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How Do You Bleed the Trim Hydraulic System?

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  • How Do You Bleed the Trim Hydraulic System?

    I just replaced my trim motor/pump and it works fine except it seems now that I have some air trapped in the system. As I raise it and lower it, the motor will whine and seem to be pumping air. It does this intermittently. I tried lowering it and raising it a few times, each time removing the fill cap and letting a nice puff of air out. I have the old type with the stupid fill cap on the side of the motor and this makes for a huge mess! Just wondering if anyone can give me any pointers on the right way to do this. Thanks.
    If I'd never seen the sunshine I would not curse the rain.

  • #2
    Re: How Do You Bleed the Trim Hydraulic System?

    This is a Merc? Volvo Penta, OMC, Seahorse, Scott Atwater, British Seagull?

    Inquiring minds need to know!



    Cheers,


    Rick
    1987 FourWinns 211 Liberator, Originally an OMC 460 King Cobra.
    Re-powered in 2006 with a 1997 Mercruiser 7.4L Bravo III

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    • #3
      Re: How Do You Bleed the Trim Hydraulic System?

      If it's an outdrive, just run it up and down. They are self bleeding. Just keep the reservoir topped off.
      Don S.


      Please, no PM's (Private Messages) regarding boat/engine problems.
      That is what the forums are for.
      Only forum/moderator issues will be answered in PM's.

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      • #4
        Sign up today
        Re: How Do You Bleed the Trim Hydraulic System?

        sorry, should have included this: it is a volvo 290 outdrive with the old style motor/pump.
        If I'd never seen the sunshine I would not curse the rain.

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