alpha one outdrive - hit log

Discussion in 'Sterndrives' started by rollyh, Sep 6, 2010.

  1. rollyh
    Joined: Sep 2010
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    rollyh newbe to site

    oil leak

    I have a question I had a new lower end put in my alpha one it is leaking oil were the shift shaft come out of the upper gear case when they put it in they said they checked it is that somthing that should have been replaced
     
  2. IMP-ish
    Joined: Jan 2011
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    IMP-ish powerboater

    Sounds like a minor manufacturing defect - the shift shaft seal of the lower unit shouldn't go bad esp. if new 6 months ago.
     
  3. rollyh
    Joined: Sep 2010
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    rollyh newbe to site

    no the leak looks like it is coming from the top gear case or the bell housing shift shaft could that be ? is it something the shop should have done when putting together
     
  4. IMP-ish
    Joined: Jan 2011
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    IMP-ish powerboater

    It's been a year since I pulled an alpha off last. If memory serves, the shift cable end from the transom assembly rides in a slot in the upper unit. That is transferred by a rod with "U" end to turn the shift shaft. That shift shaft "L" comes up through the upper unit plate, but the shift shaft oil seal is on the lower. Unless I'm misremembering, the lube may be coming from another place and only collecting on the shift cable. How much lube is leaking out?
     
  5. CDK
    Joined: Aug 2007
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    CDK retired engineer

    No rollyh, the shift shaft comes nowhere near the upper gear case.

    Oil can leak from 2 places only: the upper seal around the drive shaft or the oil passage between the upper and lower case, where the should be an O-ring glued to one of the two surfaces prior to assembly.
     

  6. rollyh
    Joined: Sep 2010
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    Location: mo

    rollyh newbe to site

    I looked a little better and there is a hole just above the shift shaft on the upper gear case were it realy looks like oil coming from.the shop I had put ujoint in said they will take apart could that be bad seal from taking out ujoints
     
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