Vacuum Actuators

Heating, Cooling & AC

  1. dspur

    dspur FBBO Gold Member FBBO Gold Member

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    Rebuilding the heater / ac box. (69 Dodge Super Bee). All was very rusty. The three actuators move (I can clean the rust) and seem to hold vacuum, but move very slowly. I can't find replacements so if you have a source please let me know. How could / should I go about making these work like they should.

    Thanks in advance.

    Photo Dec 18, 2 42 31 PM.jpg
     
  2. 1 Wild R/T

    1 Wild R/T FBBO Gold Member FBBO Gold Member

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    Put vacuum caps on the connections & throw them in Evaporust overnight...
     
  3. dspur

    dspur FBBO Gold Member FBBO Gold Member

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    Yeah I have soaked part of the shafts. I can try that too. Someone somewhere, may have been on social media, to soak in 1/3 pine sol and 1/2 water. Not sure what that does.
     
  4. JimKueneman

    JimKueneman FBBO Gold Member FBBO Gold Member

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    Tape the nipples and bead blast them. Will look and move like new.
     
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    • LowBikeMike

      LowBikeMike Well-Known Member

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      You need to he careful with the rubber shaft seal, once its compromised it wont hold vacuum on that side. I've got a like new AC actuator (long rod with the kinks) that I dont need if your interested.
       
    • dspur

      dspur FBBO Gold Member FBBO Gold Member

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      Thanks. What are you asking?
       
    • LowBikeMike

      LowBikeMike Well-Known Member

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      $150 plus shipping. There are two currently on Ebay in the same condition, one priced lower, the other higher.

      20220115_084727.jpg
       
    • JimKueneman

      JimKueneman FBBO Gold Member FBBO Gold Member

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      As long as the seal is not ripped there are ways to make them work again. If it leaks too much around the shaft simply take a strand of wire and wrap it around the rubber six or eight times then twist it off and lock it down with some weatherstrip adhesive. The pressure of the wire wrapped around adds a little more grab on the shaft. If it leaks because the rubber is hard and does not seal against the metal diaphragm anymore same thing with weather adhesive sealing around the rubber with the weatherstrip Adhesive will usually seal them up good.
       
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