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Engine Part(s) Identification 900 1994

posted by  Hussman on  Sat Jun 27 10:07 CST 2015
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last visit: Sun May 29 15:38 CST 2011
[RELATED]

I was replacing the heater control valve to correct a coolant leak and
in the process, noticed these two parts which seem to function together.

The one to the right, the black one is the one obviously damaged.
(ps this is not an actual pic of my 1994 940 standard engine)

There is a cable coming from it and an exposed spring on the inside.

Can someone tell me what they are called and what they do.
I've not noticed any drivability issues.

Thanks so much!
George









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    Engine Part(s) Identification 900 1994

    posted by  Hussman on  Sat Jun 27 12:18 CST 2015
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    last visit: Sun May 29 15:38 CST 2011
    [RELATED]

    This is the picture...

    https://www.brickboard.com/IMAGELIB/volvopic.htm?id=12160








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      Engine Part(s) Identification 900 1994

      posted by  Amarin on  Sat Jun 27 12:36 CST 2015
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      last visit: Thu Oct 23 22:42 CST 2014
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      Hi,

      The white one is the throttle spool to which the throttle cable from cabin is connected. The black one is the cruise control servo which has a vacuum activated diaphragm to "pull" the throttle spindle via cable.

      Regards,
      Amarin.








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        Engine Part(s) Identification 900 1994

        posted by  Hussman on  Sun Jun 28 11:26 CST 2015
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        last visit: Sun May 29 15:38 CST 2011
        [RELATED]

        Awesome ! Thank you both!

        Are there instructions on the Board how to "re-charge" the vacuum ?








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          Engine Part(s) Identification 900 1994

          posted by  spook on  Sun Jun 28 12:52 CST 2015
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          last visit: Fri Oct 24 08:06 CST 2014
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          Dear Hussman,

          Hope you're well. The black rubber cruise control servo does not have a "charge". When the vacuum hose is attached - and the engine is turned-on - the intake manifold generates vacuum.

          When cruise control is engaged, vacuum is supplied to the servo, which holds the throttle spool at the position required to hold the speed chosen.

          When cruise control is disengaged - by applying the brakes or using the switch on the control stalk - the vacuum is released and the servo releases.

          Hope this helps.

          Yours faithfully,

          Spook








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            Engine Part(s) Identification 900 1994

            posted by  Hussman on  Sun Jun 28 14:25 CST 2015
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            last visit: Sun May 29 15:38 CST 2011
            [RELATED]

            AWESOME !

            I jut replaced it from a part I pulled at a local salvage yard.

            Can't wait to try it!

            I've been without cruise control for years !!

            Hahahahahahah

            Thanks,
            Spook

            You ARE the man !







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