Hi Daniel
It is very important to use the correct grade of grease on these keys. It is readily available from Yamaha. Use of the wrong grease can have dire consequences.
Given that Yamaha is a Japanese company and that you are in Japan I would suggest you contact Yamaha direct.
There are a whole series of Clavinova\u2019 that are suffering from the wrong grease where after a time the back part of the key, the fulcrum, cracks and the key then tilts over and rubs on the key next to it. This was a manufacturing fault, caused by the grease used attacking the plastic, resulting in Yamaha replacing key frame assemblies FOC.
As far as I\u2019m aware your P55 is not one of them.
Regards
Brian G3OYU
From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Daniel Forró
Sent: 31 December 2011 9:13
To: vintagesynthrepair@yahoogroups.com
Subject: [vintagesynthrepair] Re: lubrication grease in Yamaha keyboard
I just started cleaning of my Yamaha Clavinova P500 after 18 years.
It needs complete disassembling of weighted keys. I just have
mentioned white creamy lubrication grease used on some friction spots
and joints. Because I want to clean the keys well, this has to go
away and I have to put there something similar.
I wanted to ask here if by chance somebody knows what is it, or which
substitution would be good and work without problems. I use the
instrument only in my studio, and here in middle Japan we have hot
(up to 42 C) and humid summers. So i suppose grease should work well
under such conditions and not flow away.
Thanks for advice in advance, and Happy New Year to all here!
Daniel Forro