Question about Simrad AP35 GPS Receiver

4 Answers

I AP 35 Setup

I have a ap 35 that will not pass the rudder test.The unit shows correct rudder on the rudder angle function of the autopilot.When the unit hits about 13 degrees of rudder angle it fails in either direction.

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  • beanier Aug 14, 2008

    Are you referring to the rudder calibration setup values on page 75 of the manual? If so, the values have been set up and are being stored properly in memory.

  • beanier Aug 14, 2008

    We have a AP 35 Auto pilot that fails the rudder center test We have checked the rudder calibration in memory ok this sysem is driven by solid state relays to a constant running pump Teh rudder indicater works in tha the angle indicator of the auto pilot is showing correct angle

  • beanier Aug 14, 2008

    we have an AP 35 Autopilot the will not pass the rudder center test THE calibration in the memory is correct The rudder feedback works correctly in rudder angle mode

  • beanier Aug 14, 2008

    I have an AP 35 Auto pilot It will not pass the rudderr feed back centering test The rudder feedback reads ok in the rudder angle screen.I already have the manual do u have any suggestions This unit drives solenoids the steering functions ok

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1. Check all connections.
2. Check the alignment as per the
installation instructions
3. Replace rudder feedback unit

if not work try:
1. Check all connections again
2. Check Rudder FB transm. link.
3. Check Drive unit motor/brushes.
4. Replace junction unit Power PCB.

Posted on Aug 14, 2008

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I have heard of this problem before from one of my clients. we tried a lot to get it work properly but nothing helped. finally replacing the rudder feed back unit is the only thing which helps in resolving this problem.so i would you to replace the rudder feed back unit either then trying solutions that doesnot help to solve this problem.thanks.

Posted on Aug 14, 2008

  • tech expert12 Aug 14, 2008

    Did the solutions from all of us experts solved your problem if not then let us know the current updates so all the fixya experts can assist you further.

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Ensure you are setting correct rudder value.

Posted on Aug 14, 2008

  • Ginko
    Ginko Aug 14, 2008

    here is

    AP35 Autopilot Instruction Manualfind instructions on how to check rudder values stored on memory in the manual.



  • Ginko
    Ginko Aug 14, 2008

    Yes, if rudder calibration values are OK, then there is a real problem with
    calibration, it can be a mechanical problem or a faulty rudder
    feedback unit. Follow procedure at page 93 of user manual :

    AP35 Autopilot Instruction Manual
    to troubleshoot the error, if you cannot get rid of the error message
    you may have to replace the rudder feedback unit or to have the unit
    inspected by a technician.

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Yep, if rudder calibration values are OK, then there is a real problem with calibration, it can be a mechanical problem or a faulty rudder feedback unit. Follow procedure at page 93 of user manual :
AP35 Autopilot Instruction Manualto troubleshoot the error, if you cannot get rid of the error message you may have to replace the rudder feedback unit or to have the unit inspected by a technician.

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