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Technomar 90 with Arneson Drive Furuno AP rudder reference bad

Discussion in 'Technical Discussion' started by marinemods, Nov 10, 2018.

  1. marinemods, Nov 10, 2018
    #1
    marinemods

    marinemods New Member

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    Aug 1, 2018
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    Location:
    Miami, FL
    I am getting incorrect rudder reference indication on both the Furuno NavPilot LCD Display and Analog Display. They read the same but it seems there are dead spots when turning stb to port and back. I am assuming it is the Rudder reference sensor however I am unable to locate the sensor. The boat has Arneson drives. Anyone have any idea where the rudder ref signal comes from?
  2. T.K., Nov 11, 2018
    #2
    T.K.

    T.K. Senior Member

    Joined:
    Jan 31, 2007
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    Location:
    Cairo - Egypt
    The rudder reference sensor will certainly be on the rudder table, either fitted to a steering arm between both rudders or fitted to one of the rudder actuators if your rudders are not connected together with a steering arm.
  3. marinemods, Nov 11, 2018
    #3
    marinemods

    marinemods New Member

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    Location:
    Miami, FL
    These are Arneson Surface Drives (no rudders). From what I understand any sort of trim sensors are connected via mechanical cable to the inside engine room.
  4. marinemods, Nov 13, 2018
    #4
    marinemods

    marinemods New Member

    Joined:
    Aug 1, 2018
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    Location:
    Miami, FL
    Moving along ... found what I am assuming is the turn position indicator made by twin disc p/n 1020316. It is essentially a geared 2K Pot center tap. I found one of the wires lose when I connected it it goes 20 Deg Port when I am hard Stb and center is right on 0. It look's like someone has been in the unit and played with it. Does anyone have any documentation on this? TIA