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Thread: PA-18-90 Oil temp line missing.

  1. #1
    Ed Hazlett's Avatar
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    PA-18-90 Oil temp line missing.

    Hello, im looking for some information on my PA-18-90. The capillary line on the oil temp/pressure gauge is broken off the back (US Gauge 16264) and is missing, it has a blank in the oil screen housing. I am looking to get this repaired if possible otherwise would look at a new gauge. I'm also wondering if i am missing any sort of fitting adapter between the capillary bulb and oil screen housing?

    Any info would be great thanks.
    Ed

    PS the blank on the screen housing is lockwired, this photo was taken mid service.

    Click image for larger version. 

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  2. #2
    cubdriver2's Avatar
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    Keystone in Lock Haven or John Wolf in Ohio

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"
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  3. #3
    fancypants's Avatar
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    The oil temperature probe threads into an adapter that threads into the oil screen with a crush gasket.

    https://www.univair.com/piper/parts/...piper-adapter/

  4. #4
    Ed Hazlett's Avatar
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    Thankyou, is that adaptor universal between a 150 and a 90 cub? Meaning Lycoming and Continental ?


    Sent from my iPhone using SuperCub.Org

  5. #5

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    Must be because it is listed for Cubs n Tri-Pacers. You certainly need one for the Continental engines.
    It has a shoulder inside to stop the thermometer bulb just disappearing inside the oil filter.
    Likes hotrod180 liked this post

  6. #6
    Steve Pierce's Avatar
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    Send it to John Wolfe, they can fix it. You can buy the adapter.
    Steve Pierce

    Everybody is ignorant, only on different subjects.
    Will Rogers

  7. #7
    hotrod180's Avatar
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    This is most likely the adapter you need.

    OIL TEMPERATURE BULB ADAPTER | Aircraft Spruce

    This screws into the oil screen housing, instead of the plug that's shown in your photo, then the oil temp sensor bulbs screws into it.
    Cessna Skywagon-- accept no substitute!

  8. #8
    supercrow's Avatar
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    And when you have it all together correctly, make sure it doesn't leak. We lost a local aviator here 30 yrs. ago because he screwed it up and when it blew all over the windshield and the engine quit, he quit flying and corkscrewed a 90 hp champ into the ground killing himself and an 18 yr old passenger. Always keep flying the airplane.

  9. #9
    wireweinie's Avatar
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    If you don't have the parts manual yet, get one. If you can't download one from the internet, just ask for a copy. You are going to need it anytime you are pulling parts and even if certain part numbers are out of date, they still cross over to the current numbers.

    Look at items #57 and #58.

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    Life's tough . . . wear a cup.

  10. #10
    cubdriver2's Avatar
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    I thought the " nut " that comes on the capillary tube was hard to come by?
    As in you need to send one in with it

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

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