AR XA Platter Thrust Plate

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pjcarroll
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AR XA Platter Thrust Plate

Post by pjcarroll » 14 Mar 2018 14:31

Hi. Anyone out there replace the platter bearing thrust disc? Hoping for suggestions on how to remove the old one. Thanks.

derspankster
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Re: AR XA Platter Thrust Plate

Post by derspankster » 14 Mar 2018 14:47

Blue tack on a pencil should do the trick. Or something similar. Might have to clean old lube out of the well first.

pjcarroll
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Re: AR XA Platter Thrust Plate

Post by pjcarroll » 14 Mar 2018 14:58

Thanks. Sounds easy.

derspankster
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Re: AR XA Platter Thrust Plate

Post by derspankster » 15 Mar 2018 13:52

pjcarroll wrote:Thanks. Sounds easy.
In many cases you can just turn the thrust plate over if it is indented and it will be fine for another few decades.

pjcarroll
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Re: AR XA Platter Thrust Plate

Post by pjcarroll » 15 Mar 2018 16:45

That's good to know. I did order one of Pat Leaver's delrin replacement plates, so I'll try that first. In the past I've cut thrust plates from a peek rod for my other turntable, but that required a good bit of polishing.

Calypte
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Re: AR XA Platter Thrust Plate

Post by Calypte » 12 Jan 2019 03:43

pjcarroll wrote:
14 Mar 2018 14:58
Thanks. Sounds easy.
Was it? (thrust plate removal)

cre009
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Re: AR XA Platter Thrust Plate

Post by cre009 » 13 Jan 2019 15:40

Calypte wrote:
12 Jan 2019 03:43
pjcarroll wrote:
14 Mar 2018 14:58
Thanks. Sounds easy.
Was it? (thrust plate removal)
The blu-tac removal method works well enough provided the bearing well is dry ie all oil is removed. There is a risk that the blu-tac will come off the pencil in the well while you are trying to remove the plate requiring a further go.

As mentioned by derspankster, over time the delrin becomes slightly pitted causing increased spindle drag. Flipping the plate over works well provided that side of the plate is not pitted.

A good test is to take the belt off and spin the outer platter fairly aggressively. Spin down time to stop should be 4 minutes or more. If less than 90 seconds then changing the plate will be beneficial.

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