when engaging reverse. It seems to make no difference how long I hold the clutch disengaged. There is possibly slightly increased resistance from the synchro when engaging first, but not much. The transmission seems to shift normally and smoothly when accelerating through the gears. Adjusting the free-play did not help. 1972 145, 25k miles since M-41 conversion with new clutch and overhauled transmission, and new cable.

Any suggestions?








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    Dragging clutch 140-160 1972

    posted by  someone claiming to be Ira Eisenberg on  Mon Apr 18 06:29 CST 2005 [RELATED]

    I had the same problem. The really simple fix suggested by Matt worked for me. The gears must be moving slowly when transmission is cold and putting it in 2nd stops the movement. Then to reverse.








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    Dragging clutch 140-160 1972

    posted by  Chris Mullet on  Sat Apr 16 07:27 CST 2005
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    last visit: Fri Oct 24 09:08 CST 2014
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    When you did the concersion, did you put a new pilot bearing in? It may be starting to freeze up.

    Another thing that can happen is that the clutch fork/arm cracks and weakens near the pivot point such that when you push on the pedal you don't get full disengagement.








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      Dragging clutch 140-160 1972

      posted by  p-more on  Sat Apr 16 10:05 CST 2005
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      last visit: Fri Oct 24 13:03 CST 2014
      [RELATED]

      I did replace the pilot bearing. I'll try to get a look at the release arm.








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        Dragging clutch 140-160 1972

        uid 779's pic
        posted by  matt b on  Sun Apr 17 02:38 CST 2005
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        last visit: Tue Oct 14 16:33 CST 2014
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        I don't think you'll be able to get a look in there... of course, try, but if your car shifts normally in all other gears, and you can put it in forward gears when stopped with the engine running... I doubt that's your problem.
        --
        -Matt I ♥ my ♂








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    Dragging clutch 140-160 1972

    uid 779's pic
    posted by  matt b on  Sat Apr 16 06:53 CST 2005
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    last visit: Tue Oct 14 16:33 CST 2014
    [RELATED]

    Assuming the clutch is good and in proper adjustment, I'd wager to guess its gotta be in the transmission. That said, I just sort of assume that they all do that.

    Get in the habit of selecting second before you put it in reverse (leave the clutch depressed). See if that helps anyhow. You'll probably have to start doing that to get 'er in first soon too.


    --
    -Matt I ♥ my ♂








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      Dragging clutch 140-160 1972

      uid 14369's pic
      posted by  KLR142 on  Sat Apr 16 20:22 CST 2005
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      last visit: Mon May 9 12:44 CST 2011
      [RELATED]

      Yeah, both of the 140s I have do that. I consider it normal, and maybe worn out synchros(are there synchros for reverse?). I just put it into reverse real slow... And sometimes the teeth rub and slow down so I can engage, or sometimes I just go crunch. Sometimes it doesn't do it...
      --
      Kyle - '68 142? - Oregon Volvo Tuners?








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        Dragging clutch 140-160 1972

        uid 5322's pic
        posted by  alschnertz on  Sun Apr 17 12:59 CST 2005
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        last visit: Fri Oct 24 10:32 CST 2014
        [RELATED]

        Definately not normal, and there is no syncro on the reverse gear.

        If you can't get it into reverse without grinding after stopped for a couple of seconds, it would seem that you are not getting disengagement of the gearbox via the clutch. The countershaft is still spinning and causing the grinding while engaging reverse. Since reverse is the only gear without a syncronizer, it is the easiest to indicate a clutch not releasing fully. I agree that you may be able to stop the spinning countershaft by shifting into second prior to shifting to reverse, but the bottom line is you are not getting the gearbox to disengage fully.

        --
        '86 745T, '72 144E, '70 145S, '68 220S, '60 544







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