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<DIV dir=ltr align=left><SPAN class=165050223-23112007><FONT face=Arial
color=#0000ff size=2>Uhm, treating with gasoline and a
match?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=165050223-23112007><FONT face=Arial
color=#0000ff size=2>les bartlett</FONT></SPAN></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> pianotech-bounces@ptg.org
[mailto:pianotech-bounces@ptg.org] <B>On Behalf Of </B>Gene
Nelson<BR><B>Sent:</B> Friday, November 23, 2007 4:52 PM<BR><B>To:</B>
pianotech@ptg.org<BR><B>Subject:</B> bushings damaged by wd
40<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>Hello list,</FONT></DIV>
<DIV><FONT face=Arial size=2>Here again with more bushing woes.</FONT></DIV>
<DIV><FONT face=Arial size=2>Have a client with a relatively new (8yrs) Nordiska
5'8" and all of the hammer flanges are tight. There is no friction problems
anywhere else in the action. I have reason to believe that these bushings were
treated with wd 40 or similar - they were discolored and appeared a dirty
burgundy color compared with the typical bright red on whip
flanges.</FONT></DIV>
<DIV><FONT face=Arial size=2>First visit I chose 7 of the worst offenders and
repinned. Friction was over 10g at the flange and was < 3g after repinning. I
used my straight broaches to fit the new pin to the bushing - did not rebush -
and the bushings were very difficult to size - had to shave off felt with the
cutting part of the broach and only went 1/2 size larger on the
pin.</FONT></DIV>
<DIV><FONT face=Arial size=2>Client calls today to say they are tightening up
again. Have not experienced this before. </FONT></DIV>
<DIV><FONT face=Arial size=2>Also, I treated all other flanges with
ProTek and they responded very well - dropped the touchweight at the key from 67
to 57g on average. These are also tightening up according to the client. Did
this work only 6 days ago. There are no excessive humidity issues in the
home.</FONT></DIV>
<DIV><FONT face=Arial size=2>Will return to experiment with alcohol water
and a zapper - electrically heat the pin to iron the bushing.</FONT></DIV>
<DIV><FONT face=Arial size=2>Anyone experienced with wd contaminated bushings I
would appreciate advice.</FONT></DIV>
<DIV><FONT face=Arial size=2>The client cannot afford to rebush or replace parts
- repinning appears to have some complication here for some reason.</FONT></DIV>
<DIV><FONT face=Arial size=2>Thanks.</FONT></DIV>
<DIV><FONT face=Arial size=2>Gene Nelson</FONT></DIV><BR>
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