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No. 6435
Deconstruction
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No. 6435 | Overview | Starting Line | Arrival | Deconstruction | Beneath Decks | First Night's Spin | Listening To Plinths | Motor | System : The Tonearm | Tweaks, Contact | Articles | Bookshelf | Links | More Links | Transit | Next
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COMPLETE DISASSEMBLY & stripdown of spindle bearing. Somewhat easier than it seems ……
From below, the whole grease jet and it’s cap must first be removed to allow clearance for the assembly to be
extracted through the top deck. This seems intimidating, at first, until you
remember that it is a grease bearing, and not filled with oil or anything that’s going to run all over uncontrollably. Even broken-down grease remains pretty manageable. Something I've gone all-out on is to mark or note the exact position / orientation
of parts that might have two or more ways to go back together. This is all under the hood, so my little directional triangles
and dots will never show on the finished deck. The rationale here is that things tend to wear in to a certain mode
of fitting, especially on a fifty-year old unit. I won't be disturbing their style at this point. THERE IS NO BEARING (ball) in
a grease bearing. ... I suspected that I'd have to soak the bearing
elements in some solvent ( I opted for plain Zippo lighter fluid (naptha) in this case. I've used it for years on everything
and I know from Lp-cover adhesive removal that it evaporates quickly and leaves no visable residue of it's own, even on a
white Lp cover.)---- but soon found that the old greases just slid off the HYPER-POLISHED MIRROR-FINISH hardened steel
spindle shaft. This particular part of the Garrard, along with the interior polished-brass sleeve, is one of the most highly-finished
/ precise parts I've ever seen in any field short of aerospace; certainly blows away any 'record player' elements I've ever
seen. A Zippo-soaked cloth finishes the cleanup of the bearing-shaft interior.
GREASE is the word. Garrard originally included a tube of their exact specification of bearing
grease, nozzle appropriately sized for injecting the bearing periodically. Lacking
either the appropriately-nozzled grease-gun or the long-gone accessory tube of Garrard Grease, the best way to cram this thing
full of grease was by a longish 'coffee stirrer' stick, the wooden one that's about one-eighth inch wide by five or so inches
long. With this implement it's pretty simple to "paint" a thick inner layer all the way through the inside length of the bearing
housing. Go over the top a little here, as the object is to eliminate all air once the spindle shaft is re-inserted. The reinsertion
is somewhat tantric and takes a few minutes for the shaft to penetrate. This
is fine because the side-loader jet and cap may be filled w/ the black stuff and coaxed onboard while the shaft is
still coming through. But first check the progress through the port, which actually allows a side-view of the progress as
it goes. Be prepared for the top-deck-side spindle to emerge super-well-gunked, and
have the materials on hand for tidying up. Again, simpler than it all sounds, since you can slow the progress of the spindle
shaft at any time by leaning more to the horizontal, which causes it to stop pretty quickly. Any apprehension about a grease-bearing
changeout is pretty soon dispelled.
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