740 turbodiesel gasket between turbo and airfilter tube?

Discussion in 'Volvo 740' started by viktor weisshaeupl, Sep 4, 2005.

  1. When I was looking under the hood of my 1989 turbodiesel van I saw that oil
    was leaking from the ventilation on top of the engine in the lid above the
    valves. The rubber tube from there goes into a metal manifold(?) which is
    attached to the turboloader on one end and to a plastic tube from the air
    filter on the other end, that means all air taken in goes through it. I was
    surprised to find out that this manifold is not sitting tight on the
    turboloader but is a bit loose. There is a kind of spring mechanism keeping
    it in place though. That means that dirty air can enter the engine and the
    turboloader after the filter. In my Haynes manual I could not find any info
    on which kind of gasket is there. Does anybody know? Any pitfalls?

    Viktor Weisshäupl, Vienna, Austria
    viktor weisshaeupl, Sep 4, 2005
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  2. viktor weisshaeupl

    James Sweet Guest

    What's a turboloader? I'm having trouble picturing what part you're
    referring to, I've only ever seen one intact 700 TD engine but I don't
    recall there being anything unusual about it.
    James Sweet, Sep 4, 2005
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  3. viktor weisshaeupl

    Nomen Nescio Guest

    I mean the air compressor driven by exhaust gases blowing air in the engine.
    Sorry for my not so perfect technical English. The turbo compressor aspirates
    air from the air filter box. The aspiration metal tube is connected to another
    metal tube which brings air from the air filter box.

    I was in a Volvo shop this afternoon and saw in the spare part program that
    there is a rubber seal. I will change it, since the parts seem to be too loose,
    so probably the rubber seal is broken.

    Nomen Nescio, Sep 5, 2005
  4. viktor weisshaeupl

    James Sweet Guest

    Ah, turbocharger is the word you're looking for, or just turbo.
    If you take it apart it should become apparent what the problem is, you're
    probably right that the rubber seal has either fallen apart or just moved
    out of place.
    James Sweet, Sep 5, 2005
  5. Today I did it. There was no more trace of a rubber seal on the
    turbocharger´s metal tube.. The 15 $ Volvo seal looked just like any
    ordinary rubber ring.....
    Thanx for your input
    viktor weisshaeupl, Sep 8, 2005
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