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  1. #1
    Connecticut CrazyA's Avatar
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    Checking and/or packing a "sealed" bearing.

    I don't know how many people know this or not, but it's possible to check (and pack or repack) a sealed bearing. The pillowblock bearing in this example (just happened to have it laying around) happened to be packed pretty well, but many that I have checked have not been. (actually, some horribly so) The only thing needed is a really pointy tool of some sort to carefully remove the seal. I use a dental pick tool end sharpened to a point.

    Anyhow, you may never use this info, but I thought that I would share it.

















  2. #2
    big83bronco's Avatar
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    Pretty helpful!!

  3. #3
    MR. SCOVILLE UNIT SUCKMYWAKE's Avatar
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    I Just Did That The Other Day To An Axle Bearing On A Ford Focus. I Have Also Used Our Air Powered Grease Gub With The Needle Attachment On It To Peirce Things And Grease Them That Way

  4. #4
    GPR1200_syd's Avatar
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    just a suggestion though, different grease types, brands or any grease in fact should not be mixed.

    To do it properly you have to remove the existing grease, degrease it, clean and dry it and pack it with only one type of grease
    Last edited by K447; 09-11-2014 at 05:05 PM.

  5. #5

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    I agree with not mixing greases. Below is an excerpt from an aircraft company and service warning from the our Civil Aviation Authority. In fact some aircraft maintenance books now list the exact grease used when any grease is used on an aircraft or helo.

    I'd hate to see a pump bearing set seize at speed from imcompatable grease or trailer wheel bearing fail at 55mph on a single axle trailer.. Highly unlikely from the guys on this board. From what I've read they all clean, repack and replace ...

    Regards
    Anthony


    Today, new generation grease-to-grease
    incompatibility issues can be real showstoppers.
    Grease has become a very complex
    lubricant. An increasing number of
    bearing failures in helicopters and aeroplanes
    have been traced to the breakdown
    of the lubricating grease.
    Mixing incompatible greases has been
    identified as an emerging airworthiness
    issue.
    One aircraft manufacturer, Britten-
    Norman, warns in the introduction to
    service bulletin (SB) 309: “The intermixing
    of grease with a clay-based thickener
    and grease with a lithium soapbased
    thickener, produces a chemical
    reaction that solidifies the grease causing
    accelerated wear and possible seizure of
    components.”

  6. #6
    Connecticut CrazyA's Avatar
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    Quote Originally Posted by GPR1200_syd
    to do it properly you have to remove the existing grease, degrease it, clean and dry it and pack it with only 1 type of grease
    I agree and should have mentioned that everything I did above was for tutorial purposes only.

    Thanks for catching that guys!!!

  7. #7
    Moderator RX951's Avatar
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    Good post CRazyA

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