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Thread: Electric trim fail

  1. #1
    Senior Member Wheels's Avatar
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    Oct 2010
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    Default Electric trim fail

    Hi,
    My Model IV trim motor stopped moving in the down position one day a while back. I held the trim button down hard for a moment and it actuated the trim tab. So I think it is the switch. I read about the motor failing with excessive grease contaminating motor electrical, but I'm starting here. Do I need to disassemble this switch wiring to clean contacts? Are these things soldered into the chinaman hat switch? Ideas? comments?
    Thank you in advance.
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  2. #2
    Senior Member efwd's Avatar
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    Default Re: Electric trim fail

    Replace. Of coarse thats after you have verified all your wires are connected appropriately.
    Read AeroElectric chapter on switches. The book is free Online, Just have to download.

  3. #3
    Senior Member kmach's Avatar
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    Cupar, SK, Canada CLC4 Loon Creek Airfield
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    Default Re: Electric trim fail

    switch the switch, couldn't resist.

    I suspect the switch, I think I am on my third switch, its the consul mounted one.
    The contacts in the switch arc and burn , there only good for so many cycles.
    Kevin,

    Kitfox Outback
    912 ULS
    Airmaster AP332CTFH-WWR70W
    Summit Aircraft Wheel Skis
    C-FOXW

  4. #4
    Senior Member Wheels's Avatar
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    Default Re: Electric trim fail

    Thanks for the reply. I'll order a switch from Spruce after I read the material you suggested. Thanks again. While the engine install has gone slowly considering it was supposed to be "like Item" replacement, I am overall happy with the progress. Here is a pic of the inspection happening.
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