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Thread: 722.370 leaking at the bowden cable

  1. #1
    Senior Member mercepor's Avatar
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    722.370 leaking at the bowden cable

    Normally i should remove the oil pan in order to disassemble the cable and change the o-ring.

    In this vid, the guy catch quite easily the holding arm (gearbox side at 1:27').

    My question: Can i change the o-ring without removing the oil pan?
    (With the gearbox in place in the car)

    https://youtu.be/z-mjwg1-Wzs

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    Re: 722.370 leaking at the bowden cable

    I think you linked to a different video by accident? Kent never shows how to actually fix the leaks in that video above, he just points at the leak areas.


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  4. #3
    Senior Member mercepor's Avatar
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    Re: 722.370 leaking at the bowden cable

    Indeed, sorry

    https://youtu.be/7fTFDQ4Dwug

    This would be the right video.
    Thx


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    Re: 722.370 leaking at the bowden cable

    I have replaced this O-ring on a W124 with M119 / 722.3 with the transmission in the car, but it isn't fun. I believe I had drained the fluid and dropped the pan, but it was years ago so I don't remember details. With the pan on OR off, it's not fun getting the cable connected to the metal rod. After you think it's connected, pull on the ball end of the cable and confirm there is spring pressure pulling it back in after you pull out by hand. If not - do it all over again.

    If there are other leaks on the transmission besides this, I'd consider pulling the whole transmission out and re-sealing everything on the workbench. There are about a dozen total seals on the 722.3 and it's nice to just change everything at once and not worry about it for another decade. With a lift you can have the transmission out in ~2 hours, reinstalled in ~3 hours, plus a few hours to re-seal on the bench.


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    Re: 722.370 leaking at the bowden cable

    Quote Originally Posted by gsxr View Post
    I think you linked to a different video by accident? Kent never shows how to actually fix the leaks in that video above, he just points at the leak areas.

    You need to have a word with your Uncle about changing that !!

  8. #6
    Senior Member mercepor's Avatar
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    Re: 722.370 leaking at the bowden cable

    Thank you Dave!
    In fact, the whole transmission was recently overhauled, all seals changed, but this one is leaking. It is under guarantee, but the shop is quite far from me, it doesn't make sense to travel 500km for this oring....

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    Senior Member duuder's Avatar
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    Re: 722.370 leaking at the bowden cable

    I'm having a similar issue after getting it rebuilt a little less than a year ago. Waiting to put it on a lift to see what's going on

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    Re: 722.370 leaking at the bowden cable

    Quote Originally Posted by mercepor View Post
    Thank you Dave!
    In fact, the whole transmission was recently overhauled, all seals changed, but this one is leaking. It is under guarantee, but the shop is quite far from me, it doesn't make sense to travel 500km for this oring....
    If you can find SOME excuse to make the trip... 500km is almost worth it. I think you may need to drain the pan before attempting to change the O-ring, and if the pan is drained, it's not much more work to lower the pan if necessary. You can re-use the pan gasket. If you attempt the job, let us know how it goes!


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