What's that thing on the shaft of a longtail

Discussion in 'DIY Marinizing' started by Ed-H, Mar 13, 2010.

  1. Ed-H
    Joined: Mar 2010
    Posts: 18
    Likes: 1, Points: 0, Legacy Rep: 13
    Location: Montana

    Ed-H Junior Member

    I have noticed on some of the larger long tails something that appears to possibly be some sort of reservoir up near where the drive shaft attaches to the motor. Can anyone clarify what this thing is, why it is there, where one can obtain them?
     
  2. Frosty

    Frosty Previous Member

    Every longtail is different, many engines many ideas from different regions, Malays have them too, and probably Indonesia.


    The bigger ones have a heat exchanger with a pump on the front crank pully , a discharge pipe just hangs over the side.

    I saw a guy just the other day attach his alternator belt while the engine was running, he has obviously done that before almost faster than the eye.

    How he gets it off I have no idea.
     
  3. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    Open the alternator tightening screw, turn the alternator towards the engine. Now you can place the belt, turn alternator back "out" and the new belt starts to run, tighten the screw..

    ps.. count your fingers before an after. If there's a missmatch don't do it again ;)
     
  4. Frosty

    Frosty Previous Member

    No --he did it in a split second, decided he wanted to charge the battery, picked up the belt and popped it on. All while the engine was fast idle.

    He put the belt on the double water pump pulley first then slipped it onto the alt.

    I suppose he does'nt need to charge the batter all the time being a diesel and NO other electrics.
     
  5. licensedtochill
    Joined: Apr 2009
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    Location: georgia

    licensedtochill New Member

    I believe it is an oiling cup for the bearings inside of the motor to shaft adapter.
     
  6. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    Might just be the alternator being loosed to turn at will allready and just the weight of it being adequate to give the friction for the belt?
     
  7. Chris Ostlind

    Chris Ostlind Previous Member

    Something like this?

    http://www.youtube.com/watch?v=Xzo6a16IZgg

    I learned this trick when I worked as a VW/Porsche mechanic back in the early 70's. Crappy technique can send a screwdriver flying across the shop, or worse.
     
  8. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler


  9. Ed-H
    Joined: Mar 2010
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    Location: Montana

    Ed-H Junior Member

    Thanks L2C, I thought that might be what it was. I seem to remember reading about some type of expansion chamber for when the lube gets heated and expands, so as not to blow out seals. Does this sound like a possibility?
     
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