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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/X7V4QAQ64X5GECCQZMKW47UOXMPQ4BWF/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "X7V4QAQ64X5GECCQZMKW47UOXMPQ4BWF",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/VIDNKSHVYSN2Y72DIHJVFWB6O2FKU6PQ/",
    "sender": {
        "address": "stanw1le (a) verizon.net",
        "mailman_id": "cde59a7de6874af3b354fb231df89b4c",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/cde59a7de6874af3b354fb231df89b4c/emails/"
    },
    "sender_name": "Stan, W1LE",
    "subject": "[amsat-bb] Re: Thrust bearing maintenance",
    "date": "2011-06-01T13:01:17Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VIDNKSHVYSN2Y72DIHJVFWB6O2FKU6PQ/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hello Steve,\n\n15 years outside in the weather is a long time. Options:\n\n1. replace in kind with a new unit. Probably the most time effective and \ncost effective approach.\nThe new one should last another 15+ years.\n\n2. Soak the old unit in a solvent to loosen up all of the old grease and \nflush dirt out.\nDisassemble and inspect the bearings and bearing surfaces.\n  This unit is foreign made so all hardware is probably metric, as are \nthe ball bearings.\nClean each ball bearing and inspect for out of roundness and \npitting/corrosion.\nHow does each bearing roll on a hard surface ?  Replace all pitted \nbearings and all out of round.\nGood luck finding metric bearings, Yes, they are out there. Maybe Yaesu \nhas a rebuild kit.\nInspect the bearing surfaces for gouging and other wear. Assemble with \nall new parts.\nBe sure to grease all of the hardware threads.\nDo not expect the rebuilt old unit to be as mechanically tight as a new \nunit.\nProbably lots more sloppiness in the fit.\nAfter rebuild, is there is any binding no matter how light, condemn the \nunit.\n\nAs you can see, buying a new unit is the most cost effective and time \neffective alternative.\nI just replaced a ROHN TB3 thrust bearing on my main tower, with a new unit.\n\nGood Luck with the project.\n\nStan, W1LE      Cape Cod    FN41sr\n\n\n\nOn 6/1/2011 8:19 AM, Stephen E. Belter wrote:\n> I have an Yaesu GS-050 thrust bearing that has been installed for about 15 years.  The thrust bearing turns, but requires a lot of force.\n>\n> I disassembled the thrust bearing to find that the grease is very sticky (think candy apple sticky), and not lubricative (if that is a word).\n>\n> Should I take it to an auto repair shop and ask them to degrease and then lubricate similar to repacking a wheel bearing?\n>\n> What kind of grease should be used?\n>\n> Thanks and 73, Steve N9IP\n> --\n> Steve Belter\n> \t\n>\n>\n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n\n",
    "attachments": []
}