Squeaking powersteering hydraulic pump | FerrariChat

Squeaking powersteering hydraulic pump

Discussion in 'Mondial' started by stekkefun4, Jan 7, 2019.

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  1. stekkefun4

    stekkefun4 Formula 3
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    Nov 22, 2006
    2,232
    Belgium - Europe
    I was searching for this issue, but couldn't find it, so here I go:

    When turning the steering wheel on my 1992 Mondial T while the engine is running, you can hear a very loud squeaking noise coming from the area of the hydraulic pump for the powered steering. It's only when you turn the steering wheel, not when you leave it as it is. Stops when you stop turning the wheel.

    Do you guys think this in an engine out thing, or can it easily be accessed through the RH wheel area?

    Has anyone ever rebuilt a hydraulic pump?
     
    paulchua likes this.
  2. Wade

    Wade Three Time F1 World Champ
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    Mar 31, 2006
    32,793
    East Central, FL
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    Wade O.
    That's an age-old problem for most power steering systems. Traditionally, the main causes were/are low fluid or a slightly loose belt. An oil-soaked belt can do the same.

    But it'll be interesting to hear what you find out for the t.
     
    paulchua likes this.
  3. stekkefun4

    stekkefun4 Formula 3
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    Nov 22, 2006
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    There's still enough liquid in the reservoir and no leaks
     
  4. mike32

    mike32 F1 Veteran

    May 13, 2016
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    Isle of man- uk
    When was the last time the fluid was changed-
     
  5. stekkefun4

    stekkefun4 Formula 3
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    Nov 22, 2006
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    A couple of months ago
     
  6. mike32

    mike32 F1 Veteran

    May 13, 2016
    5,828
    Isle of man- uk
    The power steering on my Toyota has some sort of load/ unloading valve on its outlet. As the pump is turning all the time you might want to check the outlet to see if you have something similar- if the wheel is straight then it is not pumping, but when turning the wheel the pump has to produce pressure to turn the wheels, this being when you get your noise- might be a relief valve passing excess pressure. See if a screwed plug which might hide a valve and spring that needs a clean. The pump cannot be loaded and producing pressure all the time as the fluid would get overheated i think.
     
  7. paulchua

    paulchua Cat Herder
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    Jul 1, 2013
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    Paul Chua
    This happen to me as well, after my last engine out the problem went away...loose belt perhaps? Seems to happen only when cold.
     
  8. yelcab

    yelcab F1 World Champ
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    Nov 29, 2001
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    Mitchell Le
    benefit of a good tech, no doubt.

    OP, you need to tighten that belt.
     
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  9. MvT

    MvT F1 Rookie

    May 25, 2013
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    Tijn
    Maybe it is the cold? My 3 old company car has it too when cold already when it left the showroom. I noticed my new Alfa Romeo has it too now that it is colder.

    What does it do when you drive for 30min?
     
  10. JLF

    JLF Formula 3
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    Sep 8, 2009
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    Yup sounds like belt is a little loose or has fluid on it that makes slip.
     
  11. stekkefun4

    stekkefun4 Formula 3
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    Unfortunately weather doesn't allow me to go out for a spin at the moment :(
     
  12. paulchua

    paulchua Cat Herder
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    Jul 1, 2013
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    very true, I know this guy that's a credit to the community. I should introduce him to you (although you probably already know him)

    ;)
     
  13. MvT

    MvT F1 Rookie

    May 25, 2013
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    Stefan where exactly you are hearing the squealing? on top of your steering wheel or behind you?

    I guess also with cold, like the alternator belt, you can hear it when it is cold. that mean indeed tighten it up., but if it is from your steering wheel I cannot imagine it is a belt issue.
     
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  14. stekkefun4

    stekkefun4 Formula 3
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    Nov 22, 2006
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    Martijn, it's a Mondial T, the sound comes from the LH side of the engine, so the servo pump. Hopefully I can go out for a drive tomorrow if it doesn't rain
     
    paulchua likes this.

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