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2004 Volvo Penta power steering problems

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  • 2004 Volvo Penta power steering problems

    2004 Volvo dp SM power steering issues
    Yesterday, 11:40 PM
    Steering is stiff at all speeds when minimal pressure is applied to wheel. With a hard jerk to wheel, power assist kicks in.

    Have done or tested the following:
    Replaced steering cable
    Verified cable and actuator move freely
    Replaced fluid
    Pump is quiet and works perfect once the actuator engages the ram (both directions)

    Other observations:
    When engine is off actuator slides freely back and forth from stop to stop (about Ĺ inch)
    When engine is started actuator returns to center position and will only move about 1/8 inch
    If manual pressure is applied to actuator in either direction the power assist will engage or
    If you jerk the wheel the power assist will kick in.

    These conditions exist at idle speed, neutral or while on plane. It appears that the actuator requires more force than necessary to engage. I have been to a Volvo dealer and they are not sure if it is the pump or actuator and could not give quote. Can you tell me with the information provided if I have a bad actuator or pump? Thank you for your help

    Drive
    DP-SM 1.95 (M22)
    3868913
    4202083553

    Transom
    TSK SX-MHP
    3868850
    4151033226

  • #2
    Not a VP guy but maybe my comment will bring up others.
    The ram should work the same as Merc, the cable must be installed in the tube with next to no play. On the Merc there are slots (used to hold tube while tightening cable nut) which must face vertical once nut is tight.

    To find out if there is a pump problem, all you need is a high pressure gauge. Connect the gauge to the pump and pressure should build in the 1000 psi area.

    Here is Merc's which may help with some insight
    http://www.boatfix.com/merc/servmanl/14/14a6.pdf
    94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
    95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
    07 SeaDoo GTX
    Raw Water Pump Maintenance
    Merc Adults Only
    G-Dad always said "First Liar doesn't stand a chance"

    Comment


    • #3
      Thanks, My next step before buying a new actuator will be to pressure test the pump. My understanding is that a low pressure condition can cause the shuttle valve in the actuator to be stiff.
      As noted, I did install a new cable and the slots are vertical. What exactly is meant by "the cable must be installed in the tube with next to no play." There is no adjustment on the cable that I am aware of...

      Comment


      • #4
        You don't want the outer jacket to have play in it when the nut is clamped down
        94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
        95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
        07 SeaDoo GTX
        Raw Water Pump Maintenance
        Merc Adults Only
        G-Dad always said "First Liar doesn't stand a chance"

        Comment


        • #5
          10/4 good buddy, thanks

          Comment


          • #6
            All Dodge
            Follow-up on this posting. Bit the bullet and purchased a new power steering actuator. Same results, stiff steering at all speeds. Also purchased a pressure tester for the pump and found the following results:

            Engine idle with deadhead valve opened -150 psi. (Normal I think)

            Engine at 1500 rpm valve open. 300 psi

            Engine idle valve closed. 1400 psi

            Engine idle with actuator manually forced all the way to retracted position and held. Maximum pressure 150 psi. Doesn't this low pressure point to a bad actuator?

            Also, do you know where I can find the VIP shop manual or info that provides testing procedures for this actuator?

            Thanks

            Comment


            • #7
              Sign up today
              To me it sounds like your steering cable is not moving the valve inside the steering actuator.

              Don't know where to get the VP manual
              94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
              95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
              07 SeaDoo GTX
              Raw Water Pump Maintenance
              Merc Adults Only
              G-Dad always said "First Liar doesn't stand a chance"

              Comment

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