Mark Cramer wrote: > > I love the Kawai verticals, but servicing the sqeeeeeeky trapwork is a real > pain! This and other Japanese and Korean pianos ... agreed!! > The problem (for me) is the metal jungle around the pedals. Just how are we > supposed to service pedal pivot bushings? Or do they need it (nylon)? I find that, until they wear out, causing wobbliness and metal to metal contact, they don't seem to require any lubrication. > After the top end is treated, if I have squeeks from below, I've had success > with ... > > 2.) with the adjustment backed off (sustain pedal), I rotate the coil spring > in it's seat, a 1/2 turn or so. I feel the high-strength compression springs are the cause of elusive squeeks in these systems. As you note, simply rotating or realigning may remedy the squeek for a time, but they inevitably return. I have had some long-term success with removing the springs and bending the ends of the coils so that under compression they will not contact the next coil. Also, the nylon 'cups' that hold these springs in place tend to crack under the considerable compressive force of the spring. For added cushioning, I have placed leather disks between the nylon cup and the spring. Then load the d-mn things up with Protek grease! Stan Kroeker Registered Piano Technician Brandon University Part-time, long-distance, itinerant technician
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