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Cleaning NMO mount

Discussion in 'General CB Services Discussion' started by Red012, Apr 3, 2020.

  1. Red012

    Red012 New Member

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    My 96 bronco has a nmo mount and coax ran but its been exposed for a few years and has some gummy rust im going to get the multimeter out and check it but ive been thinking about vinegar in a little cup sealed to it ive heard that makes stuff fall off if anyone has anything better to use im open to suggestions


     

  2. Redbeard U812

    Redbeard U812 WDX-1030 / U812 South Texas

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    Take it apart, wire brush, wire wheel, hit it with ospro- phosphoric acid, kills rust. Wire wheel. Should turn rust black to carbon. Between parts apply silicone lube, re-install.
     
  3. Red012

    Red012 New Member

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    Its got some build up on it so i will probably have to get it off before I can remove it
     
  4. Red012

    Red012 New Member

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    I put a hole in a coke cap and screwed it on the nmo soaked it in pb blaster and used a wire brush on it now it test good on the multi meter
     
    Redbeard U812 and Slowmover like this.
  5. M0GVZ

    M0GVZ Sr. Member

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    Rust acts like a diode for RF which is not a good thing so you want that gone. I'd be inclined to assume water has got in the coax and I think I'd just bin the lot and install new mount and cable.
     
  6. Red012

    Red012 New Member

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    The cable is good i believe. I know it hasn’t leaked just external surface rust i cleaned the threads and the center nub they are clean now
     
  7. Red012

    Red012 New Member

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    Thats the one place in the headliner that stays dry all the time and it is dusty
     
  8. Red012

    Red012 New Member

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    image.jpg image.jpg So its no longer cleaning an nmo mount its now replacing it
     
    Slowmover likes this.
  9. Red012

    Red012 New Member

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    Thats all thats left of it the tabs snapped off and my antenna fell over wasn’t getting any signal now i know why
     
  10. sunbulls

    sunbulls Sr. Member

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    I'd look into getting a brass NMO mount as your replacement. Motorola and PCTEL makes some quality ones.
     
  11. Red012

    Red012 New Member

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    The one I ordered to replace it is brass im also thinking about panel bonding a peice of sheet metal on the inside to brace the mount
     
    Slowmover likes this.

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