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Thread: Oleo strut serviicing

  1. #21
    Administrator Steve Pierce's Avatar
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    Default Re: Oleo strut serviicing

    Quote Originally Posted by Old3pacer View Post
    LOVE the cigarette pack as a measuring tool!!! I still have 2 ash trays in the cabin -- 1 up front on the glareshield, 1 by the right rear window. Going out today to check my nose strut which appears to have let down. We have had pretty wide outside temp swings. There is no puddle of fluid. Would you just add air or nitrogen and assume fluid is there inside?
    Thanks for the advice!
    If it is not wet I would just service with nitrogen.

  2. #22
    Old3pacer's Avatar
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    Default Re: Oleo strut serviicing

    Thanks Steve!

  3. #23
    Glen Geller's Avatar
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    Default Re: Oleo strut serviicing

    Quote Originally Posted by pmanton View Post
    Has anyone confirmed what the actual pressure is when the struts at 3-1/2?
    Paul
    Salome, AZ
    I believe if you try to measure the pressure with the load of the airframe/engine resting on the strut, you will lose a lot of air and be sad.
    As I mentioned above, after pulling the lower cowl, it's easy to pull the tail down either with weight on the tail hook (or a couple friends on the inboard-most part of the stab) to fully extend the strut, then pump it to 130~135 psi. While you have it extended you can wipe some hydraulic juice on the exposed chrome to remove any dirt - I just squirt it up into the seal/wiper to flush out the crud, and wipe up with paper towel.
    After a couple tries you will get the feel for it. I usually adjust it during annual when I have everything apart and the nose wheel off for bearing service.

    Cheers,
    GG
    Glen Geller
    1955 PA22-150 "One For Papa!"

  4. #24

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    Default Re: Oleo strut serviicing

    Does anyone have a complete written procedure for replacing the seals in the front strut? Thanks.

  5. #25
    Glen Geller's Avatar
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    Default Re: Oleo strut serviicing

    Quote Originally Posted by Subsonic View Post
    Does anyone have a complete written procedure for replacing the seals in the front strut? Thanks.
    I looked by keyword and did not find a complete "procedure" here.
    There are a lot of helpful tips, search "nose strut", "strut wiper" etc.
    I think an enterprising fellow could cut & paste the various suggestions into a cogent procedure from start (Remove engine cowling) to finish (Reinstall engine cowling).
    Glen Geller
    1955 PA22-150 "One For Papa!"

  6. #26
    Gilbert Pierce's Avatar
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    Default Re: Oleo strut serviicing

    Quote Originally Posted by Subsonic View Post
    Does anyone have a complete written procedure for replacing the seals in the front strut? Thanks.
    It looks like the answer to your question is “NO”.

  7. #27

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    Default Re: Oleo strut serviicing

    Quote Originally Posted by Gilbert Pierce View Post
    It looks like the answer to your question is “NO”.
    Gilbert, I should have read all the posts more carefully. Steve is a man of few words, but they can be important. See his post #9 - "The Owners Handbook shows 3.5 inches of chrome should be showing. It also has a section on both servicing and rebuilding the nose gear oleo." So I pulled out my POH and there it is, beginning on page 38 section V. Landing Gear Service - on page 40 there is an itemized procedure for how to service/replace the O-rings with the nose strut on the plane. I'm not going to reiterate it here, but thought others might want to know. See page 40. Taking a clue from Glen Geller's posts I also just bought a good high pressure bike tire pump - mine is rated to 220 psi, so pumping up to 130 or 135 psi should be relatively easy. I did a little research on bike pumps and there is a nice balance point between a pump that requires 10,000 strokes, and the high volume ones that only require a few strokes, but people less than 200 pounds have trouble pushing them down. I weigh 148 pounds so that mattered.

  8. #28
    Administrator Steve Pierce's Avatar
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    Default Re: Oleo strut serviicing

    I searched and searched and found nothing but I knew I had read it somewhere. I guess it was a case of I missed the forest for the trees. I maintain a couple of Carbon Cubs with these fancy Acme Aero shock struts and use a bicycle pump. Luckily the reservoir is very small because it does make my elbow hurt pumping them up to 250 psi.

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