noisy jacks

[Don Price]

Thanks for the suggestions from David A., David L., Dean M., and Tom D.  
And anyone else I may have missed.   I've been in contact with Y.C., and 
will be doing the warranty work in the near future.   I really 
appreciate the "how to" suggestions.

Don

TOM DRISCOLL wrote:

>
> ----- Original Message ----- From: "Don Price" <dcp3@twol.com>
> To: <pianotech@ptg.org>
> Sent: Wednesday, December 07, 2005 9:29 PM
> Subject: noisy jacks
>
>
>> List   -   I worked on a Young Chang grand today.  Purchased new 
>> about 6 years ago.   The jacks are making a fairly pronounced click 
>> upon release of the key.   A model G157.   Each jack seems to be 
>> making about the same amount of noise.   When releasing a 6 or 7 note 
>> chord, the combined sound of those 6 or 7 jacks is quite obvious.   I 
>> believe the problem is  the round hard felt on the jack.
>> Anyone run into this before?    How did you fix the problem?   Is 
>> this a warranty problem?   I called Young Chang, but have not 
>> received a return call.
>>
>> I happened to have another Young Chang at the end of the day which I 
>> was checking for a church.  A 6' 10" I believe.  No jack noise at all 
>> on the key release.
>>
>> Thanks.
>>
>> Don
>
>
>    Don,
>     This has  been a warranty covered item in the past.
>    You have diagnosed the problem correctly.
>    The jack regulating punching is too hard.
>
>    This job is quick and easy.
>
>    1. select the closest size jack regulating punching to the existing 
> punching.
>        I use supply house punchings--Hey Wurzen .Are you listening?
>
>    2. Remove the hammer rail---Carefully---with all the hammer 
> assemblies still mounted.
>        (first index the rail position on the brackets )
>
>    3. Lift each whippen to expose the regulating button-punching.
>        A quick slice with an exacto knife -Bada Bing they are all off
>
>    4. Glue on the new punchings-I use titebond--rough regulate the 
> jack position in the
>         rep. window.
>
>    5. Reinstall the hammer rail and regulate the jacks to knuckles 
> with your preferred
>         method  ---Bada Boom you're done !
>
>        Be sure to check the rest of this action .I.E. tight balance 
> holes and bushings. Hammer spacing,Squeeky knuckles, keyframe bedding 
> , tight hammer flange centers, tight damper guide rail 
> bushings.Regulation etc.
>    It's my guess that these punchings are not the only problem here.
>    Good luck,
>    Tom Driscoll RPT
>
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
>