Steering issue

Discussion in 'Downeast Boat General Discussion' started by LittleMac, Oct 6, 2017.

  1. LittleMac

    LittleMac Member

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    OK...here it goes....if anyone can truly diagnose this issue, dinner is on me.
    Boat---35 Duffy, 540 Cummins 8.3.
    Helm is smooth all directions at idle speeds. Wagner helm pump, Hydraulic. Once I put load on the rudder, she is still smooth turning to starboard, but "sticks" coming back to port with an ugly noise from the helm.
    Pulled pump and sent back to authorized service center---guy told me pump looked brand new, replaced some seals anyway and sent back to me.
    Reinstalled pump, bled system, same exact issue.
    This year decided to try new helm pump. Installed Capilano 1250. PIA as all mounting was different. Got it done, bled system.
    Steering smooth as can be at idle speed. both directions.
    Put load on rudder, maybe 10-12 knots, turn to port and back to center---no issue.
    Turn to starboard and then back to center----different noise but same issue---steering sticking going back to port from Starboard.
    Cylinder looks fine and the "sticking" definitely does not feel like air
    Any thoughts / help greatly appreciated.
    Patrick
     
  2. harpoon83

    harpoon83 Senior Member

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    Did you try pivoting the rudder to both sides with the ram disconnected? Maybe the rudder shaft isn't aligned right and is binding up. Or there is some play in it and once you are running the added pressure of the rudder makes it bind
     
  3. Toolate

    Toolate Captain

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    1 or 2 hydraulic pistons On the rudder post?
     
  4. Tunatown

    Tunatown Senior Member

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    Sounds like it's turning over more to the starboard side maybe going past the pivot point of leverage so it really strains the system getting past that point
     
  5. LittleMac

    LittleMac Member

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    couple of answers to comments above:
    Yes, had disconnected rudder from ram, rudder swings easily side to side. I can't feel play in the rudder, maybe need boat hauled to fully tell if there is play?
    There is 1 piston to the rudder post.
    Past the pivot point makes sense, but the "sticking" happens even when just a few degrees to stbd and then coming back to center---doesn't even have to be that hard over---but definitely worse the harder over I am.
    Thank you for the responses....
     
  6. ARC

    ARC Member

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    Could it be a crimped line that opens in one direction but not the other. An easy but risky way to check is to switch the lines on the steering ram. If it ‘s a line the problem will do to the other direction. But now left is right and right is left so I would do it in open water
     
    ARC,
  7. Adsprop

    Adsprop Member

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    Check your bolts in the ram. Check to see if piston is bent. Have someone run the boat and watch it while your running. Put your hand on the ram while turning see if you can feel anything and where it might be coming from. Let us know what happens
     
  8. Brooksie

    Brooksie Captain

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    It's a balanced ram, right? (With a rod coming out each end one attached to the arm one not)
    Still the Wagner ram or was that changed too?
    Sounds like a ram problem.
    "Sticks coming back to port" what about just going to port from centered?
    Is the ram set up to push or pull going to starboard?
     
  9. Parttime

    Parttime Senior Member

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    If you still have a Wagner ram, it could be the trunnion assembly. Worn
     
  10. El Mar

    El Mar Captain

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    Possible sticking check valve in the helm?
     
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