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Thread: Drive shaft seals

  1. #26
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    I agree with you Stuey

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  2. #27
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    I've put in new seals, o-rings, dressed the running surface on the inner end of the driveshaft, lubed the driveshaft end as I gently eased it onto the gearbox, used new rollpins (I do every time), faced the "C" section of the rollpin away from the gearbox used sealant on the rollpin, bounced around on one foot uttering incantations the Gods and All That is Sacred - and still the driveshafts leaked.

    But look on the bright side, if there a little oil going out then not much will be going in,

    Ex

    (In retrospect, the part about bouncing about on one foot was more likely to do with something heavy I dropped...)
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  3. #28
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    A little oil would be great but this one almost flows out. So far restricting driving to short trips only. Motor took 3 years to get done, bodywork a year, so anything else will only be a minor blip I guess.

  4. #29
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    I was mistaken & the roll pins do need sealant....apology to those I disagreed with earlier.
    When I fit the R16 transmission I'm currently re-building I will be doing using & using Permatex No2 on the splines & there pin unless someone offers a better solution.

  5. #30
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    Are you replacing the seals on the driveshaft? If so did you purchase them locally?

  6. #31
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    It was a very good exercise/problem to think about, Stuey. I think Col and I have combined to come up with the solution to keep 352 'boxes leak free. Get new parts every time ! Hehehehehe! Bloody Renault.

    Don't know what Permatex No2 is, but I would say if you try to use any sealant on those splines you are only creating problems for yourself next time they need to come apart. The inboard driveshaft joint will most likely separate and you will end up with a bigger can of worms on your hands.

    That said, if you really want to go down that path, I would suggest using some really sticky grease, potentially something that is not petrol based, like silicone grease. That is so sticky, every time you use it you end up wearing it for a couple of weeks or so. Doesn't dissolve in anything known to man either, so you can't wash it with anything. I have some Molykote something something, can't remember the numbers, comes in a tube.

    Back to the mechanical problems, I really think that diff carriers should be changed to stop those pesky leaks if they are so bad. Anything else won't last. Or maybe they could be sleeved with some more serious material than the factory left in there? Potentially exxy, needs precise machining/boring afterwards, more problems. You would need to re-do the pinion/crown mesh again and so on.

    If the driveshaft/outdrive splines are worn, you also need to look at those. The outdrive is actually the diff sun gear, so more headaches.

    At this point, you may as well start thinking about a replacement 'box.

    About the rollpins, I don't know why couldn't renault just use a circlip spring like everybody else and avoid putting a through hole across the splines. Bloody french ingenierie de merde.
    ACHTUNG ALLES LOOKENPEEPERS

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  7. #32
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    Quote Originally Posted by geedee View Post
    Are you replacing the seals on the driveshaft? If so did you purchase them locally?
    Yes from Hi-Spec as well as new 'O' rings sourced there as well.

  8. #33
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    Please excuse the duplication of as well in previous post!
    Anyone have a LHD gear selector shaft, lever & front housing assembly?
    This would help with fitting my new rebuilt transmission to an already next to new R16 Cross flow engine in my 1949 Lt 15.
    Runs on the road but fine tuning in this gear selection area would be a major plus. JG.

  9. #34
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    Quote Originally Posted by geedee View Post
    A little oil would be great but this one almost flows out. So far restricting driving to short trips only. Motor took 3 years to get done, bodywork a year, so anything else will only be a minor blip I guess.
    Do you want for me to send you an R12 gearbox?



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    In the Shed(s):
    R8 (1.4 motor, 4 shock rear end), Dauphine, Pugeot 404

    In the Past:
    Dauphine X2, R10 X lots, R12 X2, R16TS, R17TS

  10. #35
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    Thanks for the offer but have been away to see the soup in Lake Eyre, most impressive and have not driven the 15 for a couple of weeks. Will check a time for my local specialist to pull her [ the 15 ] apart. Latest issue appears to be a slipping clutch. Was fine when the main shaft seal was replaced and no sign of a leak in this area now. Looks like a new clutch and pressure plate as well as the new driveshaft seals to come. With regard to the gearbox this 15 only has 80,000 miles on the clock but started life as an auto but is now a manual. Who knows the history of this box? So will just work to fix what we have until we reach for the lighter and petrol.

  11. #36
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    Look on the bright side
    At least you are getting exercise bobbing down to check the leak

    Went on a Land Rover trip and had huge laughs by tipping oil under my mates landie

    He couldn't work out where it was coming from
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  12. #37
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    As soon as splines are worn will never properly seal.
    Any rocking on spline then they are worn. They have to be tight as a fishes....to be OK
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  13. #38
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    Went on a Land Rover trip and had huge laughs by tipping oil under my mates landie
    I'm surprised anyone picked up the oil leak. All British vehicles leak oil, by design the cynics would say.
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  14. #39
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    Quote Originally Posted by robmac View Post
    I'm surprised anyone picked up the oil leak. All British vehicles leak oil, by design the cynics would say.

    In fact you never have to do an oil change on any part
    Last edited by driven; 22nd June 2019 at 08:24 PM.

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